[INFO] updating cached repository claudusd/learn-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/claudusd/learn-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/claudusd/learn-rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/claudusd/learn-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/claudusd/learn-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/claudusd/learn-rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/claudusd/learn-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/claudusd/learn-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] fb581ea23a2b03262f42344b640ebe2624c1dcc4
[INFO] sha for GitHub repo claudusd/learn-rust: fb581ea23a2b03262f42344b640ebe2624c1dcc4
[INFO] validating manifest of claudusd/learn-rust 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 claudusd/learn-rust 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 claudusd/learn-rust
[INFO] finished frobbing claudusd/learn-rust
[INFO] frobbed toml for claudusd/learn-rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/claudusd/learn-rust/Cargo.toml
[INFO] started frobbing claudusd/learn-rust
[INFO] finished frobbing claudusd/learn-rust
[INFO] frobbed toml for claudusd/learn-rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/claudusd/learn-rust/Cargo.toml
[INFO] crate claudusd/learn-rust 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 claudusd/learn-rust against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/claudusd/learn-rust:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 55882f17af3da42e15dd984f5a312e64b0911bf5f2cf3456a49c3aec825cf7c3
[INFO] running `"docker" "start" "-a" "55882f17af3da42e15dd984f5a312e64b0911bf5f2cf3456a49c3aec825cf7c3"`
[INFO] [stderr]    Compiling learning v0.0.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `"docker" "inspect" "55882f17af3da42e15dd984f5a312e64b0911bf5f2cf3456a49c3aec825cf7c3"`
[INFO] running `"docker" "rm" "-f" "55882f17af3da42e15dd984f5a312e64b0911bf5f2cf3456a49c3aec825cf7c3"`
[INFO] [stdout] 55882f17af3da42e15dd984f5a312e64b0911bf5f2cf3456a49c3aec825cf7c3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/claudusd/learn-rust:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 1a6a271e77dac9b29c3021059c456a40f1eba69a558c8c4cb3d09513f9928bc2
[INFO] running `"docker" "start" "-a" "1a6a271e77dac9b29c3021059c456a40f1eba69a558c8c4cb3d09513f9928bc2"`
[INFO] [stderr]    Compiling learning v0.0.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `"docker" "inspect" "1a6a271e77dac9b29c3021059c456a40f1eba69a558c8c4cb3d09513f9928bc2"`
[INFO] running `"docker" "rm" "-f" "1a6a271e77dac9b29c3021059c456a40f1eba69a558c8c4cb3d09513f9928bc2"`
[INFO] [stdout] 1a6a271e77dac9b29c3021059c456a40f1eba69a558c8c4cb3d09513f9928bc2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/claudusd/learn-rust:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] ff74547a7a6e8335b28a5f56281633e8d2a7199c4ba7f1e1f1a1a67b0d294815
[INFO] running `"docker" "start" "-a" "ff74547a7a6e8335b28a5f56281633e8d2a7199c4ba7f1e1f1a1a67b0d294815"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/learning-c843cb81f226a5fb
[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" "ff74547a7a6e8335b28a5f56281633e8d2a7199c4ba7f1e1f1a1a67b0d294815"`
[INFO] running `"docker" "rm" "-f" "ff74547a7a6e8335b28a5f56281633e8d2a7199c4ba7f1e1f1a1a67b0d294815"`
[INFO] [stdout] ff74547a7a6e8335b28a5f56281633e8d2a7199c4ba7f1e1f1a1a67b0d294815