[INFO] updating cached repository audiocogs/mp3.rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/audiocogs/mp3.rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/audiocogs/mp3.rs" "work/ex/beta-1.37-6/sources/1.36.0/gh/audiocogs/mp3.rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/audiocogs/mp3.rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/audiocogs/mp3.rs" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/audiocogs/mp3.rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/audiocogs/mp3.rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 407184f0ad208eceedbeb578340a0fe76f681af5
[INFO] sha for GitHub repo audiocogs/mp3.rs: 407184f0ad208eceedbeb578340a0fe76f681af5
[INFO] validating manifest of audiocogs/mp3.rs 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 audiocogs/mp3.rs 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 audiocogs/mp3.rs
[INFO] finished frobbing audiocogs/mp3.rs
[INFO] frobbed toml for audiocogs/mp3.rs written to work/ex/beta-1.37-6/sources/1.36.0/gh/audiocogs/mp3.rs/Cargo.toml
[INFO] started frobbing audiocogs/mp3.rs
[INFO] finished frobbing audiocogs/mp3.rs
[INFO] frobbed toml for audiocogs/mp3.rs written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/audiocogs/mp3.rs/Cargo.toml
[INFO] crate audiocogs/mp3.rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/audiocogs/mp3.rs/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[INFO] the lockfile is outdated, regenerating it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" "+1.36.0" "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 audiocogs/mp3.rs 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/gh/audiocogs/mp3.rs:/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] d622562fb8c61addac9258dd919ee186d99025229f4a3ded68c2f34378a6d792
[INFO] running `"docker" "start" "-a" "d622562fb8c61addac9258dd919ee186d99025229f4a3ded68c2f34378a6d792"`
[INFO] [stderr]    Compiling bitflags v0.1.1
[INFO] [stderr]    Compiling mp3 v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::io::Cursor`
[INFO] [stderr]  --> src/peeker.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::Cursor;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Cursor`
[INFO] [stderr]  --> src/bitreader.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::Cursor;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::SeekFrom`
[INFO] [stderr]  --> src/bitreader.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::SeekFrom;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/bitreader.rs:19:14
[INFO] [stderr]    |
[INFO] [stderr] 19 |     for _ in (0..n) {
[INFO] [stderr]    |              ^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]  --> src/layer1.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Cursor`
[INFO] [stderr]  --> src/layer1.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::Cursor;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Seek`
[INFO] [stderr]  --> src/peeker.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::Seek;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `samples`
[INFO] [stderr]   --> src/main.rs:26:15
[INFO] [stderr]    |
[INFO] [stderr] 26 |           let samples = layer1::decode_layer1(&mut reader, h.header);
[INFO] [stderr]    |               ^^^^^^^ help: consider prefixing with an underscore: `_samples`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `"docker" "inspect" "d622562fb8c61addac9258dd919ee186d99025229f4a3ded68c2f34378a6d792"`
[INFO] running `"docker" "rm" "-f" "d622562fb8c61addac9258dd919ee186d99025229f4a3ded68c2f34378a6d792"`
[INFO] [stdout] d622562fb8c61addac9258dd919ee186d99025229f4a3ded68c2f34378a6d792
[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/gh/audiocogs/mp3.rs:/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] 05272d876d9120d2014f37b10d6eaa9521126668cd73be84d77dd3dcc34466cb
[INFO] running `"docker" "start" "-a" "05272d876d9120d2014f37b10d6eaa9521126668cd73be84d77dd3dcc34466cb"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]    Compiling mp3 v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::io::SeekFrom`
[INFO] [stderr]  --> src/bitreader.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::SeekFrom;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/bitreader.rs:19:14
[INFO] [stderr]    |
[INFO] [stderr] 19 |     for _ in (0..n) {
[INFO] [stderr]    |              ^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Seek`
[INFO] [stderr]  --> src/peeker.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::Seek;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `samples`
[INFO] [stderr]   --> src/main.rs:26:15
[INFO] [stderr]    |
[INFO] [stderr] 26 |           let samples = layer1::decode_layer1(&mut reader, h.header);
[INFO] [stderr]    |               ^^^^^^^ help: consider prefixing with an underscore: `_samples`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/peeker.rs:32:7
[INFO] [stderr]    |
[INFO] [stderr] 32 |   let mut buf = Cursor::new(vec![0xFFu8, 0xAA, 0x44, 0xA3]);
[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/peeker.rs:40:7
[INFO] [stderr]    |
[INFO] [stderr] 40 |   let mut buf = Cursor::new(vec![0xFFu8, 0xAA, 0x44, 0xA3, 0x34, 0x99, 0x44]);
[INFO] [stderr]    |       ----^^^
[INFO] [stderr]    |       |
[INFO] [stderr]    |       help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.29s
[INFO] running `"docker" "inspect" "05272d876d9120d2014f37b10d6eaa9521126668cd73be84d77dd3dcc34466cb"`
[INFO] running `"docker" "rm" "-f" "05272d876d9120d2014f37b10d6eaa9521126668cd73be84d77dd3dcc34466cb"`
[INFO] [stdout] 05272d876d9120d2014f37b10d6eaa9521126668cd73be84d77dd3dcc34466cb
[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/gh/audiocogs/mp3.rs:/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] 0c015575534b1089b9c22f0252cb0f4d5c37c6cc3c5c7f661a27486d5b0c6664
[INFO] running `"docker" "start" "-a" "0c015575534b1089b9c22f0252cb0f4d5c37c6cc3c5c7f661a27486d5b0c6664"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mp3-9d0378bb9d076a7f
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test peeker::test_peek_in_medium_buf ... ok
[INFO] [stdout] test layer1::test_bit_allocations ... ok
[INFO] [stdout] test bitreader::test_medium_reads ... ok
[INFO] [stdout] test bitreader::test_stream2 ... ok
[INFO] [stdout] test bitreader::test_stream ... ok
[INFO] [stdout] test bitreader::test_short_reads ... ok
[INFO] [stdout] test bitreader::test_large_reads ... ok
[INFO] [stdout] test layer1::test_scale_factors ... ok
[INFO] [stdout] test peeker::test_peek_in_small_buf ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "0c015575534b1089b9c22f0252cb0f4d5c37c6cc3c5c7f661a27486d5b0c6664"`
[INFO] running `"docker" "rm" "-f" "0c015575534b1089b9c22f0252cb0f4d5c37c6cc3c5c7f661a27486d5b0c6664"`
[INFO] [stdout] 0c015575534b1089b9c22f0252cb0f4d5c37c6cc3c5c7f661a27486d5b0c6664