[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#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDylan-DPC%2Fthread-lifetime-experiment" "/workspace/builds/worker-4/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Dylan-DPC/thread-lifetime-experiment on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "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-4/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" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating git repository `https://github.com/Licenser/simdjson-rs` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded cfg-if v0.1.7 [INFO] [stderr] Downloaded page_size v0.4.1 [INFO] [stderr] Downloaded smallvec v0.6.9 [INFO] [stderr] Downloaded serde_derive v1.0.90 [INFO] [stderr] Downloaded crossbeam-channel v0.3.8 [INFO] [stderr] Downloaded serde v1.0.90 [INFO] [stderr] Downloaded syn v0.15.30 [INFO] [stderr] Downloaded hashbrown v0.2.0 [INFO] [stderr] Downloaded rental-impl v0.5.2 [INFO] [stderr] Downloaded rental v0.5.3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d8a6be4878e17c79f01be13dfdf465dfc568f1935fc26ca71c379722ae5ac239 [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" "d8a6be4878e17c79f01be13dfdf465dfc568f1935fc26ca71c379722ae5ac239", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d8a6be4878e17c79f01be13dfdf465dfc568f1935fc26ca71c379722ae5ac239", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d8a6be4878e17c79f01be13dfdf465dfc568f1935fc26ca71c379722ae5ac239", kill_on_drop: false }` [INFO] [stdout] d8a6be4878e17c79f01be13dfdf465dfc568f1935fc26ca71c379722ae5ac239 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "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] 34426a9ac15adbf1730e4f83761b88462d2eec937895cbf2f3aee763925933ce [INFO] running `Command { std: "docker" "start" "-a" "34426a9ac15adbf1730e4f83761b88462d2eec937895cbf2f3aee763925933ce", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v0.4.27 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Compiling syn v0.15.30 [INFO] [stderr] Compiling serde v1.0.90 [INFO] [stderr] Checking lazy_static v1.3.0 [INFO] [stderr] Checking cfg-if v0.1.7 [INFO] [stderr] Checking page_size v0.4.1 [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] Compiling serde_derive v1.0.90 [INFO] [stderr] Compiling rental-impl v0.5.2 [INFO] [stderr] Checking rental v0.5.3 [INFO] [stderr] Checking serde_json v1.0.39 [INFO] [stderr] Checking hashbrown v0.2.0 [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 1m 01s [INFO] running `Command { std: "docker" "inspect" "34426a9ac15adbf1730e4f83761b88462d2eec937895cbf2f3aee763925933ce", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "34426a9ac15adbf1730e4f83761b88462d2eec937895cbf2f3aee763925933ce", kill_on_drop: false }` [INFO] [stdout] 34426a9ac15adbf1730e4f83761b88462d2eec937895cbf2f3aee763925933ce