Nov 04 00:52:28.601 INFO checking qingxiang-jia/learn-rust against master#2ad8c7b3502616aff142a4640cce911c6c2c5463 for pr-55655
Nov 04 00:52:28.602 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55655/worker-2/master#2ad8c7b3502616aff142a4640cce911c6c2c5463:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-55655/master#2ad8c7b3502616aff142a4640cce911c6c2c5463:/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 +2ad8c7b3502616aff142a4640cce911c6c2c5463-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"`
Nov 04 00:52:29.107 INFO blam! 31f561fcab907fba2338041b1f976c7868efb86127440f88564cb94a4c5c25f7
Nov 04 00:52:29.110 INFO running `"docker" "start" "-a" "31f561fcab907fba2338041b1f976c7868efb86127440f88564cb94a4c5c25f7"`
Nov 04 00:52:29.977 INFO kablam! usermod: no changes
Nov 04 00:52:30.051 INFO kablam!    Compiling proc-macro2 v0.3.3
Nov 04 00:52:30.057 INFO kablam!     Checking serde_json v1.0.13
Nov 04 00:52:34.299 INFO kablam!    Compiling quote v0.5.1
Nov 04 00:52:35.598 INFO kablam!    Compiling syn v0.13.1
Nov 04 00:52:41.967 INFO kablam!    Compiling serde_derive_internals v0.23.0
Nov 04 00:52:46.139 INFO kablam!    Compiling serde_derive v1.0.37
Nov 04 00:52:57.031 INFO kablam!     Checking learn_rust v0.1.0 (/source)
Nov 04 00:52:57.979 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 27.97s
Nov 04 00:52:57.999 INFO kablam! su: No module specific data is present
Nov 04 00:52:58.905 INFO running `"docker" "rm" "-f" "31f561fcab907fba2338041b1f976c7868efb86127440f88564cb94a4c5c25f7"`
Nov 04 00:52:59.311 INFO blam! 31f561fcab907fba2338041b1f976c7868efb86127440f88564cb94a4c5c25f7