[INFO] cloning repository https://github.com/sts10/prefix-safety-checker
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sts10/prefix-safety-checker" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsts10%2Fprefix-safety-checker", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsts10%2Fprefix-safety-checker'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6fe9c20f866fb6f0cb25298e823e4eb2f4a99c1a
[INFO] testing sts10/prefix-safety-checker against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsts10%2Fprefix-safety-checker" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sts10/prefix-safety-checker on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sts10/prefix-safety-checker
[INFO] finished tweaking git repo https://github.com/sts10/prefix-safety-checker
[INFO] tweaked toml for git repo https://github.com/sts10/prefix-safety-checker written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/sts10/prefix-safety-checker already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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] fa3c9af79b3309c6e80922937660670f03ad348667d0fc2f1c96bb2407a9e9ab
[INFO] running `Command { std: "docker" "start" "-a" "fa3c9af79b3309c6e80922937660670f03ad348667d0fc2f1c96bb2407a9e9ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa3c9af79b3309c6e80922937660670f03ad348667d0fc2f1c96bb2407a9e9ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa3c9af79b3309c6e80922937660670f03ad348667d0fc2f1c96bb2407a9e9ab", kill_on_drop: false }`
[INFO] [stdout] fa3c9af79b3309c6e80922937660670f03ad348667d0fc2f1c96bb2407a9e9ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2f03d220cc9d60bdae2e549a6c49e86e4b89a6a2d495e831ee408ea4e3bb65e7
[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" "2f03d220cc9d60bdae2e549a6c49e86e4b89a6a2d495e831ee408ea4e3bb65e7", kill_on_drop: false }`
[INFO] [stderr]    Compiling sum-word-checker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/main.rs:62:79
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn split_and_search(words: Vec<String>, word_list_to_check_filename: &str) -> (Vec<String>) {
[INFO] [stdout]    |                                                                               ^           ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 62 - fn split_and_search(words: Vec<String>, word_list_to_check_filename: &str) -> (Vec<String>) {
[INFO] [stdout] 62 + fn split_and_search(words: Vec<String>, word_list_to_check_filename: &str) -> Vec<String> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.40s
[INFO] running `Command { std: "docker" "inspect" "2f03d220cc9d60bdae2e549a6c49e86e4b89a6a2d495e831ee408ea4e3bb65e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f03d220cc9d60bdae2e549a6c49e86e4b89a6a2d495e831ee408ea4e3bb65e7", kill_on_drop: false }`
[INFO] [stdout] 2f03d220cc9d60bdae2e549a6c49e86e4b89a6a2d495e831ee408ea4e3bb65e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c094bbf5498523a7e07075ff7d70558fe04c7499d60aff91ba64613343b85c6e
[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" "c094bbf5498523a7e07075ff7d70558fe04c7499d60aff91ba64613343b85c6e", kill_on_drop: false }`
[INFO] [stderr]    Compiling sum-word-checker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/main.rs:62:79
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn split_and_search(words: Vec<String>, word_list_to_check_filename: &str) -> (Vec<String>) {
[INFO] [stdout]    |                                                                               ^           ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 62 - fn split_and_search(words: Vec<String>, word_list_to_check_filename: &str) -> (Vec<String>) {
[INFO] [stdout] 62 + fn split_and_search(words: Vec<String>, word_list_to_check_filename: &str) -> Vec<String> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.71s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c094bbf5498523a7e07075ff7d70558fe04c7499d60aff91ba64613343b85c6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c094bbf5498523a7e07075ff7d70558fe04c7499d60aff91ba64613343b85c6e", kill_on_drop: false }`
[INFO] [stdout] c094bbf5498523a7e07075ff7d70558fe04c7499d60aff91ba64613343b85c6e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8856ae6559d4fde28fb8173150672be79b73a25758500957e1b915445343e0ba
[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" "8856ae6559d4fde28fb8173150672be79b73a25758500957e1b915445343e0ba", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/main.rs:62:79
[INFO] [stderr]    |
[INFO] [stderr] 62 | fn split_and_search(words: Vec<String>, word_list_to_check_filename: &str) -> (Vec<String>) {
[INFO] [stderr]    |                                                                               ^           ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 62 - fn split_and_search(words: Vec<String>, word_list_to_check_filename: &str) -> (Vec<String>) {
[INFO] [stderr] 62 + fn split_and_search(words: Vec<String>, word_list_to_check_filename: &str) -> Vec<String> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: `sum-word-checker` (bin "sum-word-checker" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/sum_word_checker-22cd21ad5d3ad845)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8856ae6559d4fde28fb8173150672be79b73a25758500957e1b915445343e0ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8856ae6559d4fde28fb8173150672be79b73a25758500957e1b915445343e0ba", kill_on_drop: false }`
[INFO] [stdout] 8856ae6559d4fde28fb8173150672be79b73a25758500957e1b915445343e0ba