[INFO] updating cached repository mattcl/playlist-exporter
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mattcl/playlist-exporter
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mattcl/playlist-exporter" "work/ex/beta-1.38-1/sources/1.37.0/gh/mattcl/playlist-exporter"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/mattcl/playlist-exporter'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mattcl/playlist-exporter" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mattcl/playlist-exporter"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mattcl/playlist-exporter'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7090cb9bbccaba19efe439100cbd812df0fe3b39
[INFO] sha for GitHub repo mattcl/playlist-exporter: 7090cb9bbccaba19efe439100cbd812df0fe3b39
[INFO] validating manifest of mattcl/playlist-exporter 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 mattcl/playlist-exporter 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 mattcl/playlist-exporter
[INFO] finished frobbing mattcl/playlist-exporter
[INFO] frobbed toml for mattcl/playlist-exporter written to work/ex/beta-1.38-1/sources/1.37.0/gh/mattcl/playlist-exporter/Cargo.toml
[INFO] started frobbing mattcl/playlist-exporter
[INFO] finished frobbing mattcl/playlist-exporter
[INFO] frobbed toml for mattcl/playlist-exporter written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mattcl/playlist-exporter/Cargo.toml
[INFO] crate mattcl/playlist-exporter already has a lockfile, it will not be regenerated
[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 mattcl/playlist-exporter 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mattcl/playlist-exporter:/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] 844732c65f0072e390425aa092fb05697bd74ac0f89769b372b7a3783d291a3a
[INFO] running `"docker" "start" "-a" "844732c65f0072e390425aa092fb05697bd74ac0f89769b372b7a3783d291a3a"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling m3u v1.0.0
[INFO] [stderr]    Compiling playlist-exporter v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `matches`
[INFO] [stderr]   --> src/main.rs:64:12
[INFO] [stderr]    |
[INFO] [stderr] 64 | fn shuffle(matches: &ArgMatches) {}
[INFO] [stderr]    |            ^^^^^^^ help: consider prefixing with an underscore: `_matches`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.96s
[INFO] running `"docker" "inspect" "844732c65f0072e390425aa092fb05697bd74ac0f89769b372b7a3783d291a3a"`
[INFO] running `"docker" "rm" "-f" "844732c65f0072e390425aa092fb05697bd74ac0f89769b372b7a3783d291a3a"`
[INFO] [stdout] 844732c65f0072e390425aa092fb05697bd74ac0f89769b372b7a3783d291a3a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mattcl/playlist-exporter:/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] 81c398e251a9a37cce7499b4af2d3bdf720d4e2c79aad4def677c48a9c3f647f
[INFO] running `"docker" "start" "-a" "81c398e251a9a37cce7499b4af2d3bdf720d4e2c79aad4def677c48a9c3f647f"`
[INFO] [stderr]    Compiling playlist-exporter v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `matches`
[INFO] [stderr]   --> src/main.rs:64:12
[INFO] [stderr]    |
[INFO] [stderr] 64 | fn shuffle(matches: &ArgMatches) {}
[INFO] [stderr]    |            ^^^^^^^ help: consider prefixing with an underscore: `_matches`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.08s
[INFO] running `"docker" "inspect" "81c398e251a9a37cce7499b4af2d3bdf720d4e2c79aad4def677c48a9c3f647f"`
[INFO] running `"docker" "rm" "-f" "81c398e251a9a37cce7499b4af2d3bdf720d4e2c79aad4def677c48a9c3f647f"`
[INFO] [stdout] 81c398e251a9a37cce7499b4af2d3bdf720d4e2c79aad4def677c48a9c3f647f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/mattcl/playlist-exporter:/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] 4e4d755c5b33e8f93e926c5948b85cfb93195bb0f40ed9e0a0ff244cf2a244f7
[INFO] running `"docker" "start" "-a" "4e4d755c5b33e8f93e926c5948b85cfb93195bb0f40ed9e0a0ff244cf2a244f7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/playlist_exporter-1ad8f9e5aa249e4f
[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" "4e4d755c5b33e8f93e926c5948b85cfb93195bb0f40ed9e0a0ff244cf2a244f7"`
[INFO] running `"docker" "rm" "-f" "4e4d755c5b33e8f93e926c5948b85cfb93195bb0f40ed9e0a0ff244cf2a244f7"`
[INFO] [stdout] 4e4d755c5b33e8f93e926c5948b85cfb93195bb0f40ed9e0a0ff244cf2a244f7