[INFO] crate i3-focus-last 0.2.2 is already in cache
[INFO] extracting crate i3-focus-last 0.2.2 into work/ex/beta-1.38-1/sources/1.37.0/reg/i3-focus-last/0.2.2
[INFO] extracting crate i3-focus-last 0.2.2 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/i3-focus-last/0.2.2
[INFO] validating manifest of i3-focus-last-0.2.2 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 i3-focus-last-0.2.2 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 i3-focus-last-0.2.2
[INFO] finished frobbing i3-focus-last-0.2.2
[INFO] frobbed toml for i3-focus-last-0.2.2 written to work/ex/beta-1.38-1/sources/1.37.0/reg/i3-focus-last/0.2.2/Cargo.toml
[INFO] started frobbing i3-focus-last-0.2.2
[INFO] finished frobbing i3-focus-last-0.2.2
[INFO] frobbed toml for i3-focus-last-0.2.2 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/i3-focus-last/0.2.2/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 i3-focus-last-0.2.2 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/i3-focus-last/0.2.2:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 02519ea4035220d98c52328bf6a65037859400e5dced49d489aa4c68f6bb1ddf
[INFO] running `"docker" "start" "-a" "02519ea4035220d98c52328bf6a65037859400e5dced49d489aa4c68f6bb1ddf"`
[INFO] [stderr]    Compiling i3ipc v0.9.0
[INFO] [stderr]    Compiling i3-focus-last v0.2.2 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:36:67
[INFO] [stderr]    |
[INFO] [stderr] 36 | fn focus_nth(windows: &VecDeque<i64>, n: usize) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                                   ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.41s
[INFO] running `"docker" "inspect" "02519ea4035220d98c52328bf6a65037859400e5dced49d489aa4c68f6bb1ddf"`
[INFO] running `"docker" "rm" "-f" "02519ea4035220d98c52328bf6a65037859400e5dced49d489aa4c68f6bb1ddf"`
[INFO] [stdout] 02519ea4035220d98c52328bf6a65037859400e5dced49d489aa4c68f6bb1ddf
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/i3-focus-last/0.2.2:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] c4259a05370a8931c18e1182defe690680a34c131836a5ef8564e079aa61c7ce
[INFO] running `"docker" "start" "-a" "c4259a05370a8931c18e1182defe690680a34c131836a5ef8564e079aa61c7ce"`
[INFO] [stderr]    Compiling i3-focus-last v0.2.2 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:36:67
[INFO] [stderr]    |
[INFO] [stderr] 36 | fn focus_nth(windows: &VecDeque<i64>, n: usize) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                                   ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `"docker" "inspect" "c4259a05370a8931c18e1182defe690680a34c131836a5ef8564e079aa61c7ce"`
[INFO] running `"docker" "rm" "-f" "c4259a05370a8931c18e1182defe690680a34c131836a5ef8564e079aa61c7ce"`
[INFO] [stdout] c4259a05370a8931c18e1182defe690680a34c131836a5ef8564e079aa61c7ce
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/i3-focus-last/0.2.2:/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] ab602aece2e867e8c6a3333ba3dc53e3ae67ffedcce4b94b1caf598595114ce7
[INFO] running `"docker" "start" "-a" "ab602aece2e867e8c6a3333ba3dc53e3ae67ffedcce4b94b1caf598595114ce7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/i3_focus_last-c2c0985e3940e837
[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" "ab602aece2e867e8c6a3333ba3dc53e3ae67ffedcce4b94b1caf598595114ce7"`
[INFO] running `"docker" "rm" "-f" "ab602aece2e867e8c6a3333ba3dc53e3ae67ffedcce4b94b1caf598595114ce7"`
[INFO] [stdout] ab602aece2e867e8c6a3333ba3dc53e3ae67ffedcce4b94b1caf598595114ce7