[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#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRockyTV%2Frust-nbr6023" "/workspace/builds/worker-88/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-88/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/RockyTV/rust-nbr6023 on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-88/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" "+62efba8a050c64249dab942951bb28f710208bc8" "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-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0be89c12cd7b5804d8917d653967b79f3969a8d34bee6a0316e0503aa2157d1a
[INFO] running `Command { std: "docker" "start" "-a" "0be89c12cd7b5804d8917d653967b79f3969a8d34bee6a0316e0503aa2157d1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0be89c12cd7b5804d8917d653967b79f3969a8d34bee6a0316e0503aa2157d1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0be89c12cd7b5804d8917d653967b79f3969a8d34bee6a0316e0503aa2157d1a", kill_on_drop: false }`
[INFO] [stdout] 0be89c12cd7b5804d8917d653967b79f3969a8d34bee6a0316e0503aa2157d1a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bd37872917426e5905137c564d43eeca2f7b8eb8acb1ef3dcc108f424190619c
[INFO] running `Command { std: "docker" "start" "-a" "bd37872917426e5905137c564d43eeca2f7b8eb8acb1ef3dcc108f424190619c", 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 2.28s
[INFO] running `Command { std: "docker" "inspect" "bd37872917426e5905137c564d43eeca2f7b8eb8acb1ef3dcc108f424190619c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd37872917426e5905137c564d43eeca2f7b8eb8acb1ef3dcc108f424190619c", kill_on_drop: false }`
[INFO] [stdout] bd37872917426e5905137c564d43eeca2f7b8eb8acb1ef3dcc108f424190619c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3fe797ba3f439344191c345030695605b6a4e19cdd8f04866a7f4157507f7684
[INFO] running `Command { std: "docker" "start" "-a" "3fe797ba3f439344191c345030695605b6a4e19cdd8f04866a7f4157507f7684", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.51s
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3fe797ba3f439344191c345030695605b6a4e19cdd8f04866a7f4157507f7684", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fe797ba3f439344191c345030695605b6a4e19cdd8f04866a7f4157507f7684", kill_on_drop: false }`
[INFO] [stdout] 3fe797ba3f439344191c345030695605b6a4e19cdd8f04866a7f4157507f7684
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 30eff1436f01ea0f13c40caf75671e09fff062ff3385c1b79b7a2cfaf2585321
[INFO] running `Command { std: "docker" "start" "-a" "30eff1436f01ea0f13c40caf75671e09fff062ff3385c1b79b7a2cfaf2585321", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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: `rust-nbr6023` (bin "rust-nbr6023" test) generated 4 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.71s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_nbr6023-7e48288356643b1a)
[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" "30eff1436f01ea0f13c40caf75671e09fff062ff3385c1b79b7a2cfaf2585321", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30eff1436f01ea0f13c40caf75671e09fff062ff3385c1b79b7a2cfaf2585321", kill_on_drop: false }`
[INFO] [stdout] 30eff1436f01ea0f13c40caf75671e09fff062ff3385c1b79b7a2cfaf2585321