Dec 13 15:41:35.079 INFO testing jeremyBanks/tprime against try#aa49d8ef14939ddec0e34b346b60174a5673d48f for pr-56550
Dec 13 15:41:35.079 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-7/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/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 +aa49d8ef14939ddec0e34b346b60174a5673d48f-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 15:41:35.571 INFO [stdout] 587dfd3de46b19e1aeba6816cf44f59ec61064b8a9a6ee67e3976c0e6f347cec
Dec 13 15:41:35.573 INFO running `"docker" "start" "-a" "587dfd3de46b19e1aeba6816cf44f59ec61064b8a9a6ee67e3976c0e6f347cec"`
Dec 13 15:41:37.184 INFO [stderr] usermod: no changes
Dec 13 15:41:37.235 INFO [stderr] warning: the cargo feature `edition` is now stable and is no longer necessary to be listed in the manifest
Dec 13 15:41:37.363 INFO [stderr]    Compiling wasm-bindgen-shared v0.2.15
Dec 13 15:41:37.373 INFO [stderr]    Compiling rand_core v0.2.1
Dec 13 15:41:37.377 INFO [stderr]    Compiling web-sys v0.0.1
Dec 13 15:41:37.377 INFO [stderr]    Compiling proc-macro2 v0.4.9
Dec 13 15:41:37.411 INFO [stderr]    Compiling serdebug v1.0.5
Dec 13 15:41:40.134 INFO [stderr] error[E0658]: use of unstable library feature 'proc_macro_def_site' (see issue #54724)
Dec 13 15:41:40.134 INFO [stderr]    --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/proc-macro2-0.4.9/src/unstable.rs:347:27
Dec 13 15:41:40.134 INFO [stderr]     |
Dec 13 15:41:40.134 INFO [stderr] 347 |             Span::Nightly(proc_macro::Span::def_site())
Dec 13 15:41:40.134 INFO [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 13 15:41:40.134 INFO [stderr]     |
Dec 13 15:41:40.134 INFO [stderr]     = help: add #![feature(proc_macro_def_site)] to the crate attributes to enable
Dec 13 15:41:40.134 INFO [stderr] 
Dec 13 15:41:40.171 INFO [stderr] error: aborting due to previous error
Dec 13 15:41:40.171 INFO [stderr] 
Dec 13 15:41:40.171 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Dec 13 15:41:40.181 INFO [stderr] error: Could not compile `proc-macro2`.
Dec 13 15:41:40.181 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 13 15:41:40.520 INFO [stderr] error: build failed
Dec 13 15:41:40.527 INFO [stderr] su: No module specific data is present
Dec 13 15:41:41.395 INFO running `"docker" "inspect" "587dfd3de46b19e1aeba6816cf44f59ec61064b8a9a6ee67e3976c0e6f347cec"`
Dec 13 15:41:41.707 INFO running `"docker" "rm" "-f" "587dfd3de46b19e1aeba6816cf44f59ec61064b8a9a6ee67e3976c0e6f347cec"`
Dec 13 15:41:41.955 INFO [stdout] 587dfd3de46b19e1aeba6816cf44f59ec61064b8a9a6ee67e3976c0e6f347cec