Oct 12 15:25:53.625 INFO checking qingxiang-jia/learn-rust against master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f for pr-54977
Oct 12 15:25:53.625 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-6/master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-6/pr-54977/master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f:/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 +5af0bb83044c3fb43d59ad5f49ee5ae1a293901f-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"`
Oct 12 15:25:54.064 INFO blam! 677ad7554db656e24a2a98a46c08507f6613e5eecf109578327462072d89ad0a
Oct 12 15:25:54.072 INFO running `"docker" "start" "-a" "677ad7554db656e24a2a98a46c08507f6613e5eecf109578327462072d89ad0a"`
Oct 12 15:25:55.267 INFO kablam! usermod: no changes
Oct 12 15:25:55.344 INFO kablam!    Compiling proc-macro2 v0.3.3
Oct 12 15:25:55.344 INFO kablam!     Checking serde_json v1.0.13
Oct 12 15:25:59.653 INFO kablam!    Compiling quote v0.5.1
Oct 12 15:26:00.945 INFO kablam!    Compiling syn v0.13.1
Oct 12 15:26:10.692 INFO kablam!    Compiling serde_derive_internals v0.23.0
Oct 12 15:26:15.352 INFO kablam!    Compiling serde_derive v1.0.37
Oct 12 15:26:25.820 INFO kablam!     Checking learn_rust v0.1.0 (/source)
Oct 12 15:26:27.020 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 31.71s
Oct 12 15:26:27.024 INFO kablam! su: No module specific data is present
Oct 12 15:26:28.020 INFO running `"docker" "rm" "-f" "677ad7554db656e24a2a98a46c08507f6613e5eecf109578327462072d89ad0a"`
Oct 12 15:26:28.336 INFO blam! 677ad7554db656e24a2a98a46c08507f6613e5eecf109578327462072d89ad0a