[INFO] cloning repository https://github.com/GabrielBueno/calcrr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/GabrielBueno/calcrr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGabrielBueno%2Fcalcrr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGabrielBueno%2Fcalcrr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 411e3daf96559bba698c26e1b53be217c6c1324f
[INFO] testing GabrielBueno/calcrr against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGabrielBueno%2Fcalcrr" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/GabrielBueno/calcrr on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/GabrielBueno/calcrr
[INFO] finished tweaking git repo https://github.com/GabrielBueno/calcrr
[INFO] tweaked toml for git repo https://github.com/GabrielBueno/calcrr written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/GabrielBueno/calcrr already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "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] e16942ac1b2d2c52583ae34a257bba04ccf5f6560f185995cb0ee5922f085e18
[INFO] running `Command { std: "docker" "start" "-a" "e16942ac1b2d2c52583ae34a257bba04ccf5f6560f185995cb0ee5922f085e18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e16942ac1b2d2c52583ae34a257bba04ccf5f6560f185995cb0ee5922f085e18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e16942ac1b2d2c52583ae34a257bba04ccf5f6560f185995cb0ee5922f085e18", kill_on_drop: false }`
[INFO] [stdout] e16942ac1b2d2c52583ae34a257bba04ccf5f6560f185995cb0ee5922f085e18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "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] ad199002f910bc090bc349bae8a3568f12ed585709aedab7bc58ee57ca6e1f0e
[INFO] running `Command { std: "docker" "start" "-a" "ad199002f910bc090bc349bae8a3568f12ed585709aedab7bc58ee57ca6e1f0e", kill_on_drop: false }`
[INFO] [stderr]    Compiling calcrr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `head`
[INFO] [stdout]   --> src/lexer.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn head(self: &TokenCollection) -> Option<&Token> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `len`
[INFO] [stdout]   --> src/lexer.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn len(self: &TokenCollection) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `Command { std: "docker" "inspect" "ad199002f910bc090bc349bae8a3568f12ed585709aedab7bc58ee57ca6e1f0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad199002f910bc090bc349bae8a3568f12ed585709aedab7bc58ee57ca6e1f0e", kill_on_drop: false }`
[INFO] [stdout] ad199002f910bc090bc349bae8a3568f12ed585709aedab7bc58ee57ca6e1f0e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6be2f3b47250c56cfc8c7cc4e3374c9c022d16a610422ee8355414fcd9c25f78
[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" "6be2f3b47250c56cfc8c7cc4e3374c9c022d16a610422ee8355414fcd9c25f78", kill_on_drop: false }`
[INFO] [stderr]    Compiling calcrr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `head`
[INFO] [stdout]   --> src/lexer.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn head(self: &TokenCollection) -> Option<&Token> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `len`
[INFO] [stdout]   --> src/lexer.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn len(self: &TokenCollection) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "6be2f3b47250c56cfc8c7cc4e3374c9c022d16a610422ee8355414fcd9c25f78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6be2f3b47250c56cfc8c7cc4e3374c9c022d16a610422ee8355414fcd9c25f78", kill_on_drop: false }`
[INFO] [stdout] 6be2f3b47250c56cfc8c7cc4e3374c9c022d16a610422ee8355414fcd9c25f78
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9679483c30620666a221b7421748c5b7b7c4e25831faa0f4020744f5a5813db2
[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" "9679483c30620666a221b7421748c5b7b7c4e25831faa0f4020744f5a5813db2", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: associated function is never used: `head`
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/lexer.rs:20:12
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr] 20 |     pub fn head(self: &TokenCollection) -> Option<&Token> {
[INFO] [stdout] 
[INFO] [stderr]    |            ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `len`
[INFO] [stderr]   --> src/lexer.rs:31:12
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn len(self: &TokenCollection) -> usize {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/calcrr-80db5f4b06fce0f6
[INFO] running `Command { std: "docker" "inspect" "9679483c30620666a221b7421748c5b7b7c4e25831faa0f4020744f5a5813db2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9679483c30620666a221b7421748c5b7b7c4e25831faa0f4020744f5a5813db2", kill_on_drop: false }`
[INFO] [stdout] 9679483c30620666a221b7421748c5b7b7c4e25831faa0f4020744f5a5813db2