Build tlibc fail: no method named `lock` found for struct `Arc<dyn ImmutableWrite>`

[Marsman1996]

I'm trying to build tlibc in the docker container, but fail with the error message:

   ...
   Compiling panic_entry v0.1.0 (/Theseus/kernel/panic_entry)
warning: the feature `const_btree_new` has been partially stabilized since 1.66.0 and is succeeded by the feature `const_btree_len`
 --> src/lib.rs:9:12
  |
9 | #![feature(const_btree_new)]
  |            ^^^^^^^^^^^^^^^
  |
  = note: `#[warn(stable_features)]` on by default
help: if you are using features which are still unstable, change to using `const_btree_len`
  |
9 | #![feature(const_btree_len)]
  |            ~~~~~~~~~~~~~~~
help: if you are using features which are now stable, remove this line
  |
9 - #![feature(const_btree_new)]
  |

error[E0599]: no method named `lock` found for struct `Arc<dyn ImmutableWrite>` in the current scope
  --> src/stdio/mod.rs:24:29
   |
24 |     let mut writer = stdout.lock();
   |                             ^^^^ method not found in `Arc<dyn ImmutableWrite>`

For more information about this error, try `rustc --explain E0599`.
warning: `tlibc` (lib) generated 1 warning
error: could not compile `tlibc` (lib) due to previous error; 1 warning emitted

Caused by:
  process didn't exit successfully: `CARGO=/root/.rustup/toolchains/nightly-2023-10-27-x86_64-unknown-linux-gnu/bin/cargo CARGO_CRATE_NAME=tlibc CARGO_MANIFEST_DIR=/Theseus/tlibc CARGO_PKG_AUTHORS='Kevin Boos <kevinaboos@gmail.com>' CARGO_PKG_DESCRIPTION='A libc implementation for Theseus.' CARGO_PKG_HOMEPAGE='' CARGO_PKG_LICENSE='' CARGO_PKG_LICENSE_FILE='' CARGO_PKG_NAME=tlibc CARGO_PKG_README=README.md CARGO_PKG_REPOSITORY='' CARGO_PKG_RUST_VERSION='' CARGO_PKG_VERSION=0.1.0 CARGO_PKG_VERSION_MAJOR=0 CARGO_PKG_VERSION_MINOR=1 CARGO_PKG_VERSION_PATCH=0 CARGO_PKG_VERSION_PRE='' CARGO_PRIMARY_PACKAGE=1 LD_LIBRARY_PATH='/Theseus/tlibc/target/release/deps:/root/.rustup/toolchains/nightly-2023-10-27-x86_64-unknown-linux-gnu/lib:/root/.rustup/toolchains/nightly-2023-10-27-x86_64-unknown-linux-gnu/lib' OUT_DIR=/Theseus/tlibc/target/x86_64-unknown-theseus/release/build/tlibc-7781c1df6a61d268/out /root/.rustup/toolchains/nightly-2023-10-27-x86_64-unknown-linux-gnu/bin/rustc --crate-name tlibc src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --crate-type staticlib --emit=dep-info,link -C opt-level=3 -C embed-bitcode=no -C codegen-units=1 -C metadata=81224d42c72fc3ad -C extra-filename=-81224d42c72fc3ad --out-dir /Theseus/tlibc/target/x86_64-unknown-theseus/release/deps --target x86_64-unknown-theseus -L dependency=/Theseus/tlibc/target/x86_64-unknown-theseus/release/deps -L dependency=/Theseus/tlibc/target/release/deps --extern app_io=/Theseus/tlibc/target/x86_64-unknown-theseus/release/deps/libapp_io-535cd853a76f43e2.rlib --extern cbitset=/Theseus/tlibc/target/x86_64-unknown-theseus/release/deps/libcbitset-835faa47675d22f4.rlib --extern core2=/Theseus/tlibc/target/x86_64-unknown-theseus/release/deps/libcore2-46a0a021bb1f6033.rlib --extern cstr_core=/Theseus/tlibc/target/x86_64-unknown-theseus/release/deps/libcstr_core-f4fb5ef0ee9d711d.rlib --extern heap=/Theseus/tlibc/target/x86_64-unknown-theseus/release/deps/libheap-2ea8510313720bb0.rlib --extern libc=/Theseus/tlibc/target/x86_64-unknown-theseus/release/deps/liblibc-944ef7838a8c7c5c.rlib --extern log=/Theseus/tlibc/target/x86_64-unknown-theseus/release/deps/liblog-65849152392b179b.rlib --extern memchr=/Theseus/tlibc/target/x86_64-unknown-theseus/release/deps/libmemchr-ae681e15c1d4a64c.rlib --extern memory=/Theseus/tlibc/target/x86_64-unknown-theseus/release/deps/libmemory-bc200bb86b079cce.rlib --extern panic_entry=/Theseus/tlibc/target/x86_64-unknown-theseus/release/deps/libpanic_entry-db478ca71537c3f3.rlib --extern spin=/Theseus/tlibc/target/x86_64-unknown-theseus/release/deps/libspin-944b4652e1e7a3e7.rlib --extern task=/Theseus/tlibc/target/x86_64-unknown-theseus/release/deps/libtask-93c48946a80196bf.rlib --emit=obj -C debuginfo=2 -D unused-must-use -Z share-generics=no --sysroot /Theseus/build/deps/./sysroot -L native=/Theseus/tlibc/target/x86_64-unknown-theseus/release/build/tlibc-7781c1df6a61d268/out -l static=tlibc_c` (exit status: 1)
Error: "cargo command completed with failed exit code 101"
make: *** [Makefile:445: tlibc] Error 1