[INFO] cloning repository ssokolow/rip_media
[INFO] running `"git" "clone" "--bare" "git://github.com/ssokolow/rip_media.git" "work/cache/sources/gh/ssokolow/rip_media"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/ssokolow/rip_media'...
[INFO] running `"git" "clone" "work/cache/sources/gh/ssokolow/rip_media" "work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/ssokolow/rip_media"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/ssokolow/rip_media'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ssokolow/rip_media" "work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/ssokolow/rip_media"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/ssokolow/rip_media'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3128f61d40fc42f5c1ad54af76e744fdc774a669
[INFO] sha for GitHub repo ssokolow/rip_media: 3128f61d40fc42f5c1ad54af76e744fdc774a669
[INFO] validating manifest of ssokolow/rip_media on toolchain master#c0086b9e8972fef9fd4af24bae20d45021ed06c6
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ssokolow/rip_media on toolchain try#290ac7b29f41ff9fa5232f9a1116ea71a3501063
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ssokolow/rip_media
[INFO] finished frobbing ssokolow/rip_media
[INFO] frobbed toml for ssokolow/rip_media written to work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/ssokolow/rip_media/Cargo.toml
[INFO] started frobbing ssokolow/rip_media
[INFO] finished frobbing ssokolow/rip_media
[INFO] frobbed toml for ssokolow/rip_media written to work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/ssokolow/rip_media/Cargo.toml
[INFO] crate ssokolow/rip_media has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking ssokolow/rip_media against master#c0086b9e8972fef9fd4af24bae20d45021ed06c6 for pr-58899
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58899/worker-7/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/ssokolow/rip_media:/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=forbid" "-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" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4b05e984fcdaa16b3b6ecbb0110a2d0f6de8ecf39d6436708936a4fbb2e53268
[INFO] running `"docker" "start" "-a" "4b05e984fcdaa16b3b6ecbb0110a2d0f6de8ecf39d6436708936a4fbb2e53268"`
[INFO] [stderr]     Checking error-chain v0.9.0
[INFO] [stderr]     Checking atty v0.2.10
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking clap v2.31.2
[INFO] [stderr]     Checking rustyline v1.0.0
[INFO] [stderr]     Checking rip_media v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/subcommands.rs:233:5
[INFO] [stderr]     |
[INFO] [stderr] 233 |     plat_provider.read_line("Insert disc and press Enter...");
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:248:13
[INFO] [stderr]     |
[INFO] [stderr] 248 |             subcommands::rip(&mut provider, subcommand_func, name);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/subcommands.rs:233:5
[INFO] [stderr]     |
[INFO] [stderr] 233 |     plat_provider.read_line("Insert disc and press Enter...");
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:248:13
[INFO] [stderr]     |
[INFO] [stderr] 248 |             subcommands::rip(&mut provider, subcommand_func, name);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.51s
[INFO] running `"docker" "inspect" "4b05e984fcdaa16b3b6ecbb0110a2d0f6de8ecf39d6436708936a4fbb2e53268"`
[INFO] running `"docker" "rm" "-f" "4b05e984fcdaa16b3b6ecbb0110a2d0f6de8ecf39d6436708936a4fbb2e53268"`
[INFO] [stdout] 4b05e984fcdaa16b3b6ecbb0110a2d0f6de8ecf39d6436708936a4fbb2e53268