[INFO] updating cached repository https://github.com/Windfisch/loopfisch
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3688311cf0f788d5541c284cfde3e90df4bdf859
[INFO] checking Windfisch/loopfisch against master#e1beee4992ad4b235fc700bf7af1ee86f894ea53 for pr-74130
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWindfisch%2Floopfisch" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Windfisch/loopfisch on toolchain e1beee4992ad4b235fc700bf7af1ee86f894ea53
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Windfisch/loopfisch
[INFO] finished tweaking git repo https://github.com/Windfisch/loopfisch
[INFO] tweaked toml for git repo https://github.com/Windfisch/loopfisch written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/Windfisch/loopfisch already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1ff7c7a19c417fac681aa0684313662ec29f92293abe467f3b7e0c342c95198e
[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" "1ff7c7a19c417fac681aa0684313662ec29f92293abe467f3b7e0c342c95198e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ff7c7a19c417fac681aa0684313662ec29f92293abe467f3b7e0c342c95198e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ff7c7a19c417fac681aa0684313662ec29f92293abe467f3b7e0c342c95198e", kill_on_drop: false }`
[INFO] [stdout] 1ff7c7a19c417fac681aa0684313662ec29f92293abe467f3b7e0c342c95198e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+e1beee4992ad4b235fc700bf7af1ee86f894ea53" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85038d7e371698fe3c53ac4afdeab2fded5ce98108b455e6bca66f9cabce77e1
[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" "85038d7e371698fe3c53ac4afdeab2fded5ce98108b455e6bca66f9cabce77e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling libloading v0.6.2
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking ringbuf v0.2.1
[INFO] [stderr]     Checking assert_no_alloc v0.1.0 (https://github.com/Windfisch/rust-assert-no-alloc#3aadd93f)
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stderr]     Checking intrusive-collections v0.9.0
[INFO] [stderr]     Checking jack-sys v0.2.0 (https://github.com/Windfisch/rust-jack#d77752bf)
[INFO] [stderr]     Checking jack v0.6.2 (https://github.com/Windfisch/rust-jack#d77752bf)
[INFO] [stderr]     Checking loopfisch v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `max`
[INFO] [stdout]   --> src/main.rs:17:20
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::cmp::{min,max};
[INFO] [stdout]    |                    ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `max`
[INFO] [stdout]   --> src/main.rs:17:20
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::cmp::{min,max};
[INFO] [stdout]    |                    ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::thread::sleep_ms': replaced by `std::thread::sleep`
[INFO] [stdout]    --> src/main.rs:575:2
[INFO] [stdout]     |
[INFO] [stdout] 575 |     std::thread::sleep_ms(1000);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::thread::sleep_ms': replaced by `std::thread::sleep`
[INFO] [stdout]    --> src/main.rs:578:2
[INFO] [stdout]     |
[INFO] [stdout] 578 |     std::thread::sleep_ms(10000);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::thread::sleep_ms': replaced by `std::thread::sleep`
[INFO] [stdout]    --> src/main.rs:575:2
[INFO] [stdout]     |
[INFO] [stdout] 575 |     std::thread::sleep_ms(1000);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::thread::sleep_ms': replaced by `std::thread::sleep`
[INFO] [stdout]    --> src/main.rs:578:2
[INFO] [stdout]     |
[INFO] [stdout] 578 |     std::thread::sleep_ms(10000);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/main.rs:296:6
[INFO] [stdout]     |
[INFO] [stdout] 295 |                     panic!();
[INFO] [stdout]     |                     --------- any code following this expression is unreachable
[INFO] [stdout] 296 |                     unreachable!();
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/main.rs:296:6
[INFO] [stdout]     |
[INFO] [stdout] 295 |                     panic!();
[INFO] [stdout]     |                     --------- any code following this expression is unreachable
[INFO] [stdout] 296 |                     unreachable!();
