[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] checking Dylan-DPC/thread-lifetime-experiment against master#4fb54ed484e2239a3e9eff3be17df00d2a162be3 for pr-73345
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDylan-DPC%2Fthread-lifetime-experiment" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Dylan-DPC/thread-lifetime-experiment on toolchain 4fb54ed484e2239a3e9eff3be17df00d2a162be3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "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-1/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" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a15dbbb9cb50520f5a5dffdd07ee80bc1904a22dfe47c957f1cd750e21c7693e
[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" "a15dbbb9cb50520f5a5dffdd07ee80bc1904a22dfe47c957f1cd750e21c7693e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a15dbbb9cb50520f5a5dffdd07ee80bc1904a22dfe47c957f1cd750e21c7693e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a15dbbb9cb50520f5a5dffdd07ee80bc1904a22dfe47c957f1cd750e21c7693e", kill_on_drop: false }`
[INFO] [stdout] a15dbbb9cb50520f5a5dffdd07ee80bc1904a22dfe47c957f1cd750e21c7693e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 73cf245906f2d5851c2010b2b854d740a1b2f4a8c637852e768cfa38cae0b35f
[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" "73cf245906f2d5851c2010b2b854d740a1b2f4a8c637852e768cfa38cae0b35f", kill_on_drop: false }`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] Blocking waiting for file lock on package cache
[INFO] [stderr] Compiling proc-macro2 v0.4.27
[INFO] [stderr] Compiling syn v0.15.30
[INFO] [stderr] Compiling serde v1.0.90
[INFO] [stderr] Compiling libc v0.2.51
[INFO] [stderr] Checking lazy_static v1.3.0
[INFO] [stderr] Checking cfg-if v0.1.7
[INFO] [stderr] Checking stable_deref_trait v1.1.1
[INFO] [stderr] Checking smallvec v0.6.9
[INFO] [stderr] Checking crossbeam-utils v0.6.5
[INFO] [stderr] Checking crossbeam-channel v0.3.8
[INFO] [stderr] Compiling quote v0.6.12
[INFO] [stderr] Checking page_size v0.4.1
[INFO] [stderr] Compiling serde_derive v1.0.90
[INFO] [stderr] Compiling rental-impl v0.5.2
[INFO] [stderr] Checking rental v0.5.3
[INFO] [stderr] Checking hashbrown v0.2.0
[INFO] [stderr] Checking serde_json v1.0.39
[INFO] [stderr] Checking simdjson v0.1.0 (https://github.com/Licenser/simdjson-rs#4d53c41a)
[INFO] [stderr] Checking 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<rentals::Wrap>, Receiver<rentals::Wrap>) = bounded(5);
[INFO] [stdout] 30 | | let (s2, r2): (Sender<rentals::Wrap>, Receiver<rentals::Wrap>) = 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] [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<rentals::Wrap>, Receiver<rentals::Wrap>) = bounded(5);
[INFO] [stdout] 30 | | let (s2, r2): (Sender<rentals::Wrap>, Receiver<rentals::Wrap>) = 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 08s
[INFO] running `Command { std: "docker" "inspect" "73cf245906f2d5851c2010b2b854d740a1b2f4a8c637852e768cfa38cae0b35f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73cf245906f2d5851c2010b2b854d740a1b2f4a8c637852e768cfa38cae0b35f", kill_on_drop: false }`
[INFO] [stdout] 73cf245906f2d5851c2010b2b854d740a1b2f4a8c637852e768cfa38cae0b35f