Dec 13 11:00:28.500 INFO testing media-io/timed-text-wasm against master#bd47d6825bf4090517549d33cfef10d3300b4a75 for pr-56550
Dec 13 11:00:28.500 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-7/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56550/master#bd47d6825bf4090517549d33cfef10d3300b4a75:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +bd47d6825bf4090517549d33cfef10d3300b4a75-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 13 11:00:28.748 INFO [stdout] 11f9251ba130727c5e844414af088bcabe1eeb2fead3bf5b8a84f6b8895e19eb
Dec 13 11:00:28.753 INFO running `"docker" "start" "-a" "11f9251ba130727c5e844414af088bcabe1eeb2fead3bf5b8a84f6b8895e19eb"`
Dec 13 11:00:29.422 INFO [stderr] usermod: no changes
Dec 13 11:00:29.455 INFO [stderr] warning: `default-features = [".."]` was found in [features]. Did you mean to use `default = [".."]`?
Dec 13 11:00:29.555 INFO [stderr]    Compiling proc-macro2 v0.4.12
Dec 13 11:00:29.556 INFO [stderr]    Compiling wasm-bindgen-shared v0.2.16
Dec 13 11:00:29.557 INFO [stderr]    Compiling log v0.4.3
Dec 13 11:00:32.263 INFO [stderr] error[E0658]: use of unstable library feature 'proc_macro_def_site' (see issue #54724)
Dec 13 11:00:32.263 INFO [stderr]    --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.12/src/unstable.rs:346:27
Dec 13 11:00:32.263 INFO [stderr]     |
Dec 13 11:00:32.263 INFO [stderr] 346 |             Span::Nightly(proc_macro::Span::def_site())
Dec 13 11:00:32.263 INFO [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 11:00:32.263 INFO [stderr]     |
Dec 13 11:00:32.263 INFO [stderr]     = help: add #![feature(proc_macro_def_site)] to the crate attributes to enable
Dec 13 11:00:32.263 INFO [stderr] 
Dec 13 11:00:32.288 INFO [stderr] error: aborting due to previous error
Dec 13 11:00:32.288 INFO [stderr] 
Dec 13 11:00:32.288 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Dec 13 11:00:32.296 INFO [stderr] error: Could not compile `proc-macro2`.
Dec 13 11:00:32.296 INFO [stderr] 
Dec 13 11:00:32.296 INFO [stderr] To learn more, run the command again with --verbose.
Dec 13 11:00:32.308 INFO [stderr] su: No module specific data is present
Dec 13 11:00:33.353 INFO running `"docker" "inspect" "11f9251ba130727c5e844414af088bcabe1eeb2fead3bf5b8a84f6b8895e19eb"`
Dec 13 11:00:33.627 INFO running `"docker" "rm" "-f" "11f9251ba130727c5e844414af088bcabe1eeb2fead3bf5b8a84f6b8895e19eb"`
Dec 13 11:00:33.947 INFO [stdout] 11f9251ba130727c5e844414af088bcabe1eeb2fead3bf5b8a84f6b8895e19eb