[INFO] updating cached repository tac44/syncopation
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tac44/syncopation
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tac44/syncopation" "work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/tac44/syncopation"`
[INFO] [stderr] Cloning into 'work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/tac44/syncopation'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tac44/syncopation" "work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/tac44/syncopation"`
[INFO] [stderr] Cloning into 'work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/tac44/syncopation'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] da7de785f1a29e443357fee0dd2b3a289824e26b
[INFO] sha for GitHub repo tac44/syncopation: da7de785f1a29e443357fee0dd2b3a289824e26b
[INFO] validating manifest of tac44/syncopation on toolchain master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of tac44/syncopation on toolchain try#18481b65f318e0b4b20c0fc61340054701719d6c
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing tac44/syncopation
[INFO] finished frobbing tac44/syncopation
[INFO] frobbed toml for tac44/syncopation written to work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/tac44/syncopation/Cargo.toml
[INFO] started frobbing tac44/syncopation
[INFO] finished frobbing tac44/syncopation
[INFO] frobbed toml for tac44/syncopation written to work/ex/pr-62507/sources/try#18481b65f318e0b4b20c0fc61340054701719d6c/gh/tac44/syncopation/Cargo.toml
[INFO] crate tac44/syncopation already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+18481b65f318e0b4b20c0fc61340054701719d6c-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking tac44/syncopation against master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7 for pr-62507
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62507/worker-6/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62507/sources/master#78ca1bda3522b14bc0336bc01dd1d49fdba2cda7/gh/tac44/syncopation:/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" "+78ca1bda3522b14bc0336bc01dd1d49fdba2cda7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 037e02704255c39bc3db7620d6a2983842e66f11e36781b0585f65ead1fcebcd
[INFO] running `"docker" "start" "-a" "037e02704255c39bc3db7620d6a2983842e66f11e36781b0585f65ead1fcebcd"`
[INFO] [stderr]    Compiling libz-sys v1.0.23
[INFO] [stderr]    Compiling libssh2-sys v0.2.11
[INFO] [stderr]     Checking serde_json v1.0.31
[INFO] [stderr]     Checking ssh2 v0.3.3
[INFO] [stderr]     Checking syncopation v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.72s
[INFO] running `"docker" "inspect" "037e02704255c39bc3db7620d6a2983842e66f11e36781b0585f65ead1fcebcd"`
[INFO] running `"docker" "rm" "-f" "037e02704255c39bc3db7620d6a2983842e66f11e36781b0585f65ead1fcebcd"`
[INFO] [stdout] 037e02704255c39bc3db7620d6a2983842e66f11e36781b0585f65ead1fcebcd