[INFO] crate ffmpeg-screen-recorder 1.0.7 is already in cache
[INFO] extracting crate ffmpeg-screen-recorder 1.0.7 into work/ex/beta-1.38-1/sources/1.37.0/reg/ffmpeg-screen-recorder/1.0.7
[INFO] extracting crate ffmpeg-screen-recorder 1.0.7 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/ffmpeg-screen-recorder/1.0.7
[INFO] validating manifest of ffmpeg-screen-recorder-1.0.7 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 ffmpeg-screen-recorder-1.0.7 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 ffmpeg-screen-recorder-1.0.7
[INFO] finished frobbing ffmpeg-screen-recorder-1.0.7
[INFO] frobbed toml for ffmpeg-screen-recorder-1.0.7 written to work/ex/beta-1.38-1/sources/1.37.0/reg/ffmpeg-screen-recorder/1.0.7/Cargo.toml
[INFO] started frobbing ffmpeg-screen-recorder-1.0.7
[INFO] finished frobbing ffmpeg-screen-recorder-1.0.7
[INFO] frobbed toml for ffmpeg-screen-recorder-1.0.7 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/ffmpeg-screen-recorder/1.0.7/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] [stderr]     Blocking waiting for file lock on package cache
[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 ffmpeg-screen-recorder-1.0.7 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/ffmpeg-screen-recorder/1.0.7:/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] 6fe60e9d0eb9ddf8db479a91bc92067b0f26f10007e90d5773aea51c6caa32c7
[INFO] running `"docker" "start" "-a" "6fe60e9d0eb9ddf8db479a91bc92067b0f26f10007e90d5773aea51c6caa32c7"`
[INFO] [stderr]    Compiling nix v0.11.1
[INFO] [stderr]    Compiling terminal_size v0.1.8
[INFO] [stderr]    Compiling subprocess v0.1.18
[INFO] [stderr]    Compiling ffmpeg-screen-recorder v1.0.7 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:87:17
[INFO] [stderr]    |
[INFO] [stderr] 87 |             let mut path = Path::new(ffmpeg_path);
[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 13.07s
[INFO] running `"docker" "inspect" "6fe60e9d0eb9ddf8db479a91bc92067b0f26f10007e90d5773aea51c6caa32c7"`
[INFO] running `"docker" "rm" "-f" "6fe60e9d0eb9ddf8db479a91bc92067b0f26f10007e90d5773aea51c6caa32c7"`
[INFO] [stdout] 6fe60e9d0eb9ddf8db479a91bc92067b0f26f10007e90d5773aea51c6caa32c7
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/ffmpeg-screen-recorder/1.0.7:/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] 8b582e4abaddcdeed47a0dd34d4ee1ff4432c349a617df27fdd28cef6925bbc0
[INFO] running `"docker" "start" "-a" "8b582e4abaddcdeed47a0dd34d4ee1ff4432c349a617df27fdd28cef6925bbc0"`
[INFO] [stderr]    Compiling ffmpeg-screen-recorder v1.0.7 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:87:17
[INFO] [stderr]    |
[INFO] [stderr] 87 |             let mut path = Path::new(ffmpeg_path);
[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 1.04s
[INFO] running `"docker" "inspect" "8b582e4abaddcdeed47a0dd34d4ee1ff4432c349a617df27fdd28cef6925bbc0"`
[INFO] running `"docker" "rm" "-f" "8b582e4abaddcdeed47a0dd34d4ee1ff4432c349a617df27fdd28cef6925bbc0"`
[INFO] [stdout] 8b582e4abaddcdeed47a0dd34d4ee1ff4432c349a617df27fdd28cef6925bbc0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/ffmpeg-screen-recorder/1.0.7:/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] ee024b524d3b332d1401a59c3e40e98a5a0830424b4d3dd10400caa6afa0c9bf
[INFO] running `"docker" "start" "-a" "ee024b524d3b332d1401a59c3e40e98a5a0830424b4d3dd10400caa6afa0c9bf"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/ffmpeg_screen_recorder-fad3b7f9513d428c
[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] [stderr]      Running /opt/crater/target/debug/deps/ffmpeg_screen_recorder-4b2954be08fef853
[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] [stderr]    Doc-tests ffmpeg-screen-recorder
[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" "ee024b524d3b332d1401a59c3e40e98a5a0830424b4d3dd10400caa6afa0c9bf"`
[INFO] running `"docker" "rm" "-f" "ee024b524d3b332d1401a59c3e40e98a5a0830424b4d3dd10400caa6afa0c9bf"`
[INFO] [stdout] ee024b524d3b332d1401a59c3e40e98a5a0830424b4d3dd10400caa6afa0c9bf