Dec 05 14:48:04.091 INFO testing media-io/timed-text-wasm against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 05 14:48:04.091 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-6/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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 05 14:48:04.602 INFO [stdout] bc0930ca0eca1db465c51ebe37ad0b1a2937a4452ae905260be7e2bac5cb1a7c
Dec 05 14:48:04.608 INFO running `"docker" "start" "-a" "bc0930ca0eca1db465c51ebe37ad0b1a2937a4452ae905260be7e2bac5cb1a7c"`
Dec 05 14:48:05.815 INFO [stderr] usermod: no changes
Dec 05 14:48:05.943 INFO [stderr]    Compiling proc-macro2 v0.4.12
Dec 05 14:48:05.943 INFO [stderr]    Compiling wasm-bindgen-shared v0.2.16
Dec 05 14:48:07.724 INFO [stderr] error[E0658]: use of unstable library feature 'proc_macro_def_site' (see issue #54724)
Dec 05 14:48:07.724 INFO [stderr]    --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.12/src/unstable.rs:346:27
Dec 05 14:48:07.724 INFO [stderr]     |
Dec 05 14:48:07.724 INFO [stderr] 346 |             Span::Nightly(proc_macro::Span::def_site())
Dec 05 14:48:07.724 INFO [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 14:48:07.724 INFO [stderr]     |
Dec 05 14:48:07.724 INFO [stderr]     = help: add #![feature(proc_macro_def_site)] to the crate attributes to enable
Dec 05 14:48:07.724 INFO [stderr] 
Dec 05 14:48:07.744 INFO [stderr] error: aborting due to previous error
Dec 05 14:48:07.744 INFO [stderr] 
Dec 05 14:48:07.744 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Dec 05 14:48:07.752 INFO [stderr] error: Could not compile `proc-macro2`.
Dec 05 14:48:07.752 INFO [stderr] 
Dec 05 14:48:07.752 INFO [stderr] To learn more, run the command again with --verbose.
Dec 05 14:48:07.760 INFO [stderr] su: No module specific data is present
Dec 05 14:48:08.493 INFO running `"docker" "inspect" "bc0930ca0eca1db465c51ebe37ad0b1a2937a4452ae905260be7e2bac5cb1a7c"`
Dec 05 14:48:08.761 INFO running `"docker" "rm" "-f" "bc0930ca0eca1db465c51ebe37ad0b1a2937a4452ae905260be7e2bac5cb1a7c"`
Dec 05 14:48:09.080 INFO [stdout] bc0930ca0eca1db465c51ebe37ad0b1a2937a4452ae905260be7e2bac5cb1a7c