[INFO] updating cached repository Kurt-Yu/Rust-Crash-Course
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Kurt-Yu/Rust-Crash-Course
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Kurt-Yu/Rust-Crash-Course" "work/ex/beta-1.38-1/sources/1.37.0/gh/Kurt-Yu/Rust-Crash-Course"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Kurt-Yu/Rust-Crash-Course'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Kurt-Yu/Rust-Crash-Course" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Kurt-Yu/Rust-Crash-Course"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Kurt-Yu/Rust-Crash-Course'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cf6831d7235b9ddc02008f76d1b7989996abdb76
[INFO] sha for GitHub repo Kurt-Yu/Rust-Crash-Course: cf6831d7235b9ddc02008f76d1b7989996abdb76
[INFO] validating manifest of Kurt-Yu/Rust-Crash-Course on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Kurt-Yu/Rust-Crash-Course on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Kurt-Yu/Rust-Crash-Course
[INFO] finished frobbing Kurt-Yu/Rust-Crash-Course
[INFO] frobbed toml for Kurt-Yu/Rust-Crash-Course written to work/ex/beta-1.38-1/sources/1.37.0/gh/Kurt-Yu/Rust-Crash-Course/Cargo.toml
[INFO] started frobbing Kurt-Yu/Rust-Crash-Course
[INFO] finished frobbing Kurt-Yu/Rust-Crash-Course
[INFO] frobbed toml for Kurt-Yu/Rust-Crash-Course written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Kurt-Yu/Rust-Crash-Course/Cargo.toml
[INFO] crate Kurt-Yu/Rust-Crash-Course already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Kurt-Yu/Rust-Crash-Course against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Kurt-Yu/Rust-Crash-Course:/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=warn" "-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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] dd38d3bae3809f01613e0560f38ca3ce5eb59913c4baff24063d8c1a3e326925
[INFO] running `"docker" "start" "-a" "dd38d3bae3809f01613e0560f38ca3ce5eb59913c4baff24063d8c1a3e326925"`
[INFO] [stderr]    Compiling rustlang v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `"docker" "inspect" "dd38d3bae3809f01613e0560f38ca3ce5eb59913c4baff24063d8c1a3e326925"`
[INFO] running `"docker" "rm" "-f" "dd38d3bae3809f01613e0560f38ca3ce5eb59913c4baff24063d8c1a3e326925"`
[INFO] [stdout] dd38d3bae3809f01613e0560f38ca3ce5eb59913c4baff24063d8c1a3e326925
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Kurt-Yu/Rust-Crash-Course:/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 33e2a8892eea5e3dcfd04c303c6396ccb13f6aad28fd2646538d3b53736341eb
[INFO] running `"docker" "start" "-a" "33e2a8892eea5e3dcfd04c303c6396ccb13f6aad28fd2646538d3b53736341eb"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rustlang v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `"docker" "inspect" "33e2a8892eea5e3dcfd04c303c6396ccb13f6aad28fd2646538d3b53736341eb"`
[INFO] running `"docker" "rm" "-f" "33e2a8892eea5e3dcfd04c303c6396ccb13f6aad28fd2646538d3b53736341eb"`
[INFO] [stdout] 33e2a8892eea5e3dcfd04c303c6396ccb13f6aad28fd2646538d3b53736341eb
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Kurt-Yu/Rust-Crash-Course:/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 837f2d6ce7bd59bb25afc598c0c5de54e7b2758d3a5103926cd258aa99edf87d
[INFO] running `"docker" "start" "-a" "837f2d6ce7bd59bb25afc598c0c5de54e7b2758d3a5103926cd258aa99edf87d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rustlang-9298a14d2a46a386
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "837f2d6ce7bd59bb25afc598c0c5de54e7b2758d3a5103926cd258aa99edf87d"`
[INFO] running `"docker" "rm" "-f" "837f2d6ce7bd59bb25afc598c0c5de54e7b2758d3a5103926cd258aa99edf87d"`
[INFO] [stdout] 837f2d6ce7bd59bb25afc598c0c5de54e7b2758d3a5103926cd258aa99edf87d