[INFO] cloning repository https://github.com/nelsonatgithub/palindrome
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nelsonatgithub/palindrome" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnelsonatgithub%2Fpalindrome", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnelsonatgithub%2Fpalindrome'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 093e4af2e6498e1f12f5be69bcb5c5571b7688cb
[INFO] testing nelsonatgithub/palindrome against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnelsonatgithub%2Fpalindrome" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nelsonatgithub/palindrome on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nelsonatgithub/palindrome
[INFO] finished tweaking git repo https://github.com/nelsonatgithub/palindrome
[INFO] tweaked toml for git repo https://github.com/nelsonatgithub/palindrome written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/nelsonatgithub/palindrome already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0999276cb394280e7c9154d21f3105fd5b4ea083255fb5feb872913fd50b1512
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0999276cb394280e7c9154d21f3105fd5b4ea083255fb5feb872913fd50b1512", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0999276cb394280e7c9154d21f3105fd5b4ea083255fb5feb872913fd50b1512", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0999276cb394280e7c9154d21f3105fd5b4ea083255fb5feb872913fd50b1512", kill_on_drop: false }`
[INFO] [stdout] 0999276cb394280e7c9154d21f3105fd5b4ea083255fb5feb872913fd50b1512
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--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] f636f703c4def77695ae00475225d96d50d28b57dd6d36c467a99c337032cf8f
[INFO] running `Command { std: "docker" "start" "-a" "f636f703c4def77695ae00475225d96d50d28b57dd6d36c467a99c337032cf8f", kill_on_drop: false }`
[INFO] [stderr]    Compiling PALIN v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `is_palindrome`
[INFO] [stdout]   --> src/main.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn is_palindrome(&mut self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `PALIN` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `palin`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `Command { std: "docker" "inspect" "f636f703c4def77695ae00475225d96d50d28b57dd6d36c467a99c337032cf8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f636f703c4def77695ae00475225d96d50d28b57dd6d36c467a99c337032cf8f", kill_on_drop: false }`
[INFO] [stdout] f636f703c4def77695ae00475225d96d50d28b57dd6d36c467a99c337032cf8f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cee5642737289428ba3f4a6d242a77fef83c6cb3989724679bfbfadda4d3e804
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "cee5642737289428ba3f4a6d242a77fef83c6cb3989724679bfbfadda4d3e804", kill_on_drop: false }`
[INFO] [stderr]    Compiling PALIN v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: crate `PALIN` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `palin`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.25s
[INFO] running `Command { std: "docker" "inspect" "cee5642737289428ba3f4a6d242a77fef83c6cb3989724679bfbfadda4d3e804", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cee5642737289428ba3f4a6d242a77fef83c6cb3989724679bfbfadda4d3e804", kill_on_drop: false }`
[INFO] [stdout] cee5642737289428ba3f4a6d242a77fef83c6cb3989724679bfbfadda4d3e804
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1a3c996a23fc3ac10d4cf5ad9d54a7b85b7301e8ba8518aec98f4942a4e541b7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1a3c996a23fc3ac10d4cf5ad9d54a7b85b7301e8ba8518aec98f4942a4e541b7", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: crate `PALIN` should have a snake case name
[INFO] [stdout] running 10 tests
[INFO] [stderr]   |
[INFO] [stdout] test foo ... ok
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] test palindrome_digit ... ok
[INFO] [stderr]   = help: convert the identifier to snake case: `palin`
[INFO] [stdout] test palindrome_break_index ... ok
[INFO] [stderr] 
[INFO] [stdout] test palindrome_length ... ok
[INFO] [stderr] warning: `PALIN` (bin "PALIN" test) generated 1 warning
[INFO] [stdout] test palindrome_mirror_after_2_digit ... ok
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] test palindrome_is_palindrome ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/PALIN-05e1f95a4c66a5f9)
[INFO] [stdout] test palindrome_mirror_after_3_digit ... ok
[INFO] [stdout] test palindrome_next ... ok
[INFO] [stdout] test palindrome_safe_index ... ok
[INFO] [stdout] test palindrome_update_digit ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1a3c996a23fc3ac10d4cf5ad9d54a7b85b7301e8ba8518aec98f4942a4e541b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a3c996a23fc3ac10d4cf5ad9d54a7b85b7301e8ba8518aec98f4942a4e541b7", kill_on_drop: false }`
[INFO] [stdout] 1a3c996a23fc3ac10d4cf5ad9d54a7b85b7301e8ba8518aec98f4942a4e541b7