[INFO] updating cached repository https://github.com/Dylan-DPC/thread-lifetime-experiment [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] e8a4f3f52d9fb0400d8eb2ba5f57911ceef3ba11 [INFO] testing Dylan-DPC/thread-lifetime-experiment against beta-2020-07-24 for beta-1.46-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDylan-DPC%2Fthread-lifetime-experiment" "/workspace/builds/worker-2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Dylan-DPC/thread-lifetime-experiment on toolchain beta-2020-07-24 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Dylan-DPC/thread-lifetime-experiment [INFO] finished tweaking git repo https://github.com/Dylan-DPC/thread-lifetime-experiment [INFO] tweaked toml for git repo https://github.com/Dylan-DPC/thread-lifetime-experiment written to /workspace/builds/worker-2/source/Cargo.toml [INFO] crate git repo https://github.com/Dylan-DPC/thread-lifetime-experiment already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d37d7f0344ad4e4d72873ac48977a8bb5e11e62254be50fa0d8e247589fbf7a5 [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" "d37d7f0344ad4e4d72873ac48977a8bb5e11e62254be50fa0d8e247589fbf7a5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d37d7f0344ad4e4d72873ac48977a8bb5e11e62254be50fa0d8e247589fbf7a5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d37d7f0344ad4e4d72873ac48977a8bb5e11e62254be50fa0d8e247589fbf7a5", kill_on_drop: false }` [INFO] [stdout] d37d7f0344ad4e4d72873ac48977a8bb5e11e62254be50fa0d8e247589fbf7a5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 0bf2761b0c753dba4a07646819935ef993a959be3700b67deee73b86e250e02b [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" "0bf2761b0c753dba4a07646819935ef993a959be3700b67deee73b86e250e02b", kill_on_drop: false }` [INFO] [stderr] Compiling syn v0.15.30 [INFO] [stderr] Compiling serde v1.0.90 [INFO] [stderr] Compiling stable_deref_trait v1.1.1 [INFO] [stderr] Compiling crossbeam-channel v0.3.8 [INFO] [stderr] Compiling page_size v0.4.1 [INFO] [stderr] Compiling serde_derive v1.0.90 [INFO] [stderr] Compiling rental-impl v0.5.2 [INFO] [stderr] Compiling rental v0.5.3 [INFO] [stderr] Compiling hashbrown v0.2.0 [INFO] [stderr] Compiling serde_json v1.0.39 [INFO] [stderr] Compiling simdjson v0.1.0 (https://github.com/Licenser/simdjson-rs#4d53c41a) [INFO] [stderr] Compiling thread-lifetime-experiment v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:62:25 [INFO] [stdout] | [INFO] [stdout] 62 | let mut content = line.unwrap(); [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/main.rs:28:5 [INFO] [stdout] | [INFO] [stdout] 28 | / thread::scope(|t| { [INFO] [stdout] 29 | | let (s1, r1): (Sender, Receiver) = bounded(5); [INFO] [stdout] 30 | | let (s2, r2): (Sender, Receiver) = bounded(5); [INFO] [stdout] 31 | | t.spawn(move |_| { [INFO] [stdout] ... | [INFO] [stdout] 70 | | }); [INFO] [stdout] 71 | | }); [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:53:17 [INFO] [stdout] | [INFO] [stdout] 53 | s2.send(data); [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: unused `std::result::Result` that must be used [INFO] [stdout] --> src/main.rs:67:21 [INFO] [stdout] | [INFO] [stdout] 67 | s1.send(value); [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: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1m 11s [INFO] running `Command { std: "docker" "inspect" "0bf2761b0c753dba4a07646819935ef993a959be3700b67deee73b86e250e02b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0bf2761b0c753dba4a07646819935ef993a959be3700b67deee73b86e250e02b", kill_on_drop: false }` [INFO] [stdout] 0bf2761b0c753dba4a07646819935ef993a959be3700b67deee73b86e250e02b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "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] b5447a36efbb7df378c2f58c3e8ca41f8b6e00ea566a00858137592538dce1d9 [INFO] running `Command { std: "docker" "start" "-a" "b5447a36efbb7df378c2f58c3e8ca41f8b6e00ea566a00858137592538dce1d9", kill_on_drop: false }` [INFO] [stderr] Compiling thread-lifetime-experiment v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:62:25 [INFO] [stdout] | [INFO] [stdout] 62 | let mut content = line.unwrap(); [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/main.rs:28:5 [INFO] [stdout] | [INFO] [stdout] 28 | / thread::scope(|t| { [INFO] [stdout] 29 | | let (s1, r1): (Sender, Receiver) = bounded(5); [INFO] [stdout] 30 | | let (s2, r2): (Sender, Receiver) = bounded(5); [INFO] [stdout] 31 | | t.spawn(move |_| { [INFO] [stdout] ... | [INFO] [stdout] 70 | | }); [INFO] [stdout] 71 | | }); [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:53:17 [INFO] [stdout] | [INFO] [stdout] 53 | s2.send(data); [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: unused `std::result::Result` that must be used [INFO] [stdout] --> src/main.rs:67:21 [INFO] [stdout] | [INFO] [stdout] 67 | s1.send(value); [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: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.07s [INFO] running `Command { std: "docker" "inspect" "b5447a36efbb7df378c2f58c3e8ca41f8b6e00ea566a00858137592538dce1d9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b5447a36efbb7df378c2f58c3e8ca41f8b6e00ea566a00858137592538dce1d9", kill_on_drop: false }` [INFO] [stdout] b5447a36efbb7df378c2f58c3e8ca41f8b6e00ea566a00858137592538dce1d9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] c9b1a23009f603207c28fb81bccac10f5dbcfb63c634993eb48796a6fb290603 [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" "c9b1a23009f603207c28fb81bccac10f5dbcfb63c634993eb48796a6fb290603", kill_on_drop: false }` [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:62:25 [INFO] [stderr] | [INFO] [stderr] 62 | let mut content = line.unwrap(); [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:28:5 [INFO] [stderr] | [INFO] [stderr] 28 | / thread::scope(|t| { [INFO] [stderr] 29 | | let (s1, r1): (Sender, Receiver) = bounded(5); [INFO] [stderr] 30 | | let (s2, r2): (Sender, Receiver) = bounded(5); [INFO] [stderr] 31 | | t.spawn(move |_| { [INFO] [stderr] ... | [INFO] [stderr] 70 | | }); [INFO] [stderr] 71 | | }); [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:53:17 [INFO] [stderr] | [INFO] [stderr] 53 | s2.send(data); [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:67:21 [INFO] [stderr] | [INFO] [stderr] 67 | s1.send(value); [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: 4 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.10s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/thread_lifetime_experiment-0deb1f171e02173a [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 [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "c9b1a23009f603207c28fb81bccac10f5dbcfb63c634993eb48796a6fb290603", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c9b1a23009f603207c28fb81bccac10f5dbcfb63c634993eb48796a6fb290603", kill_on_drop: false }` [INFO] [stdout] c9b1a23009f603207c28fb81bccac10f5dbcfb63c634993eb48796a6fb290603