[INFO] updating cached repository ckafi/penandink
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ckafi/penandink
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ckafi/penandink" "work/ex/beta-1.37-6/sources/1.36.0/gh/ckafi/penandink"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/ckafi/penandink'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ckafi/penandink" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ckafi/penandink"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ckafi/penandink'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5d7f9c729c839945b176981dfed2a35426b4b494
[INFO] sha for GitHub repo ckafi/penandink: 5d7f9c729c839945b176981dfed2a35426b4b494
[INFO] validating manifest of ckafi/penandink on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ckafi/penandink on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ckafi/penandink
[INFO] finished frobbing ckafi/penandink
[INFO] frobbed toml for ckafi/penandink written to work/ex/beta-1.37-6/sources/1.36.0/gh/ckafi/penandink/Cargo.toml
[INFO] started frobbing ckafi/penandink
[INFO] finished frobbing ckafi/penandink
[INFO] frobbed toml for ckafi/penandink written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ckafi/penandink/Cargo.toml
[INFO] crate ckafi/penandink already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing ckafi/penandink against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ckafi/penandink:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 43e154409af973091d9cef83b086598f4354038157bfc13d12189fbf13bc61c8
[INFO] running `"docker" "start" "-a" "43e154409af973091d9cef83b086598f4354038157bfc13d12189fbf13bc61c8"`
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling csv v0.15.0
[INFO] [stderr]    Compiling penandink v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |         io::stdout().flush();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.97s
[INFO] running `"docker" "inspect" "43e154409af973091d9cef83b086598f4354038157bfc13d12189fbf13bc61c8"`
[INFO] running `"docker" "rm" "-f" "43e154409af973091d9cef83b086598f4354038157bfc13d12189fbf13bc61c8"`
[INFO] [stdout] 43e154409af973091d9cef83b086598f4354038157bfc13d12189fbf13bc61c8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ckafi/penandink:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 640959e1f591558d1db703e025a58d5c358891c401f7fed119fa0729b2edf465
[INFO] running `"docker" "start" "-a" "640959e1f591558d1db703e025a58d5c358891c401f7fed119fa0729b2edf465"`
[INFO] [stderr]    Compiling penandink v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |         io::stdout().flush();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `"docker" "inspect" "640959e1f591558d1db703e025a58d5c358891c401f7fed119fa0729b2edf465"`
[INFO] running `"docker" "rm" "-f" "640959e1f591558d1db703e025a58d5c358891c401f7fed119fa0729b2edf465"`
[INFO] [stdout] 640959e1f591558d1db703e025a58d5c358891c401f7fed119fa0729b2edf465
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ckafi/penandink:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 2ec10982d4a6dbdb67365cf0a0ae704af0428dcdb77b8e63c071548686fed651
[INFO] running `"docker" "start" "-a" "2ec10982d4a6dbdb67365cf0a0ae704af0428dcdb77b8e63c071548686fed651"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/penandink-35c6d9b17c395dda
[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" "2ec10982d4a6dbdb67365cf0a0ae704af0428dcdb77b8e63c071548686fed651"`
[INFO] running `"docker" "rm" "-f" "2ec10982d4a6dbdb67365cf0a0ae704af0428dcdb77b8e63c071548686fed651"`
[INFO] [stdout] 2ec10982d4a6dbdb67365cf0a0ae704af0428dcdb77b8e63c071548686fed651