[INFO] crate cargo-mutagen 0.1.2 is already in cache
[INFO] extracting crate cargo-mutagen 0.1.2 into work/ex/beta-1.37-6/sources/1.36.0/reg/cargo-mutagen/0.1.2
[INFO] extracting crate cargo-mutagen 0.1.2 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/cargo-mutagen/0.1.2
[INFO] validating manifest of cargo-mutagen-0.1.2 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of cargo-mutagen-0.1.2 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing cargo-mutagen-0.1.2
[INFO] finished frobbing cargo-mutagen-0.1.2
[INFO] frobbed toml for cargo-mutagen-0.1.2 written to work/ex/beta-1.37-6/sources/1.36.0/reg/cargo-mutagen/0.1.2/Cargo.toml
[INFO] started frobbing cargo-mutagen-0.1.2
[INFO] finished frobbing cargo-mutagen-0.1.2
[INFO] frobbed toml for cargo-mutagen-0.1.2 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/cargo-mutagen/0.1.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing cargo-mutagen-0.1.2 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/cargo-mutagen/0.1.2:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] a5b8b19e95ddb3b35bd25dacf90b068b9e4ab2738daf520838978050ca7d4b88
[INFO] running `"docker" "start" "-a" "a5b8b19e95ddb3b35bd25dacf90b068b9e4ab2738daf520838978050ca7d4b88"`
[INFO] [stderr]    Compiling json v0.11.14
[INFO] [stderr]    Compiling wait-timeout v0.1.5
[INFO] [stderr]    Compiling cargo-mutagen v0.1.2 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.81s
[INFO] running `"docker" "inspect" "a5b8b19e95ddb3b35bd25dacf90b068b9e4ab2738daf520838978050ca7d4b88"`
[INFO] running `"docker" "rm" "-f" "a5b8b19e95ddb3b35bd25dacf90b068b9e4ab2738daf520838978050ca7d4b88"`
[INFO] [stdout] a5b8b19e95ddb3b35bd25dacf90b068b9e4ab2738daf520838978050ca7d4b88
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/cargo-mutagen/0.1.2:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 4680acc055e6013b063c1ce7ad3e9664629b2b7aace6852684a5f932a12afc97
[INFO] running `"docker" "start" "-a" "4680acc055e6013b063c1ce7ad3e9664629b2b7aace6852684a5f932a12afc97"`
[INFO] [stderr]    Compiling cargo-mutagen v0.1.2 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.54s
[INFO] running `"docker" "inspect" "4680acc055e6013b063c1ce7ad3e9664629b2b7aace6852684a5f932a12afc97"`
[INFO] running `"docker" "rm" "-f" "4680acc055e6013b063c1ce7ad3e9664629b2b7aace6852684a5f932a12afc97"`
[INFO] [stdout] 4680acc055e6013b063c1ce7ad3e9664629b2b7aace6852684a5f932a12afc97
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/cargo-mutagen/0.1.2:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] eadaf8a32a0918ebde5fa1e2b8f2861db523913baa4155b3bdbc8357e43ebf8b
[INFO] running `"docker" "start" "-a" "eadaf8a32a0918ebde5fa1e2b8f2861db523913baa4155b3bdbc8357e43ebf8b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/cargo_mutagen-44e6040885bb0f09
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::it_decodes_well_formed_mutations ... ok
[INFO] [stdout] test runner::tests::it_returns_test_if_they_were_added ... ok
[INFO] [stdout] test tests::it_fails_to_decode_malformed_mutations ... ok
[INFO] [stdout] test runner::tests::it_returns_no_tests_on_empty ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "eadaf8a32a0918ebde5fa1e2b8f2861db523913baa4155b3bdbc8357e43ebf8b"`
[INFO] running `"docker" "rm" "-f" "eadaf8a32a0918ebde5fa1e2b8f2861db523913baa4155b3bdbc8357e43ebf8b"`
[INFO] [stdout] eadaf8a32a0918ebde5fa1e2b8f2861db523913baa4155b3bdbc8357e43ebf8b