[INFO] crate playlist-decoder 0.7.0 is already in cache
[INFO] extracting crate playlist-decoder 0.7.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/playlist-decoder/0.7.0
[INFO] extracting crate playlist-decoder 0.7.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/playlist-decoder/0.7.0
[INFO] validating manifest of playlist-decoder-0.7.0 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 playlist-decoder-0.7.0 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 playlist-decoder-0.7.0
[INFO] finished frobbing playlist-decoder-0.7.0
[INFO] frobbed toml for playlist-decoder-0.7.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/playlist-decoder/0.7.0/Cargo.toml
[INFO] started frobbing playlist-decoder-0.7.0
[INFO] finished frobbing playlist-decoder-0.7.0
[INFO] frobbed toml for playlist-decoder-0.7.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/playlist-decoder/0.7.0/Cargo.toml
[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 playlist-decoder-0.7.0 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-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/playlist-decoder/0.7.0:/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] 9a77e472b757c5172eae5d16ae69ad611e057351667069d78d02fbd7421dae87
[INFO] running `"docker" "start" "-a" "9a77e472b757c5172eae5d16ae69ad611e057351667069d78d02fbd7421dae87"`
[INFO] [stderr]    Compiling quick-xml v0.12.4
[INFO] [stderr]    Compiling playlist-decoder v0.7.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/check.rs:10:17
[INFO] [stderr]    |
[INFO] [stderr] 10 |             let mut f = File::open(filename).expect("file not found");
[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] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/check.rs:11:17
[INFO] [stderr]    |
[INFO] [stderr] 11 |             let mut contents = String::new();
[INFO] [stderr]    |                 ----^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.66s
[INFO] running `"docker" "inspect" "9a77e472b757c5172eae5d16ae69ad611e057351667069d78d02fbd7421dae87"`
[INFO] running `"docker" "rm" "-f" "9a77e472b757c5172eae5d16ae69ad611e057351667069d78d02fbd7421dae87"`
[INFO] [stdout] 9a77e472b757c5172eae5d16ae69ad611e057351667069d78d02fbd7421dae87
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/playlist-decoder/0.7.0:/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] 6e91cd4ab8668260f151b5c3fecb454d27c04a4ace21ff70ec0fe75840b41e42
[INFO] running `"docker" "start" "-a" "6e91cd4ab8668260f151b5c3fecb454d27c04a4ace21ff70ec0fe75840b41e42"`
[INFO] [stderr]    Compiling playlist-decoder v0.7.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/check.rs:10:17
[INFO] [stderr]    |
[INFO] [stderr] 10 |             let mut f = File::open(filename).expect("file not found");
[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] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bin/check.rs:11:17
[INFO] [stderr]    |
[INFO] [stderr] 11 |             let mut contents = String::new();
[INFO] [stderr]    |                 ----^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.80s
[INFO] running `"docker" "inspect" "6e91cd4ab8668260f151b5c3fecb454d27c04a4ace21ff70ec0fe75840b41e42"`
[INFO] running `"docker" "rm" "-f" "6e91cd4ab8668260f151b5c3fecb454d27c04a4ace21ff70ec0fe75840b41e42"`
[INFO] [stdout] 6e91cd4ab8668260f151b5c3fecb454d27c04a4ace21ff70ec0fe75840b41e42
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/playlist-decoder/0.7.0:/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] 4c1ac85b34230f85850068419b111fc10613f28ad5da8646be635d4274a3cb58
[INFO] running `"docker" "start" "-a" "4c1ac85b34230f85850068419b111fc10613f28ad5da8646be635d4274a3cb58"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/playlist_decoder-1b902f16a71b7df3
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::pls2 ... ok
[INFO] [stdout] test tests::pls ... ok
[INFO] [stdout] test tests::m3u ... ok
[INFO] [stdout] test tests::pls3 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/check-5d39a767e6fc8fce
[INFO] [stderr]    Doc-tests playlist-decoder
[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] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - decode (line 16) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "4c1ac85b34230f85850068419b111fc10613f28ad5da8646be635d4274a3cb58"`
[INFO] running `"docker" "rm" "-f" "4c1ac85b34230f85850068419b111fc10613f28ad5da8646be635d4274a3cb58"`
[INFO] [stdout] 4c1ac85b34230f85850068419b111fc10613f28ad5da8646be635d4274a3cb58