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `client`
[INFO] [stdout]    --> src/main.rs:318:17
[INFO] [stdout]     |
[INFO] [stdout] 318 | fn play_silence(client: &jack::Client, scope: &jack::ProcessScope, device: &mut AudioDevice, range: std::ops::Range<usize>) {
[INFO] [stdout]     |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_client`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `client`
[INFO] [stdout]    --> src/main.rs:282:29
[INFO] [stdout]     |
[INFO] [stdout] 282 |     pub fn playback(&mut self, client: &jack::Client, scope: &jack::ProcessScope, device: &mut AudioDevice, range: std::ops::Range<usize>) {
[INFO] [stdout]     |                                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_client`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `client`
[INFO] [stdout]    --> src/main.rs:308:27
[INFO] [stdout]     |
[INFO] [stdout] 308 |     pub fn record(&mut self, client: &jack::Client, scope: &jack::ProcessScope, device: &AudioDevice, range: std::ops::Range<usize>) {
[INFO] [stdout]     |                              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_client`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `client`
[INFO] [stdout]    --> src/main.rs:318:17
[INFO] [stdout]     |
[INFO] [stdout] 318 | fn play_silence(client: &jack::Client, scope: &jack::ProcessScope, device: &mut AudioDevice, range: std::ops::Range<usize>) {
[INFO] [stdout]     |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_client`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `client`
[INFO] [stdout]    --> src/main.rs:282:29
[INFO] [stdout]     |
[INFO] [stdout] 282 |     pub fn playback(&mut self, client: &jack::Client, scope: &jack::ProcessScope, device: &mut AudioDevice, range: std::ops::Range<usize>) {
[INFO] [stdout]     |                                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_client`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `client`
[INFO] [stdout]    --> src/main.rs:308:27
[INFO] [stdout]     |
[INFO] [stdout] 308 |     pub fn record(&mut self, client: &jack::Client, scope: &jack::ProcessScope, device: &AudioDevice, range: std::ops::Range<usize>) {
[INFO] [stdout]     |                              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_client`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `unmuted`
[INFO] [stdout]    --> src/main.rs:276:2
[INFO] [stdout]     |
[INFO] [stdout] 276 |     unmuted: bool,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `remove_unordered_iter`
[INFO] [stdout]    --> src/main.rs:420:4
[INFO] [stdout]     |
[INFO] [stdout] 420 | fn remove_unordered_iter<T,F: FnMut(&mut T) -> bool>(vec: &mut Vec<T>, filter: F) -> RemoveUnorderedIter<T,F> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:312:5
[INFO] [stdout]     |
[INFO] [stdout] 312 |                 channel_buffer.push(*d);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:372:3
[INFO] [stdout]     |
[INFO] [stdout] 372 |         self.new_take_channel.push(take_node);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `unmuted`
[INFO] [stdout]    --> src/main.rs:276:2
[INFO] [stdout]     |
[INFO] [stdout] 276 |     unmuted: bool,
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `remove_unordered_iter`
[INFO] [stdout]    --> src/main.rs:420:4
[INFO] [stdout]     |
[INFO] [stdout] 420 | fn remove_unordered_iter<T,F: FnMut(&mut T) -> bool>(vec: &mut Vec<T>, filter: F) -> RemoveUnorderedIter<T,F> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:312:5
[INFO] [stdout]     |
[INFO] [stdout] 312 |                 channel_buffer.push(*d);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:372:3
[INFO] [stdout]     |
[INFO] [stdout] 372 |         self.new_take_channel.push(take_node);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.09s
[INFO] running `Command { std: "docker" "inspect" "85038d7e371698fe3c53ac4afdeab2fded5ce98108b455e6bca66f9cabce77e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85038d7e371698fe3c53ac4afdeab2fded5ce98108b455e6bca66f9cabce77e1", kill_on_drop: false }`
[INFO] [stdout] 85038d7e371698fe3c53ac4afdeab2fded5ce98108b455e6bca66f9cabce77e1