[INFO] updating cached repository tungel/rust-playground
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tungel/rust-playground
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tungel/rust-playground" "work/ex/pr-60444/sources/master#92b5e20ad59b183a2e6cd79423f54b8aa7ac9cbf/gh/tungel/rust-playground"`
[INFO] [stderr] Cloning into 'work/ex/pr-60444/sources/master#92b5e20ad59b183a2e6cd79423f54b8aa7ac9cbf/gh/tungel/rust-playground'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tungel/rust-playground" "work/ex/pr-60444/sources/try#cf8e5a06b289fbcdaf75ca55c057b2cb09fff33b/gh/tungel/rust-playground"`
[INFO] [stderr] Cloning into 'work/ex/pr-60444/sources/try#cf8e5a06b289fbcdaf75ca55c057b2cb09fff33b/gh/tungel/rust-playground'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b0afd47de19229bea9758382f32162faf28592a0
[INFO] sha for GitHub repo tungel/rust-playground: b0afd47de19229bea9758382f32162faf28592a0
[INFO] validating manifest of tungel/rust-playground on toolchain master#92b5e20ad59b183a2e6cd79423f54b8aa7ac9cbf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+92b5e20ad59b183a2e6cd79423f54b8aa7ac9cbf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of tungel/rust-playground on toolchain try#cf8e5a06b289fbcdaf75ca55c057b2cb09fff33b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+cf8e5a06b289fbcdaf75ca55c057b2cb09fff33b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing tungel/rust-playground
[INFO] finished frobbing tungel/rust-playground
[INFO] frobbed toml for tungel/rust-playground written to work/ex/pr-60444/sources/master#92b5e20ad59b183a2e6cd79423f54b8aa7ac9cbf/gh/tungel/rust-playground/Cargo.toml
[INFO] started frobbing tungel/rust-playground
[INFO] finished frobbing tungel/rust-playground
[INFO] frobbed toml for tungel/rust-playground written to work/ex/pr-60444/sources/try#cf8e5a06b289fbcdaf75ca55c057b2cb09fff33b/gh/tungel/rust-playground/Cargo.toml
[INFO] crate tungel/rust-playground already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+92b5e20ad59b183a2e6cd79423f54b8aa7ac9cbf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+cf8e5a06b289fbcdaf75ca55c057b2cb09fff33b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking tungel/rust-playground against try#cf8e5a06b289fbcdaf75ca55c057b2cb09fff33b for pr-60444
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60444/worker-6/try#cf8e5a06b289fbcdaf75ca55c057b2cb09fff33b:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60444/sources/try#cf8e5a06b289fbcdaf75ca55c057b2cb09fff33b/gh/tungel/rust-playground:/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" "+cf8e5a06b289fbcdaf75ca55c057b2cb09fff33b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 7cfc0e5b380987a5848cf20809918fb580a04f6ee4dec30ddecaf5c6ed0631bf
[INFO] running `"docker" "start" "-a" "7cfc0e5b380987a5848cf20809918fb580a04f6ee4dec30ddecaf5c6ed0631bf"`
[INFO] [stderr]     Checking rust-playground v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `"docker" "inspect" "7cfc0e5b380987a5848cf20809918fb580a04f6ee4dec30ddecaf5c6ed0631bf"`
[INFO] running `"docker" "rm" "-f" "7cfc0e5b380987a5848cf20809918fb580a04f6ee4dec30ddecaf5c6ed0631bf"`
[INFO] [stdout] 7cfc0e5b380987a5848cf20809918fb580a04f6ee4dec30ddecaf5c6ed0631bf