[INFO] cloning repository https://github.com/mygnu/rcue
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mygnu/rcue" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmygnu%2Frcue", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmygnu%2Frcue'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b2a42483c023bc651849f9fc95c00ab8e9474e1b
[INFO] checking mygnu/rcue against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmygnu%2Frcue" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mygnu/rcue on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mygnu/rcue
[INFO] finished tweaking git repo https://github.com/mygnu/rcue
[INFO] tweaked toml for git repo https://github.com/mygnu/rcue written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/mygnu/rcue already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a8981521bac289d0b03ea04b08b1cecd8d1c8398865d9188d13ad7e28dd99d97
[INFO] running `Command { std: "docker" "start" "-a" "a8981521bac289d0b03ea04b08b1cecd8d1c8398865d9188d13ad7e28dd99d97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8981521bac289d0b03ea04b08b1cecd8d1c8398865d9188d13ad7e28dd99d97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8981521bac289d0b03ea04b08b1cecd8d1c8398865d9188d13ad7e28dd99d97", kill_on_drop: false }`
[INFO] [stdout] a8981521bac289d0b03ea04b08b1cecd8d1c8398865d9188d13ad7e28dd99d97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] debf9f5c9960426be2bbc9e960eaa95d5c71c41bd5d77254b8f26c4aedf49975
[INFO] running `Command { std: "docker" "start" "-a" "debf9f5c9960426be2bbc9e960eaa95d5c71c41bd5d77254b8f26c4aedf49975", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling rle-decode-fast v1.0.1
[INFO] [stderr]    Compiling adler32 v1.1.0
[INFO] [stderr]    Compiling take_mut v0.2.2
[INFO] [stderr]    Compiling libflate v0.1.27
[INFO] [stderr]    Compiling xattr v0.2.2
[INFO] [stderr]    Compiling filetime v0.2.10
[INFO] [stderr]    Compiling tar v0.4.29
[INFO] [stderr]    Compiling libusb1-sys v0.3.7
[INFO] [stderr]     Checking rusb v0.6.2
[INFO] [stderr]     Checking rcue v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `print_device_info`
[INFO] [stdout]   --> src/main.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn print_device_info<T: UsbContext>(handle: &mut DeviceHandle<T>) -> Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_device_info`
[INFO] [stdout]   --> src/main.rs:81:4
[INFO] [stdout]    |
[INFO] [stdout] 81 | fn print_device_info<T: UsbContext>(handle: &mut DeviceHandle<T>) -> Result<()> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.88s
[INFO] running `Command { std: "docker" "inspect" "debf9f5c9960426be2bbc9e960eaa95d5c71c41bd5d77254b8f26c4aedf49975", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "debf9f5c9960426be2bbc9e960eaa95d5c71c41bd5d77254b8f26c4aedf49975", kill_on_drop: false }`
[INFO] [stdout] debf9f5c9960426be2bbc9e960eaa95d5c71c41bd5d77254b8f26c4aedf49975