[INFO] cloning repository https://github.com/ahdinosaur/metronome
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ahdinosaur/metronome" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fahdinosaur%2Fmetronome"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fahdinosaur%2Fmetronome'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 62baf61cb4dc0873e24a0d1abc854e622ff13743
[INFO] checking ahdinosaur/metronome against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fahdinosaur%2Fmetronome" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ahdinosaur/metronome on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ahdinosaur/metronome
[INFO] finished tweaking git repo https://github.com/ahdinosaur/metronome
[INFO] tweaked toml for git repo https://github.com/ahdinosaur/metronome written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/ahdinosaur/metronome already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"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" "/opt/rustwide/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8ccf4b32cfef5a1224450f925b4fe981d3a2986cc2119cff674dc012f7dccd5d
[INFO] running `"docker" "start" "-a" "8ccf4b32cfef5a1224450f925b4fe981d3a2986cc2119cff674dc012f7dccd5d"`
[INFO] [stderr]    Compiling ncurses v5.91.0
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking metronome v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/interface.rs:79:13
[INFO] [stderr]    |
[INFO] [stderr] 40 | /             loop {
[INFO] [stderr] 41 | |                 let ch = ncurses::wget_wch(ncurses::stdscr());
[INFO] [stderr] 42 | |
[INFO] [stderr] 43 | |                 match ch {
[INFO] [stderr] ...  |
[INFO] [stderr] 75 | |                 ncurses::refresh();
[INFO] [stderr] 76 | |             }
[INFO] [stderr]    | |_____________- any code following this expression is unreachable
[INFO] [stderr] ...
[INFO] [stderr] 79 |               ncurses::endwin();
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/interface.rs:115:13
[INFO] [stderr]     |
[INFO] [stderr] 115 |         for i in 0..ticks_since_beat.to_integer() {
[INFO] [stderr]     |             ^ help: consider prefixing 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/interface.rs:127:13
[INFO] [stderr]     |
[INFO] [stderr] 127 |         for i in 0..beats_since_bar.to_integer() {
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/interface.rs:139:13
[INFO] [stderr]     |
[INFO] [stderr] 139 |         for i in 0..bars_since_loop.to_integer() {
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_first_tick`
[INFO] [stderr]    --> src/clock.rs:137:5
[INFO] [stderr]     |
[INFO] [stderr] 137 |     pub fn is_first_tick (&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_first_beat`
[INFO] [stderr]    --> src/clock.rs:141:5
[INFO] [stderr]     |
[INFO] [stderr] 141 |     pub fn is_first_beat (&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_first_bar`
[INFO] [stderr]    --> src/clock.rs:145:5
[INFO] [stderr]     |
[INFO] [stderr] 145 |     pub fn is_first_bar (&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/interface.rs:79:13
[INFO] [stderr]    |
[INFO] [stderr] 40 | /             loop {
[INFO] [stderr] 41 | |                 let ch = ncurses::wget_wch(ncurses::stdscr());
[INFO] [stderr] 42 | |
[INFO] [stderr] 43 | |                 match ch {
[INFO] [stderr] ...  |
[INFO] [stderr] 75 | |                 ncurses::refresh();
[INFO] [stderr] 76 | |             }
[INFO] [stderr]    | |_____________- any code following this expression is unreachable
[INFO] [stderr] ...
[INFO] [stderr] 79 |               ncurses::endwin();
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/interface.rs:115:13
[INFO] [stderr]     |
[INFO] [stderr] 115 |         for i in 0..ticks_since_beat.to_integer() {
[INFO] [stderr]     |             ^ help: consider prefixing 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/interface.rs:127:13
[INFO] [stderr]     |
[INFO] [stderr] 127 |         for i in 0..beats_since_bar.to_integer() {
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/interface.rs:139:13
[INFO] [stderr]     |
[INFO] [stderr] 139 |         for i in 0..bars_since_loop.to_integer() {
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_first_tick`
[INFO] [stderr]    --> src/clock.rs:137:5
[INFO] [stderr]     |
[INFO] [stderr] 137 |     pub fn is_first_tick (&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_first_beat`
[INFO] [stderr]    --> src/clock.rs:141:5
[INFO] [stderr]     |
[INFO] [stderr] 141 |     pub fn is_first_beat (&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_first_bar`
[INFO] [stderr]    --> src/clock.rs:145:5
[INFO] [stderr]     |
[INFO] [stderr] 145 |     pub fn is_first_bar (&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.25s
[INFO] running `"docker" "inspect" "8ccf4b32cfef5a1224450f925b4fe981d3a2986cc2119cff674dc012f7dccd5d"`
[INFO] running `"docker" "rm" "-f" "8ccf4b32cfef5a1224450f925b4fe981d3a2986cc2119cff674dc012f7dccd5d"`
[INFO] [stdout] 8ccf4b32cfef5a1224450f925b4fe981d3a2986cc2119cff674dc012f7dccd5d