[INFO] updating cached repository mathieu-pousse/discover
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mathieu-pousse/discover
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mathieu-pousse/discover" "work/ex/beta-1.38-1/sources/1.37.0/gh/mathieu-pousse/discover"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/mathieu-pousse/discover'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mathieu-pousse/discover" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mathieu-pousse/discover"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mathieu-pousse/discover'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 618ccb86c8b90815495d7355be37d3ecea6d9357
[INFO] sha for GitHub repo mathieu-pousse/discover: 618ccb86c8b90815495d7355be37d3ecea6d9357
[INFO] validating manifest of mathieu-pousse/discover 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 mathieu-pousse/discover 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 mathieu-pousse/discover
[INFO] finished frobbing mathieu-pousse/discover
[INFO] frobbed toml for mathieu-pousse/discover written to work/ex/beta-1.38-1/sources/1.37.0/gh/mathieu-pousse/discover/Cargo.toml
[INFO] started frobbing mathieu-pousse/discover
[INFO] finished frobbing mathieu-pousse/discover
[INFO] frobbed toml for mathieu-pousse/discover written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mathieu-pousse/discover/Cargo.toml
[INFO] crate mathieu-pousse/discover 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] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mathieu-pousse/discover/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 mathieu-pousse/discover 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-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mathieu-pousse/discover:/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] a6167460e8c05d3b705a4b2a1b9e2bacd60078dcd70711d6cdf095682c01e744
[INFO] running `"docker" "start" "-a" "a6167460e8c05d3b705a4b2a1b9e2bacd60078dcd70711d6cdf095682c01e744"`
[INFO] [stderr]    Compiling discover v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `"docker" "inspect" "a6167460e8c05d3b705a4b2a1b9e2bacd60078dcd70711d6cdf095682c01e744"`
[INFO] running `"docker" "rm" "-f" "a6167460e8c05d3b705a4b2a1b9e2bacd60078dcd70711d6cdf095682c01e744"`
[INFO] [stdout] a6167460e8c05d3b705a4b2a1b9e2bacd60078dcd70711d6cdf095682c01e744
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mathieu-pousse/discover:/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] 0947a822bc96087608dfb0de2301924d42fb63f2dc75917ada86eee885ffd809
[INFO] running `"docker" "start" "-a" "0947a822bc96087608dfb0de2301924d42fb63f2dc75917ada86eee885ffd809"`
[INFO] [stderr]    Compiling discover v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `"docker" "inspect" "0947a822bc96087608dfb0de2301924d42fb63f2dc75917ada86eee885ffd809"`
[INFO] running `"docker" "rm" "-f" "0947a822bc96087608dfb0de2301924d42fb63f2dc75917ada86eee885ffd809"`
[INFO] [stdout] 0947a822bc96087608dfb0de2301924d42fb63f2dc75917ada86eee885ffd809
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mathieu-pousse/discover:/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] 481bcc54d71fbdfe7997beedc974f48651ad1b5c1b63a6a76034728970e5ade4
[INFO] running `"docker" "start" "-a" "481bcc54d71fbdfe7997beedc974f48651ad1b5c1b63a6a76034728970e5ade4"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/discover-ad2a818d2ffef060
[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" "481bcc54d71fbdfe7997beedc974f48651ad1b5c1b63a6a76034728970e5ade4"`
[INFO] running `"docker" "rm" "-f" "481bcc54d71fbdfe7997beedc974f48651ad1b5c1b63a6a76034728970e5ade4"`
[INFO] [stdout] 481bcc54d71fbdfe7997beedc974f48651ad1b5c1b63a6a76034728970e5ade4