[INFO] cloning repository CallumHoward/walker
[INFO] running `"git" "clone" "--bare" "git://github.com/CallumHoward/walker.git" "work/cache/sources/gh/CallumHoward/walker"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/CallumHoward/walker'...
[INFO] running `"git" "clone" "work/cache/sources/gh/CallumHoward/walker" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/CallumHoward/walker"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/CallumHoward/walker'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/CallumHoward/walker" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/CallumHoward/walker"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/CallumHoward/walker'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 520ce48eee602ad01de6343e4fa1b5916ce0b900
[INFO] sha for GitHub repo CallumHoward/walker: 520ce48eee602ad01de6343e4fa1b5916ce0b900
[INFO] validating manifest of CallumHoward/walker on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of CallumHoward/walker on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing CallumHoward/walker
[INFO] finished frobbing CallumHoward/walker
[INFO] frobbed toml for CallumHoward/walker written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/CallumHoward/walker/Cargo.toml
[INFO] started frobbing CallumHoward/walker
[INFO] finished frobbing CallumHoward/walker
[INFO] frobbed toml for CallumHoward/walker written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/CallumHoward/walker/Cargo.toml
[INFO] crate CallumHoward/walker already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing CallumHoward/walker against try#e212b7d492c96d3837691ba29d32d5f468933fb8 for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/CallumHoward/walker:/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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "build" "--frozen"`
[INFO] [stdout] d29405b12ee742f011a6ea9b7daddaf73da791e166cca3bef6aea297c1cc636b
[INFO] running `"docker" "start" "-a" "d29405b12ee742f011a6ea9b7daddaf73da791e166cca3bef6aea297c1cc636b"`
[INFO] [stderr]    Compiling libc v0.2.24
[INFO] [stderr]    Compiling fnv v1.0.5
[INFO] [stderr]    Compiling lazy_static v0.2.8
[INFO] [stderr]    Compiling thread-id v3.1.0
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling thread_local v0.3.3
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stderr]    Compiling globset v0.2.0
[INFO] [stderr]    Compiling ignore v0.2.0
[INFO] [stderr]    Compiling walker v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.47s
[INFO] running `"docker" "inspect" "d29405b12ee742f011a6ea9b7daddaf73da791e166cca3bef6aea297c1cc636b"`
[INFO] running `"docker" "rm" "-f" "d29405b12ee742f011a6ea9b7daddaf73da791e166cca3bef6aea297c1cc636b"`
[INFO] [stdout] d29405b12ee742f011a6ea9b7daddaf73da791e166cca3bef6aea297c1cc636b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/CallumHoward/walker:/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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 9cce20c9569ac527bde01b6ddbe77c538fa13b2cadef99db42d494f8164fa2f0
[INFO] running `"docker" "start" "-a" "9cce20c9569ac527bde01b6ddbe77c538fa13b2cadef99db42d494f8164fa2f0"`
[INFO] [stderr]    Compiling walker v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.10s
[INFO] running `"docker" "inspect" "9cce20c9569ac527bde01b6ddbe77c538fa13b2cadef99db42d494f8164fa2f0"`
[INFO] running `"docker" "rm" "-f" "9cce20c9569ac527bde01b6ddbe77c538fa13b2cadef99db42d494f8164fa2f0"`
[INFO] [stdout] 9cce20c9569ac527bde01b6ddbe77c538fa13b2cadef99db42d494f8164fa2f0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/CallumHoward/walker:/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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen"`
[INFO] [stdout] 1d696785defa20d51bf0b34b19492a4b4c2106225a1297e71311ff0f8f5736de
[INFO] running `"docker" "start" "-a" "1d696785defa20d51bf0b34b19492a4b4c2106225a1297e71311ff0f8f5736de"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/walker-891e59cac5384c5a
[INFO] [stderr]      Running /opt/crater/target/debug/deps/walker-14596089cf1a30fb
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 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] [stderr]    Doc-tests walker
[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" "1d696785defa20d51bf0b34b19492a4b4c2106225a1297e71311ff0f8f5736de"`
[INFO] running `"docker" "rm" "-f" "1d696785defa20d51bf0b34b19492a4b4c2106225a1297e71311ff0f8f5736de"`
[INFO] [stdout] 1d696785defa20d51bf0b34b19492a4b4c2106225a1297e71311ff0f8f5736de