[INFO] cloning repository https://github.com/Licenser/task-thread-cmp [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Licenser/task-thread-cmp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLicenser%2Ftask-thread-cmp", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLicenser%2Ftask-thread-cmp'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] c38182af4ebb6664ef478f439debd91588689e36 [INFO] checking Licenser/task-thread-cmp against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLicenser%2Ftask-thread-cmp" "/workspace/builds/worker-14/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Licenser/task-thread-cmp on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] removed /workspace/builds/worker-14/source/.cargo/config [INFO] started tweaking git repo https://github.com/Licenser/task-thread-cmp [INFO] finished tweaking git repo https://github.com/Licenser/task-thread-cmp [INFO] tweaked toml for git repo https://github.com/Licenser/task-thread-cmp written to /workspace/builds/worker-14/source/Cargo.toml [INFO] crate git repo https://github.com/Licenser/task-thread-cmp already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 0dba42807124239ccbc26321e32ab19971629ee9bddd0acb7bea5d9c836573b2 [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" "0dba42807124239ccbc26321e32ab19971629ee9bddd0acb7bea5d9c836573b2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "0dba42807124239ccbc26321e32ab19971629ee9bddd0acb7bea5d9c836573b2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0dba42807124239ccbc26321e32ab19971629ee9bddd0acb7bea5d9c836573b2", kill_on_drop: false }` [INFO] [stdout] 0dba42807124239ccbc26321e32ab19971629ee9bddd0acb7bea5d9c836573b2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "check" "--frozen" "--all" "--all-targets" "--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] 5672566b1133ae49c1ea96c483001a11108be8bdd3feb0a6054195b2fdb28544 [INFO] running `Command { std: "docker" "start" "-a" "5672566b1133ae49c1ea96c483001a11108be8bdd3feb0a6054195b2fdb28544", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling wasm-bindgen-shared v0.2.64 [INFO] [stderr] Checking futures-sink v0.3.5 [INFO] [stderr] Compiling wasm-bindgen v0.2.64 [INFO] [stderr] Checking parking v1.0.3 [INFO] [stderr] Checking fastrand v1.3.2 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Checking kv-log-macro v1.0.6 [INFO] [stderr] Checking futures-channel v0.3.5 [INFO] [stderr] Checking futures-util v0.3.5 [INFO] [stderr] Compiling wasm-bindgen-backend v0.2.64 [INFO] [stderr] Compiling wasm-bindgen-macro-support v0.2.64 [INFO] [stderr] Compiling wasm-bindgen-macro v0.2.64 [INFO] [stderr] Checking blocking v0.4.6 [INFO] [stderr] Checking smol v0.1.18 [INFO] [stderr] Checking js-sys v0.3.41 [INFO] [stderr] Checking web-sys v0.3.41 [INFO] [stderr] Checking gloo-timers v0.2.1 [INFO] [stderr] Checking futures-timer v3.0.2 [INFO] [stderr] Checking async-std v1.6.2 [INFO] [stderr] Checking task-thread-cmp v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/threads.rs:16:13 [INFO] [stdout] | [INFO] [stdout] 16 | tx1.send(x - 2); [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/threads.rs:22:13 [INFO] [stdout] | [INFO] [stdout] 22 | tx2.send(i); [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: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/threads.rs:16:13 [INFO] [stdout] | [INFO] [stdout] 16 | tx1.send(x - 2); [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/threads.rs:22:13 [INFO] [stdout] | [INFO] [stdout] 22 | tx2.send(i); [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: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 46.58s [INFO] running `Command { std: "docker" "inspect" "5672566b1133ae49c1ea96c483001a11108be8bdd3feb0a6054195b2fdb28544", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5672566b1133ae49c1ea96c483001a11108be8bdd3feb0a6054195b2fdb28544", kill_on_drop: false }` [INFO] [stdout] 5672566b1133ae49c1ea96c483001a11108be8bdd3feb0a6054195b2fdb28544