Dec 11 13:48:03.355 INFO checking media-io/timed-text-wasm against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 13:48:03.356 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-4/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-alt check --frozen --all --all-targets" "-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 11 13:48:03.789 INFO [stdout] ad684e66078266eca942251bb42939bf2577e3ba7265ae4c57cc365d5ea6970d
Dec 11 13:48:03.792 INFO running `"docker" "start" "-a" "ad684e66078266eca942251bb42939bf2577e3ba7265ae4c57cc365d5ea6970d"`
Dec 11 13:48:05.166 INFO [stderr] usermod: no changes
Dec 11 13:48:05.319 INFO [stderr]    Compiling proc-macro2 v0.4.12
Dec 11 13:48:05.319 INFO [stderr]    Compiling ryu v0.2.3
Dec 11 13:48:05.319 INFO [stderr]    Compiling wasm-bindgen-shared v0.2.16
Dec 11 13:48:05.319 INFO [stderr]    Compiling itoa v0.4.2
Dec 11 13:48:05.319 INFO [stderr]    Compiling log v0.4.3
Dec 11 13:48:05.319 INFO [stderr]    Compiling serde v1.0.71
Dec 11 13:48:09.086 INFO [stderr] error[E0658]: use of unstable library feature 'proc_macro_def_site' (see issue #54724)
Dec 11 13:48:09.086 INFO [stderr]    --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.12/src/unstable.rs:346:27
Dec 11 13:48:09.086 INFO [stderr]     |
Dec 11 13:48:09.086 INFO [stderr] 346 |             Span::Nightly(proc_macro::Span::def_site())
Dec 11 13:48:09.086 INFO [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 13:48:09.086 INFO [stderr]     |
Dec 11 13:48:09.086 INFO [stderr]     = help: add #![feature(proc_macro_def_site)] to the crate attributes to enable
Dec 11 13:48:09.086 INFO [stderr] 
Dec 11 13:48:09.112 INFO [stderr] error: aborting due to previous error
Dec 11 13:48:09.112 INFO [stderr] 
Dec 11 13:48:09.112 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Dec 11 13:48:09.114 INFO [stderr] error: Could not compile `proc-macro2`.
Dec 11 13:48:09.114 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 11 13:48:17.587 INFO [stderr] error: build failed
Dec 11 13:48:17.588 INFO [stderr] su: No module specific data is present
Dec 11 13:48:17.951 INFO running `"docker" "inspect" "ad684e66078266eca942251bb42939bf2577e3ba7265ae4c57cc365d5ea6970d"`
Dec 11 13:48:18.018 INFO running `"docker" "rm" "-f" "ad684e66078266eca942251bb42939bf2577e3ba7265ae4c57cc365d5ea6970d"`
Dec 11 13:48:18.094 INFO [stdout] ad684e66078266eca942251bb42939bf2577e3ba7265ae4c57cc365d5ea6970d