[INFO] cloning repository https://github.com/kasbah/looper [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kasbah/looper" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkasbah%2Flooper"` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkasbah%2Flooper'... [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] a10931cef6ed86e1cec237eebe8645385f2a9d42 [INFO] checking kasbah/looper against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkasbah%2Flooper" "/workspace/builds/worker-13/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/kasbah/looper on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d [INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/kasbah/looper [INFO] finished tweaking git repo https://github.com/kasbah/looper [INFO] tweaked toml for git repo https://github.com/kasbah/looper written to /workspace/builds/worker-13/source/Cargo.toml [INFO] crate git repo https://github.com/kasbah/looper already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] f595716ff3eb9fc5efc03005aea5d8797af14a1b686826e9533416baaf16ec82 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `"docker" "start" "-a" "f595716ff3eb9fc5efc03005aea5d8797af14a1b686826e9533416baaf16ec82"` [INFO] [stderr] Checking libc v0.2.22 [INFO] [stderr] Checking lazy_static v0.2.8 [INFO] [stderr] Checking bitflags v0.7.0 [INFO] [stderr] Checking jack-sys v0.1.4 [INFO] [stderr] Checking jack v0.5.0 (https://github.com/RustAudio/rust-jack.git#c352502e) [INFO] [stderr] Checking looper v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused import: `Read` [INFO] [stderr] --> src/main.rs:4:21 [INFO] [stderr] | [INFO] [stderr] 4 | use std::io::{self, Read}; [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `Read` [INFO] [stderr] --> src/main.rs:4:21 [INFO] [stderr] | [INFO] [stderr] 4 | use std::io::{self, Read}; [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Playing` [INFO] [stderr] --> src/looper.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | Playing, [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Recording` [INFO] [stderr] --> src/looper.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | Recording, [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Playing` [INFO] [stderr] --> src/looper.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | Playing, [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Recording` [INFO] [stderr] --> src/looper.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | Recording, [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:75:17 [INFO] [stderr] | [INFO] [stderr] 75 | tx.send(Messages::SetThru(1.0)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:79:17 [INFO] [stderr] | [INFO] [stderr] 79 | tx.send(Messages::SetThru(0.0)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:75:17 [INFO] [stderr] | [INFO] [stderr] 75 | tx.send(Messages::SetThru(1.0)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:79:17 [INFO] [stderr] | [INFO] [stderr] 79 | tx.send(Messages::SetThru(0.0)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: 5 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: 5 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.38s [INFO] running `"docker" "inspect" "f595716ff3eb9fc5efc03005aea5d8797af14a1b686826e9533416baaf16ec82"` [INFO] running `"docker" "rm" "-f" "f595716ff3eb9fc5efc03005aea5d8797af14a1b686826e9533416baaf16ec82"` [INFO] [stdout] f595716ff3eb9fc5efc03005aea5d8797af14a1b686826e9533416baaf16ec82