[INFO] cloning 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" "clone" "--bare" "https://github.com/Dylan-DPC/thread-lifetime-experiment" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDylan-DPC%2Fthread-lifetime-experiment", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDylan-DPC%2Fthread-lifetime-experiment'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] e8a4f3f52d9fb0400d8eb2ba5f57911ceef3ba11 [INFO] checking Dylan-DPC/thread-lifetime-experiment against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDylan-DPC%2Fthread-lifetime-experiment" "/workspace/builds/worker-5/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Dylan-DPC/thread-lifetime-experiment on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-5/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating git repository `https://github.com/Licenser/simdjson-rs` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded page_size v0.4.1 [INFO] [stderr] Downloaded rental-impl v0.5.2 [INFO] [stderr] Downloaded rental v0.5.3 [INFO] [stderr] Downloaded hashbrown v0.2.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 0d5188c76715f53872107458e2b3c39cf3bdc03ac4bbef746fe9a93d0fba43b3 [INFO] running `Command { std: "docker" "start" "-a" "0d5188c76715f53872107458e2b3c39cf3bdc03ac4bbef746fe9a93d0fba43b3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "0d5188c76715f53872107458e2b3c39cf3bdc03ac4bbef746fe9a93d0fba43b3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0d5188c76715f53872107458e2b3c39cf3bdc03ac4bbef746fe9a93d0fba43b3", kill_on_drop: false }` [INFO] [stdout] 0d5188c76715f53872107458e2b3c39cf3bdc03ac4bbef746fe9a93d0fba43b3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 04c0ad218195db54ec65d57d6f3f7111d698b0b5d86f144e263a90e80e00b700 [INFO] running `Command { std: "docker" "start" "-a" "04c0ad218195db54ec65d57d6f3f7111d698b0b5d86f144e263a90e80e00b700", kill_on_drop: false }` [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 stable_deref_trait v1.1.1 [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: using `procedural-masquerade` crate [INFO] [stdout] --> src/main.rs:10:1 [INFO] [stdout] | [INFO] [stdout] 10 | / rental! { [INFO] [stdout] 11 | | mod rentals { [INFO] [stdout] 12 | | use super::*; [INFO] [stdout] 13 | | #[rental_mut(covariant,debug)] [INFO] [stdout] ... | [INFO] [stdout] 18 | | } [INFO] [stdout] 19 | | } [INFO] [stdout] | |_^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(proc_macro_back_compat)]` on by default [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #83125 [INFO] [stdout] = note: The `procedural-masquerade` crate has been unnecessary since Rust 1.30.0. Versions of this crate below 0.1.7 will eventually stop compiling. [INFO] [stdout] = note: this warning originates in the macro `rental` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `procedural-masquerade` crate [INFO] [stdout] --> src/main.rs:10:1 [INFO] [stdout] | [INFO] [stdout] 10 | / rental! { [INFO] [stdout] 11 | | mod rentals { [INFO] [stdout] 12 | | use super::*; [INFO] [stdout] 13 | | #[rental_mut(covariant,debug)] [INFO] [stdout] ... | [INFO] [stdout] 18 | | } [INFO] [stdout] 19 | | } [INFO] [stdout] | |_^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(proc_macro_back_compat)]` on by default [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #83125 [INFO] [stdout] = note: The `procedural-masquerade` crate has been unnecessary since Rust 1.30.0. Versions of this crate below 0.1.7 will eventually stop compiling. [INFO] [stdout] = note: this warning originates in the macro `rental` (in Nightly builds, run with -Z macro-backtrace for more info) [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: 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 `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 `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 `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: unused `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 `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 `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: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 36.40s [INFO] running `Command { std: "docker" "inspect" "04c0ad218195db54ec65d57d6f3f7111d698b0b5d86f144e263a90e80e00b700", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "04c0ad218195db54ec65d57d6f3f7111d698b0b5d86f144e263a90e80e00b700", kill_on_drop: false }` [INFO] [stdout] 04c0ad218195db54ec65d57d6f3f7111d698b0b5d86f144e263a90e80e00b700