[INFO] cloning repository lbonn/i3-focus-last
[INFO] running `"git" "clone" "--bare" "git://github.com/lbonn/i3-focus-last.git" "work/cache/sources/gh/lbonn/i3-focus-last"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/lbonn/i3-focus-last'...
[INFO] running `"git" "clone" "work/cache/sources/gh/lbonn/i3-focus-last" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/lbonn/i3-focus-last"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/lbonn/i3-focus-last'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/lbonn/i3-focus-last" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/lbonn/i3-focus-last"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/lbonn/i3-focus-last'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 43bdfc190ac9b283e8e8a3b37ad13a4251f638c3
[INFO] sha for GitHub repo lbonn/i3-focus-last: 43bdfc190ac9b283e8e8a3b37ad13a4251f638c3
[INFO] validating manifest of lbonn/i3-focus-last on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of lbonn/i3-focus-last on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing lbonn/i3-focus-last
[INFO] finished frobbing lbonn/i3-focus-last
[INFO] frobbed toml for lbonn/i3-focus-last written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/lbonn/i3-focus-last/Cargo.toml
[INFO] started frobbing lbonn/i3-focus-last
[INFO] finished frobbing lbonn/i3-focus-last
[INFO] frobbed toml for lbonn/i3-focus-last written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/lbonn/i3-focus-last/Cargo.toml
[INFO] crate lbonn/i3-focus-last already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking lbonn/i3-focus-last against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-0/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/lbonn/i3-focus-last:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 6a8d505dc7404dbef5bcd17c4c2a7488defaff2100311add2db24cfffd824798
[INFO] running `"docker" "start" "-a" "6a8d505dc7404dbef5bcd17c4c2a7488defaff2100311add2db24cfffd824798"`
[INFO] [stderr]    Compiling syn v0.15.20
[INFO] [stderr]     Checking rmp v0.8.7
[INFO] [stderr]     Checking i3ipc v0.9.0
[INFO] [stderr]     Checking rmp-serde v0.13.7
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]     Checking 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] 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 17.70s
[INFO] running `"docker" "inspect" "6a8d505dc7404dbef5bcd17c4c2a7488defaff2100311add2db24cfffd824798"`
[INFO] running `"docker" "rm" "-f" "6a8d505dc7404dbef5bcd17c4c2a7488defaff2100311add2db24cfffd824798"`
[INFO] [stdout] 6a8d505dc7404dbef5bcd17c4c2a7488defaff2100311add2db24cfffd824798