[INFO] crate mossy 0.1.2 is already in cache
[INFO] extracting crate mossy 0.1.2 into work/ex/beta-1.37-6/sources/1.36.0/reg/mossy/0.1.2
[INFO] extracting crate mossy 0.1.2 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/mossy/0.1.2
[INFO] validating manifest of mossy-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 mossy-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 mossy-0.1.2
[INFO] finished frobbing mossy-0.1.2
[INFO] frobbed toml for mossy-0.1.2 written to work/ex/beta-1.37-6/sources/1.36.0/reg/mossy/0.1.2/Cargo.toml
[INFO] started frobbing mossy-0.1.2
[INFO] finished frobbing mossy-0.1.2
[INFO] frobbed toml for mossy-0.1.2 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/mossy/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 mossy-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-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/mossy/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] e9caf7e84cfa0fa8ce63c13fb55c80906f2301c9a8255803f136be070a066fb0
[INFO] running `"docker" "start" "-a" "e9caf7e84cfa0fa8ce63c13fb55c80906f2301c9a8255803f136be070a066fb0"`
[INFO] [stderr]    Compiling mossy v0.1.2 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lexer.rs:66:21
[INFO] [stderr]    |
[INFO] [stderr] 66 |                 let mut find_lang: Option<_> = Regex::new(r"[\w[0-9]]+")
[INFO] [stderr]    |                     ----^^^^^^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `"docker" "inspect" "e9caf7e84cfa0fa8ce63c13fb55c80906f2301c9a8255803f136be070a066fb0"`
[INFO] running `"docker" "rm" "-f" "e9caf7e84cfa0fa8ce63c13fb55c80906f2301c9a8255803f136be070a066fb0"`
[INFO] [stdout] e9caf7e84cfa0fa8ce63c13fb55c80906f2301c9a8255803f136be070a066fb0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/mossy/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] 9ad7186a549989bb4fe369b7bd9f908d0087ec825827d91546fa828b34019ad0
[INFO] running `"docker" "start" "-a" "9ad7186a549989bb4fe369b7bd9f908d0087ec825827d91546fa828b34019ad0"`
[INFO] [stderr]    Compiling mossy v0.1.2 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lexer.rs:66:21
[INFO] [stderr]    |
[INFO] [stderr] 66 |                 let mut find_lang: Option<_> = Regex::new(r"[\w[0-9]]+")
[INFO] [stderr]    |                     ----^^^^^^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.46s
[INFO] running `"docker" "inspect" "9ad7186a549989bb4fe369b7bd9f908d0087ec825827d91546fa828b34019ad0"`
[INFO] running `"docker" "rm" "-f" "9ad7186a549989bb4fe369b7bd9f908d0087ec825827d91546fa828b34019ad0"`
[INFO] [stdout] 9ad7186a549989bb4fe369b7bd9f908d0087ec825827d91546fa828b34019ad0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/mossy/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] 3ccffd1a62494da1e2e269bb796c47b7a78ca11573afae5400ce58ecab96931a
[INFO] running `"docker" "start" "-a" "3ccffd1a62494da1e2e269bb796c47b7a78ca11573afae5400ce58ecab96931a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mossy-4b424e1b392eb99c
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test code ... ok
[INFO] [stdout] test sharp_heading ... ok
[INFO] [stdout] test line_heading ... ok
[INFO] [stdout] test inline_link ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mossy
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/lib.rs - App::exec (line 47) ... ok
[INFO] [stdout] test src/lib.rs -  (line 9) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "3ccffd1a62494da1e2e269bb796c47b7a78ca11573afae5400ce58ecab96931a"`
[INFO] running `"docker" "rm" "-f" "3ccffd1a62494da1e2e269bb796c47b7a78ca11573afae5400ce58ecab96931a"`
[INFO] [stdout] 3ccffd1a62494da1e2e269bb796c47b7a78ca11573afae5400ce58ecab96931a