[INFO] cloning repository https://github.com/mattjk00/lyric-graph-analyzer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mattjk00/lyric-graph-analyzer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmattjk00%2Flyric-graph-analyzer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmattjk00%2Flyric-graph-analyzer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e5c34fe7529f2ecd5a7096013dae9d7086a9b76c
[INFO] testing mattjk00/lyric-graph-analyzer against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmattjk00%2Flyric-graph-analyzer" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mattjk00/lyric-graph-analyzer on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mattjk00/lyric-graph-analyzer
[INFO] finished tweaking git repo https://github.com/mattjk00/lyric-graph-analyzer
[INFO] tweaked toml for git repo https://github.com/mattjk00/lyric-graph-analyzer written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/mattjk00/lyric-graph-analyzer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.70
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 727f75c259425ca1fc9d917e5c8e1155433741c23baf621899452ca240422917
[INFO] running `Command { std: "docker" "start" "-a" "727f75c259425ca1fc9d917e5c8e1155433741c23baf621899452ca240422917", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "727f75c259425ca1fc9d917e5c8e1155433741c23baf621899452ca240422917", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "727f75c259425ca1fc9d917e5c8e1155433741c23baf621899452ca240422917", kill_on_drop: false }`
[INFO] [stdout] 727f75c259425ca1fc9d917e5c8e1155433741c23baf621899452ca240422917
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a0af1855a4a93927e5c2bb2ac3c91f59f0e2d77b16968b5cf746372c82b3547d
[INFO] running `Command { std: "docker" "start" "-a" "a0af1855a4a93927e5c2bb2ac3c91f59f0e2d77b16968b5cf746372c82b3547d", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling regex v1.3.7
[INFO] [stderr]    Compiling lyric-graph v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:47:18
[INFO] [stdout]    |
[INFO] [stdout] 47 |             Some(i) => {
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/main.rs:108:17
[INFO] [stdout]     |
[INFO] [stdout] 108 |             for i in 0..length - 1 {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:162:9
[INFO] [stdout]     |
[INFO] [stdout] 162 |     let mut cleaned = text.split_whitespace().collect::<Vec<_>>();
[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: associated function is never used: `add_vertices`
[INFO] [stdout]   --> src/main.rs:60:8
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn add_vertices(&mut self, vs:Vec<&'a LVert>) {
[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: `print`
[INFO] [stdout]    --> src/main.rs:137:8
[INFO] [stdout]     |
[INFO] [stdout] 137 |     fn print(&mut self) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.61s
[INFO] running `Command { std: "docker" "inspect" "a0af1855a4a93927e5c2bb2ac3c91f59f0e2d77b16968b5cf746372c82b3547d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0af1855a4a93927e5c2bb2ac3c91f59f0e2d77b16968b5cf746372c82b3547d", kill_on_drop: false }`
[INFO] [stdout] a0af1855a4a93927e5c2bb2ac3c91f59f0e2d77b16968b5cf746372c82b3547d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e0635270df03062e41e1f305ec5394d3bd86c9dc49905955c3d452643f400b4
[INFO] running `Command { std: "docker" "start" "-a" "1e0635270df03062e41e1f305ec5394d3bd86c9dc49905955c3d452643f400b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling lyric-graph v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:47:18
[INFO] [stdout]    |
[INFO] [stdout] 47 |             Some(i) => {
[INFO] [stdout]    |                  ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/main.rs:108:17
[INFO] [stdout]     |
[INFO] [stdout] 108 |             for i in 0..length - 1 {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:162:9
[INFO] [stdout]     |
[INFO] [stdout] 162 |     let mut cleaned = text.split_whitespace().collect::<Vec<_>>();
[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: associated function is never used: `add_vertices`
[INFO] [stdout]   --> src/main.rs:60:8
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn add_vertices(&mut self, vs:Vec<&'a LVert>) {
[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: `print`
[INFO] [stdout]    --> src/main.rs:137:8
[INFO] [stdout]     |
[INFO] [stdout] 137 |     fn print(&mut self) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "1e0635270df03062e41e1f305ec5394d3bd86c9dc49905955c3d452643f400b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e0635270df03062e41e1f305ec5394d3bd86c9dc49905955c3d452643f400b4", kill_on_drop: false }`
[INFO] [stdout] 1e0635270df03062e41e1f305ec5394d3bd86c9dc49905955c3d452643f400b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cba13b54d01b1100c8fef8d20d43d2f2b25adce49cc53c0b8e7e69166f82cf95
[INFO] running `Command { std: "docker" "start" "-a" "cba13b54d01b1100c8fef8d20d43d2f2b25adce49cc53c0b8e7e69166f82cf95", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/main.rs:47:18
[INFO] [stderr]    |
[INFO] [stderr] 47 |             Some(i) => {
[INFO] [stderr]    |                  ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/main.rs:108:17
[INFO] [stderr]     |
[INFO] [stderr] 108 |             for i in 0..length - 1 {
[INFO] [stderr]     |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:162:9
[INFO] [stderr]     |
[INFO] [stderr] 162 |     let mut cleaned = text.split_whitespace().collect::<Vec<_>>();
[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: associated function is never used: `add_vertices`
[INFO] [stderr]   --> src/main.rs:60:8
[INFO] [stderr]    |
[INFO] [stderr] 60 |     fn add_vertices(&mut self, vs:Vec<&'a LVert>) {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `print`
[INFO] [stderr]    --> src/main.rs:137:8
[INFO] [stderr]     |
[INFO] [stderr] 137 |     fn print(&mut self) {
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/lyric_graph-6f788108bb2a66f3)
[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" "cba13b54d01b1100c8fef8d20d43d2f2b25adce49cc53c0b8e7e69166f82cf95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cba13b54d01b1100c8fef8d20d43d2f2b25adce49cc53c0b8e7e69166f82cf95", kill_on_drop: false }`
[INFO] [stdout] cba13b54d01b1100c8fef8d20d43d2f2b25adce49cc53c0b8e7e69166f82cf95