[INFO] cloning repository https://github.com/ahdinosaur/metronome
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fahdinosaur%2Fmetronome'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 62baf61cb4dc0873e24a0d1abc854e622ff13743
[INFO] testing ahdinosaur/metronome against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fahdinosaur%2Fmetronome" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[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 d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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 `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ncurses v5.91.0
[INFO] running `Command { std: "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" "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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "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] a4b87ac6242dfd255521ef2b51ddafdcc41f860dedb456cc0b3974458b1bdd6b
[INFO] running `Command { std: "docker" "start" "-a" "a4b87ac6242dfd255521ef2b51ddafdcc41f860dedb456cc0b3974458b1bdd6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4b87ac6242dfd255521ef2b51ddafdcc41f860dedb456cc0b3974458b1bdd6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4b87ac6242dfd255521ef2b51ddafdcc41f860dedb456cc0b3974458b1bdd6b", kill_on_drop: false }`
[INFO] [stdout] a4b87ac6242dfd255521ef2b51ddafdcc41f860dedb456cc0b3974458b1bdd6b
[INFO] running `Command { std: "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" "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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "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] c02c00127ebc222a92991feca3b2e3364790ba9422172f4f1e7dfd4f8c202721
[INFO] running `Command { std: "docker" "start" "-a" "c02c00127ebc222a92991feca3b2e3364790ba9422172f4f1e7dfd4f8c202721", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]    Compiling ncurses v5.91.0
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling metronome v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/interface.rs:79:13
[INFO] [stdout]    |
[INFO] [stdout] 40 | /             loop {
[INFO] [stdout] 41 | |                 let ch = ncurses::wget_wch(ncurses::stdscr());
[INFO] [stdout] 42 | |
[INFO] [stdout] 43 | |                 match ch {
[INFO] [stdout] ...  |
[INFO] [stdout] 75 | |                 ncurses::refresh();
[INFO] [stdout] 76 | |             }
[INFO] [stdout]    | |_____________- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 79 |               ncurses::endwin();
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/interface.rs:115:13
[INFO] [stdout]     |
[INFO] [stdout] 115 |         for i in 0..ticks_since_beat.to_integer() {
[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/interface.rs:127:13
[INFO] [stdout]     |
[INFO] [stdout] 127 |         for i in 0..beats_since_bar.to_integer() {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/interface.rs:139:13
[INFO] [stdout]     |
[INFO] [stdout] 139 |         for i in 0..bars_since_loop.to_integer() {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_first_tick`
[INFO] [stdout]    --> src/clock.rs:137:12
[INFO] [stdout]     |
[INFO] [stdout] 137 |     pub fn is_first_tick (&self) -> bool {
[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: `is_first_beat`
[INFO] [stdout]    --> src/clock.rs:141:12
[INFO] [stdout]     |
[INFO] [stdout] 141 |     pub fn is_first_beat (&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_first_bar`
[INFO] [stdout]    --> src/clock.rs:145:12
[INFO] [stdout]     |
[INFO] [stdout] 145 |     pub fn is_first_bar (&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.50s
[INFO] running `Command { std: "docker" "inspect" "c02c00127ebc222a92991feca3b2e3364790ba9422172f4f1e7dfd4f8c202721", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c02c00127ebc222a92991feca3b2e3364790ba9422172f4f1e7dfd4f8c202721", kill_on_drop: false }`
[INFO] [stdout] c02c00127ebc222a92991feca3b2e3364790ba9422172f4f1e7dfd4f8c202721
[INFO] running `Command { std: "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" "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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "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] c7b5cf1814987bcc78db0338a82473b3e504a37fc3b5e374b62d70d8ccd5e40a
[INFO] running `Command { std: "docker" "start" "-a" "c7b5cf1814987bcc78db0338a82473b3e504a37fc3b5e374b62d70d8ccd5e40a", kill_on_drop: false }`
[INFO] [stderr]    Compiling metronome v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/interface.rs:79:13
[INFO] [stdout]    |
[INFO] [stdout] 40 | /             loop {
[INFO] [stdout] 41 | |                 let ch = ncurses::wget_wch(ncurses::stdscr());
[INFO] [stdout] 42 | |
[INFO] [stdout] 43 | |                 match ch {
[INFO] [stdout] ...  |
[INFO] [stdout] 75 | |                 ncurses::refresh();
[INFO] [stdout] 76 | |             }
[INFO] [stdout]    | |_____________- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 79 |               ncurses::endwin();
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/interface.rs:115:13
[INFO] [stdout]     |
[INFO] [stdout] 115 |         for i in 0..ticks_since_beat.to_integer() {
[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/interface.rs:127:13
[INFO] [stdout]     |
[INFO] [stdout] 127 |         for i in 0..beats_since_bar.to_integer() {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/interface.rs:139:13
[INFO] [stdout]     |
[INFO] [stdout] 139 |         for i in 0..bars_since_loop.to_integer() {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_first_tick`
[INFO] [stdout]    --> src/clock.rs:137:12
[INFO] [stdout]     |
[INFO] [stdout] 137 |     pub fn is_first_tick (&self) -> bool {
[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: `is_first_beat`
[INFO] [stdout]    --> src/clock.rs:141:12
[INFO] [stdout]     |
[INFO] [stdout] 141 |     pub fn is_first_beat (&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_first_bar`
[INFO] [stdout]    --> src/clock.rs:145:12
[INFO] [stdout]     |
[INFO] [stdout] 145 |     pub fn is_first_bar (&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "c7b5cf1814987bcc78db0338a82473b3e504a37fc3b5e374b62d70d8ccd5e40a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7b5cf1814987bcc78db0338a82473b3e504a37fc3b5e374b62d70d8ccd5e40a", kill_on_drop: false }`
[INFO] [stdout] c7b5cf1814987bcc78db0338a82473b3e504a37fc3b5e374b62d70d8ccd5e40a
[INFO] running `Command { std: "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" "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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4016ec76ecccef1615ed54ee559e690fbf6e1181b9f8e0362b507de771e5d997
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4016ec76ecccef1615ed54ee559e690fbf6e1181b9f8e0362b507de771e5d997", kill_on_drop: false }`
[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: 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/interface.rs:127:13
[INFO] [stderr]     |
[INFO] [stderr] 127 |         for i in 0..beats_since_bar.to_integer() {
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it 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: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_first_tick`
[INFO] [stderr]    --> src/clock.rs:137:12
[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: associated function is never used: `is_first_beat`
[INFO] [stderr]    --> src/clock.rs:141:12
[INFO] [stderr]     |
[INFO] [stderr] 141 |     pub fn is_first_beat (&self) -> bool {
[INFO] [stderr]     |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_first_bar`
[INFO] [stderr]    --> src/clock.rs:145:12
[INFO] [stderr]     |
[INFO] [stderr] 145 |     pub fn is_first_bar (&self) -> bool {
[INFO] [stderr]     |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `metronome` (bin "metronome" test) generated 7 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/metronome-a9e84efe2fedead0)
[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" "4016ec76ecccef1615ed54ee559e690fbf6e1181b9f8e0362b507de771e5d997", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4016ec76ecccef1615ed54ee559e690fbf6e1181b9f8e0362b507de771e5d997", kill_on_drop: false }`
[INFO] [stdout] 4016ec76ecccef1615ed54ee559e690fbf6e1181b9f8e0362b507de771e5d997