[INFO] updating cached repository Arkanosis/vstatus
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Arkanosis/vstatus
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Arkanosis/vstatus" "work/ex/beta-1.38-1/sources/1.37.0/gh/Arkanosis/vstatus"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Arkanosis/vstatus'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Arkanosis/vstatus" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Arkanosis/vstatus"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Arkanosis/vstatus'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d5f92de53ed11b761558ef8bf801e3a0e24257c0
[INFO] sha for GitHub repo Arkanosis/vstatus: d5f92de53ed11b761558ef8bf801e3a0e24257c0
[INFO] validating manifest of Arkanosis/vstatus 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 Arkanosis/vstatus 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 Arkanosis/vstatus
[INFO] finished frobbing Arkanosis/vstatus
[INFO] frobbed toml for Arkanosis/vstatus written to work/ex/beta-1.38-1/sources/1.37.0/gh/Arkanosis/vstatus/Cargo.toml
[INFO] started frobbing Arkanosis/vstatus
[INFO] finished frobbing Arkanosis/vstatus
[INFO] frobbed toml for Arkanosis/vstatus written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Arkanosis/vstatus/Cargo.toml
[INFO] crate Arkanosis/vstatus 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing Arkanosis/vstatus 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Arkanosis/vstatus:/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] 83be915af3b7a5614bd9062f6ac3346ca288a0ea014479b05ec4104b45d264cc
[INFO] running `"docker" "start" "-a" "83be915af3b7a5614bd9062f6ac3346ca288a0ea014479b05ec4104b45d264cc"`
[INFO] [stderr]    Compiling libc v0.2.48
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling memchr v2.1.3
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.85
[INFO] [stderr]    Compiling docopt v1.0.2
[INFO] [stderr]    Compiling vstatus v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `format`
[INFO] [stderr]  --> src/lib.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn run(format: &str) -> i32 {
[INFO] [stderr]   |            ^^^^^^ help: consider prefixing with an underscore: `_format`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 32.66s
[INFO] running `"docker" "inspect" "83be915af3b7a5614bd9062f6ac3346ca288a0ea014479b05ec4104b45d264cc"`
[INFO] running `"docker" "rm" "-f" "83be915af3b7a5614bd9062f6ac3346ca288a0ea014479b05ec4104b45d264cc"`
[INFO] [stdout] 83be915af3b7a5614bd9062f6ac3346ca288a0ea014479b05ec4104b45d264cc
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Arkanosis/vstatus:/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] 6b0c3e7aa247cdabf9e6a95cbad7c6f7794043adfdcdb096e7cc2b9a23292f4f
[INFO] running `"docker" "start" "-a" "6b0c3e7aa247cdabf9e6a95cbad7c6f7794043adfdcdb096e7cc2b9a23292f4f"`
[INFO] [stderr]    Compiling vstatus v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `format`
[INFO] [stderr]  --> src/lib.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn run(format: &str) -> i32 {
[INFO] [stderr]   |            ^^^^^^ help: consider prefixing with an underscore: `_format`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.59s
[INFO] running `"docker" "inspect" "6b0c3e7aa247cdabf9e6a95cbad7c6f7794043adfdcdb096e7cc2b9a23292f4f"`
[INFO] running `"docker" "rm" "-f" "6b0c3e7aa247cdabf9e6a95cbad7c6f7794043adfdcdb096e7cc2b9a23292f4f"`
[INFO] [stdout] 6b0c3e7aa247cdabf9e6a95cbad7c6f7794043adfdcdb096e7cc2b9a23292f4f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Arkanosis/vstatus:/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] b9b6cda94b7eb1d16d6bb04f0946a926f82570519ca937cd8d2025b49a4541bf
[INFO] running `"docker" "start" "-a" "b9b6cda94b7eb1d16d6bb04f0946a926f82570519ca937cd8d2025b49a4541bf"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/vstatus-609f2c2d8510eb58
[INFO] [stderr]      Running /opt/crater/target/debug/deps/vstatus-9a707c2254ee20b9
[INFO] [stderr]    Doc-tests vstatus
[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] [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] [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" "b9b6cda94b7eb1d16d6bb04f0946a926f82570519ca937cd8d2025b49a4541bf"`
[INFO] running `"docker" "rm" "-f" "b9b6cda94b7eb1d16d6bb04f0946a926f82570519ca937cd8d2025b49a4541bf"`
[INFO] [stdout] b9b6cda94b7eb1d16d6bb04f0946a926f82570519ca937cd8d2025b49a4541bf