[INFO] updating cached repository https://github.com/RockyTV/rust-nbr6023
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9125571df28e8e940e03fc2f1d05482af0937e36
[INFO] testing RockyTV/rust-nbr6023 against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FRockyTV%2Frust-nbr6023" "work/builds/worker-3/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/RockyTV/rust-nbr6023 on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[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 work/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/RockyTV/rust-nbr6023 already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] c883a385c538f2e9dad195d7f4464ffebe7b47461510f4477a98767a0191db68
[INFO] running `"docker" "start" "-a" "c883a385c538f2e9dad195d7f4464ffebe7b47461510f4477a98767a0191db68"`
[INFO] [stderr]    Compiling rust-nbr6023 v0.1.0 (/opt/rustwide/workdir)
[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: consider prefixing 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: consider prefixing 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: consider prefixing 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]     Finished dev [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `"docker" "inspect" "c883a385c538f2e9dad195d7f4464ffebe7b47461510f4477a98767a0191db68"`
[INFO] running `"docker" "rm" "-f" "c883a385c538f2e9dad195d7f4464ffebe7b47461510f4477a98767a0191db68"`
[INFO] [stdout] c883a385c538f2e9dad195d7f4464ffebe7b47461510f4477a98767a0191db68
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] a1a9ec57333b63670184972638f4846030b57b0393208dafdd645b80fb71cef5
[INFO] running `"docker" "start" "-a" "a1a9ec57333b63670184972638f4846030b57b0393208dafdd645b80fb71cef5"`
[INFO] [stderr]    Compiling rust-nbr6023 v0.1.0 (/opt/rustwide/workdir)
[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: consider prefixing 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: consider prefixing 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: consider prefixing 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]     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `"docker" "inspect" "a1a9ec57333b63670184972638f4846030b57b0393208dafdd645b80fb71cef5"`
[INFO] running `"docker" "rm" "-f" "a1a9ec57333b63670184972638f4846030b57b0393208dafdd645b80fb71cef5"`
[INFO] [stdout] a1a9ec57333b63670184972638f4846030b57b0393208dafdd645b80fb71cef5
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] 7f16f5efe4a25f2b0c802712d833b7593e2557860989f216cc7f931da8b899a7
[INFO] running `"docker" "start" "-a" "7f16f5efe4a25f2b0c802712d833b7593e2557860989f216cc7f931da8b899a7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_nbr6023-fbf9e797e7ce198a
[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 `"docker" "inspect" "7f16f5efe4a25f2b0c802712d833b7593e2557860989f216cc7f931da8b899a7"`
[INFO] running `"docker" "rm" "-f" "7f16f5efe4a25f2b0c802712d833b7593e2557860989f216cc7f931da8b899a7"`
[INFO] [stdout] 7f16f5efe4a25f2b0c802712d833b7593e2557860989f216cc7f931da8b899a7