[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 try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnelsonatgithub%2Fpalindrome" "/workspace/builds/worker-107/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-107/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nelsonatgithub/palindrome on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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-107/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" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 44646a5ab9371079929a12a3d341f1a6354d49f76a9da1c662cb62b41777c053
[INFO] running `Command { std: "docker" "start" "-a" "44646a5ab9371079929a12a3d341f1a6354d49f76a9da1c662cb62b41777c053", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "44646a5ab9371079929a12a3d341f1a6354d49f76a9da1c662cb62b41777c053", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44646a5ab9371079929a12a3d341f1a6354d49f76a9da1c662cb62b41777c053", kill_on_drop: false }`
[INFO] [stdout] 44646a5ab9371079929a12a3d341f1a6354d49f76a9da1c662cb62b41777c053
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] faf4c9f1eec42db5bcc4025a3d21c8a39ade24dcbb33eb03f63fffae9291e5df
[INFO] running `Command { std: "docker" "start" "-a" "faf4c9f1eec42db5bcc4025a3d21c8a39ade24dcbb33eb03f63fffae9291e5df", 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 1.10s
[INFO] running `Command { std: "docker" "inspect" "faf4c9f1eec42db5bcc4025a3d21c8a39ade24dcbb33eb03f63fffae9291e5df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "faf4c9f1eec42db5bcc4025a3d21c8a39ade24dcbb33eb03f63fffae9291e5df", kill_on_drop: false }`
[INFO] [stdout] faf4c9f1eec42db5bcc4025a3d21c8a39ade24dcbb33eb03f63fffae9291e5df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 913d9d4bdd71fa3f70b6aa2dd73d9c32739f2b4c1b5b6a3f8dd2ff20e357c590
[INFO] running `Command { std: "docker" "start" "-a" "913d9d4bdd71fa3f70b6aa2dd73d9c32739f2b4c1b5b6a3f8dd2ff20e357c590", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 0.53s
[INFO] running `Command { std: "docker" "inspect" "913d9d4bdd71fa3f70b6aa2dd73d9c32739f2b4c1b5b6a3f8dd2ff20e357c590", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "913d9d4bdd71fa3f70b6aa2dd73d9c32739f2b4c1b5b6a3f8dd2ff20e357c590", kill_on_drop: false }`
[INFO] [stdout] 913d9d4bdd71fa3f70b6aa2dd73d9c32739f2b4c1b5b6a3f8dd2ff20e357c590
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e31bd71aee210eb2a6edc416603cde2cf8e99d0f151c131484dceeff862f6e88
[INFO] running `Command { std: "docker" "start" "-a" "e31bd71aee210eb2a6edc416603cde2cf8e99d0f151c131484dceeff862f6e88", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: crate `PALIN` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `palin`
[INFO] [stderr] 
[INFO] [stderr] warning: `PALIN` (bin "PALIN" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.34s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/PALIN-91eb4a07da2fd1b3)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test foo ... ok
[INFO] [stdout] test palindrome_break_index ... ok
[INFO] [stdout] test palindrome_digit ... ok
[INFO] [stdout] test palindrome_length ... ok
[INFO] [stdout] test palindrome_is_palindrome ... ok
[INFO] [stdout] test palindrome_mirror_after_2_digit ... ok
[INFO] [stdout] test palindrome_mirror_after_3_digit ... ok
[INFO] [stdout] test palindrome_safe_index ... ok
[INFO] [stdout] test palindrome_next ... 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 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e31bd71aee210eb2a6edc416603cde2cf8e99d0f151c131484dceeff862f6e88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e31bd71aee210eb2a6edc416603cde2cf8e99d0f151c131484dceeff862f6e88", kill_on_drop: false }`
[INFO] [stdout] e31bd71aee210eb2a6edc416603cde2cf8e99d0f151c131484dceeff862f6e88