[INFO] cloning repository https://github.com/RockyTV/rust-nbr6023
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/RockyTV/rust-nbr6023" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRockyTV%2Frust-nbr6023", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRockyTV%2Frust-nbr6023'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9125571df28e8e940e03fc2f1d05482af0937e36
[INFO] testing RockyTV/rust-nbr6023 against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRockyTV%2Frust-nbr6023" "/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/RockyTV/rust-nbr6023 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/RockyTV/rust-nbr6023
[INFO] finished tweaking git repo https://github.com/RockyTV/rust-nbr6023
[INFO] tweaked toml for git repo https://github.com/RockyTV/rust-nbr6023 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/RockyTV/rust-nbr6023 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-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" "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] d9938d304e6f3f56ca4ab05d04d334152c4db4721d3fa177936c18c9804d0b10
[INFO] running `Command { std: "docker" "start" "-a" "d9938d304e6f3f56ca4ab05d04d334152c4db4721d3fa177936c18c9804d0b10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9938d304e6f3f56ca4ab05d04d334152c4db4721d3fa177936c18c9804d0b10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9938d304e6f3f56ca4ab05d04d334152c4db4721d3fa177936c18c9804d0b10", kill_on_drop: false }`
[INFO] [stdout] d9938d304e6f3f56ca4ab05d04d334152c4db4721d3fa177936c18c9804d0b10
[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" "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] f3846426655d0b8574d4f9155e91a850aca13660216f41cbb6daee59d0fd53ee
[INFO] running `Command { std: "docker" "start" "-a" "f3846426655d0b8574d4f9155e91a850aca13660216f41cbb6daee59d0fd53ee", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-nbr6023 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `title`
[INFO] [stdout]   --> src/main.rs:10:37
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn generate_reference(author: &str, title: &str, year: &str, link: &str) -> String {
[INFO] [stdout]    |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_title`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `year`
[INFO] [stdout]   --> src/main.rs:10:50
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn generate_reference(author: &str, title: &str, year: &str, link: &str) -> String {
[INFO] [stdout]    |                                                  ^^^^ help: if this is intentional, prefix it with an underscore: `_year`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `link`
[INFO] [stdout]   --> src/main.rs:10:62
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn generate_reference(author: &str, title: &str, year: &str, link: &str) -> String {
[INFO] [stdout]    |                                                              ^^^^ help: if this is intentional, prefix it with an underscore: `_link`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut author_surname: &str = match author_parts.pop() {
[INFO] [stdout]    |         ----^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `Command { std: "docker" "inspect" "f3846426655d0b8574d4f9155e91a850aca13660216f41cbb6daee59d0fd53ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3846426655d0b8574d4f9155e91a850aca13660216f41cbb6daee59d0fd53ee", kill_on_drop: false }`
[INFO] [stdout] f3846426655d0b8574d4f9155e91a850aca13660216f41cbb6daee59d0fd53ee
[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" "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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2d49d1254371fd1fb3c4c335459acb6c8f43f5889fc2e76476acf9f4ef34598a
[INFO] running `Command { std: "docker" "start" "-a" "2d49d1254371fd1fb3c4c335459acb6c8f43f5889fc2e76476acf9f4ef34598a", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-nbr6023 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `title`
[INFO] [stdout]   --> src/main.rs:10:37
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn generate_reference(author: &str, title: &str, year: &str, link: &str) -> String {
[INFO] [stdout]    |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_title`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `year`
[INFO] [stdout]   --> src/main.rs:10:50
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn generate_reference(author: &str, title: &str, year: &str, link: &str) -> String {
[INFO] [stdout]    |                                                  ^^^^ help: if this is intentional, prefix it with an underscore: `_year`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `link`
[INFO] [stdout]   --> src/main.rs:10:62
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn generate_reference(author: &str, title: &str, year: &str, link: &str) -> String {
[INFO] [stdout]    |                                                              ^^^^ help: if this is intentional, prefix it with an underscore: `_link`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut author_surname: &str = match author_parts.pop() {
[INFO] [stdout]    |         ----^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "2d49d1254371fd1fb3c4c335459acb6c8f43f5889fc2e76476acf9f4ef34598a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d49d1254371fd1fb3c4c335459acb6c8f43f5889fc2e76476acf9f4ef34598a", kill_on_drop: false }`
[INFO] [stdout] 2d49d1254371fd1fb3c4c335459acb6c8f43f5889fc2e76476acf9f4ef34598a
[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" "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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] dd50d4cdacc42134d80c992180a4f57279e62b983cde79eed4969908354c21e6
[INFO] running `Command { std: "docker" "start" "-a" "dd50d4cdacc42134d80c992180a4f57279e62b983cde79eed4969908354c21e6", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `title`
[INFO] [stderr]   --> src/main.rs:10:37
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn generate_reference(author: &str, title: &str, year: &str, link: &str) -> String {
[INFO] [stderr]    |                                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_title`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `year`
[INFO] [stderr]   --> src/main.rs:10:50
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn generate_reference(author: &str, title: &str, year: &str, link: &str) -> String {
[INFO] [stderr]    |                                                  ^^^^ help: if this is intentional, prefix it with an underscore: `_year`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `link`
[INFO] [stderr]   --> src/main.rs:10:62
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn generate_reference(author: &str, title: &str, year: &str, link: &str) -> String {
[INFO] [stderr]    |                                                              ^^^^ help: if this is intentional, prefix it with an underscore: `_link`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let mut author_surname: &str = match author_parts.pop() {
[INFO] [stderr]    |         ----^^^^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_nbr6023-ff6cd702e5baade5
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "dd50d4cdacc42134d80c992180a4f57279e62b983cde79eed4969908354c21e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd50d4cdacc42134d80c992180a4f57279e62b983cde79eed4969908354c21e6", kill_on_drop: false }`
[INFO] [stdout] dd50d4cdacc42134d80c992180a4f57279e62b983cde79eed4969908354c21e6