[INFO] fetching crate rust-quiz 0.0.2+crater...
[INFO] extracting crate rust-quiz 0.0.2+crater into work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/rust-quiz/0.0.2+crater
[INFO] extracting crate rust-quiz 0.0.2+crater into work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/reg/rust-quiz/0.0.2+crater
[INFO] validating manifest of rust-quiz-0.0.2+crater on toolchain master#5f9c0448dde167128d668da4555879f64e56af1d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rust-quiz-0.0.2+crater on toolchain try#8ec8125bea94852768b56958f05da47666c21ab0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rust-quiz-0.0.2+crater
[INFO] finished frobbing rust-quiz-0.0.2+crater
[INFO] frobbed toml for rust-quiz-0.0.2+crater written to work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/rust-quiz/0.0.2+crater/Cargo.toml
[INFO] started frobbing rust-quiz-0.0.2+crater
[INFO] finished frobbing rust-quiz-0.0.2+crater
[INFO] frobbed toml for rust-quiz-0.0.2+crater written to work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/reg/rust-quiz/0.0.2+crater/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded oqueue v0.1.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking rust-quiz-0.0.2+crater against master#5f9c0448dde167128d668da4555879f64e56af1d for pr-62133
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62133/worker-5/master#5f9c0448dde167128d668da4555879f64e56af1d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/reg/rust-quiz/0.0.2+crater:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d015f2c29c915e37391f51216ef431a343fa570ee9c76d9349981308adc7a62b
[INFO] running `"docker" "start" "-a" "d015f2c29c915e37391f51216ef431a343fa570ee9c76d9349981308adc7a62b"`
[INFO] [stderr]    Compiling syn v0.15.39
[INFO] [stderr]    Compiling pulldown-cmark v0.5.2
[INFO] [stderr]     Checking hyper-staticfile v0.3.1
[INFO] [stderr]    Compiling serde_derive v1.0.94
[INFO] [stderr]    Compiling readonly v0.1.4
[INFO] [stderr]    Compiling remain v0.1.3
[INFO] [stderr]     Checking oqueue v0.1.0
[INFO] [stderr]     Checking serde v1.0.94
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking rust-quiz v0.0.2+crater (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 44.42s
[INFO] running `"docker" "inspect" "d015f2c29c915e37391f51216ef431a343fa570ee9c76d9349981308adc7a62b"`
[INFO] running `"docker" "rm" "-f" "d015f2c29c915e37391f51216ef431a343fa570ee9c76d9349981308adc7a62b"`
[INFO] [stdout] d015f2c29c915e37391f51216ef431a343fa570ee9c76d9349981308adc7a62b