[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 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-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] e3b41915c5b41914d2bc804265ce6c93324dcb5a274aae88893394393658592e
[INFO] running `"docker" "start" "-a" "e3b41915c5b41914d2bc804265ce6c93324dcb5a274aae88893394393658592e"`
[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 3.18s
[INFO] running `"docker" "inspect" "e3b41915c5b41914d2bc804265ce6c93324dcb5a274aae88893394393658592e"`
[INFO] running `"docker" "rm" "-f" "e3b41915c5b41914d2bc804265ce6c93324dcb5a274aae88893394393658592e"`
[INFO] [stdout] e3b41915c5b41914d2bc804265ce6c93324dcb5a274aae88893394393658592e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] f535423342b1de01bc9ff9784295bbdabdbf491fab4b15d8e1f77d4d1c91c3f8
[INFO] running `"docker" "start" "-a" "f535423342b1de01bc9ff9784295bbdabdbf491fab4b15d8e1f77d4d1c91c3f8"`
[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 0.63s
[INFO] running `"docker" "inspect" "f535423342b1de01bc9ff9784295bbdabdbf491fab4b15d8e1f77d4d1c91c3f8"`
[INFO] running `"docker" "rm" "-f" "f535423342b1de01bc9ff9784295bbdabdbf491fab4b15d8e1f77d4d1c91c3f8"`
[INFO] [stdout] f535423342b1de01bc9ff9784295bbdabdbf491fab4b15d8e1f77d4d1c91c3f8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] ad73f453f535c8885c07518ba63c47edf2afca2f480a7dfa4478c545c1be8bac
[INFO] running `"docker" "start" "-a" "ad73f453f535c8885c07518ba63c47edf2afca2f480a7dfa4478c545c1be8bac"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/i3_focus_last-8d632284cfd4501e
[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" "ad73f453f535c8885c07518ba63c47edf2afca2f480a7dfa4478c545c1be8bac"`
[INFO] running `"docker" "rm" "-f" "ad73f453f535c8885c07518ba63c47edf2afca2f480a7dfa4478c545c1be8bac"`
[INFO] [stdout] ad73f453f535c8885c07518ba63c47edf2afca2f480a7dfa4478c545c1be8bac