[INFO] fetching crate may_queue 0.1.7...
[INFO] checking may_queue-0.1.7 against try#b2f80f6008cdafc35b4472bd46afa16cc6b0cd63 for pr-79470
[INFO] extracting crate may_queue 0.1.7 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate may_queue 0.1.7 on toolchain b2f80f6008cdafc35b4472bd46afa16cc6b0cd63
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate may_queue 0.1.7
[INFO] finished tweaking crates.io crate may_queue 0.1.7
[INFO] tweaked toml for crates.io crate may_queue 0.1.7 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "metadata" "--no-deps" "--format-version=1", 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] 5d8bdcfb38ec4c0d17007fbac6ef088acc8df6be00af3c3b1f200cf01be29701
[INFO] running `Command { std: "docker" "start" "-a" "5d8bdcfb38ec4c0d17007fbac6ef088acc8df6be00af3c3b1f200cf01be29701", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5d8bdcfb38ec4c0d17007fbac6ef088acc8df6be00af3c3b1f200cf01be29701", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d8bdcfb38ec4c0d17007fbac6ef088acc8df6be00af3c3b1f200cf01be29701", kill_on_drop: false }`
[INFO] [stdout] 5d8bdcfb38ec4c0d17007fbac6ef088acc8df6be00af3c3b1f200cf01be29701
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5efeace6bb265a426ce69e50cd969ebe9dd30ebb3fa9388bfc19b4457e430126
[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" "5efeace6bb265a426ce69e50cd969ebe9dd30ebb3fa9388bfc19b4457e430126", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling may_queue v0.1.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stdout] warning: attribute should be applied to a function
[INFO] [stdout]   --> src/mpsc_list.rs:80:21
[INFO] [stdout]    |
[INFO] [stdout] 80 |                       #[cold]
[INFO] [stdout]    |                       ^^^^^^^
[INFO] [stdout] 81 | /                     {
[INFO] [stdout] 82 | |                         thread::yield_now();
[INFO] [stdout] 83 | |                         i = 0;
[INFO] [stdout] 84 | |                     }
[INFO] [stdout]    | |_____________________- not a function
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: attribute should be applied to a function
[INFO] [stdout]   --> src/mpsc_list_v1.rs:74:17
[INFO] [stdout]    |
[INFO] [stdout] 74 |                 #[cold]
[INFO] [stdout]    |                 ^^^^^^^
[INFO] [stdout] 75 |                 return None;
[INFO] [stdout]    |                 ----------- not a function
[INFO] [stdout]    |
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: attribute should be applied to a function
[INFO] [stdout]    --> src/mpsc_list_v1.rs:110:21
[INFO] [stdout]     |
[INFO] [stdout] 110 |                     #[cold]
[INFO] [stdout]     |                     ^^^^^^^
[INFO] [stdout] 111 |                     let _: Box<Node<T>> = Box::from_raw(node);
[INFO] [stdout]     |                     ------------------------------------------ not a function
[INFO] [stdout]     |
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: attribute should be applied to a function
[INFO] [stdout]    --> src/mpsc_list_v1.rs:205:21
[INFO] [stdout]     |
[INFO] [stdout] 205 |                       #[cold]
[INFO] [stdout]     |                       ^^^^^^^
[INFO] [stdout] 206 | /                     {
[INFO] [stdout] 207 | |                         thread::yield_now();
[INFO] [stdout] 208 | |                         i = 0;
[INFO] [stdout] 209 | |                     }
[INFO] [stdout]     | |_____________________- not a function
[INFO] [stdout]     |
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: attribute should be applied to a function
[INFO] [stdout]    --> src/mpsc_list_v1.rs:302:21
[INFO] [stdout]     |
[INFO] [stdout] 302 |                       #[cold]
[INFO] [stdout]     |                       ^^^^^^^
[INFO] [stdout] 303 | /                     {
[INFO] [stdout] 304 | |                         thread::yield_now();
[INFO] [stdout] 305 | |                         i = 0;
[INFO] [stdout] 306 | |                     }
[INFO] [stdout]     | |_____________________- not a function
[INFO] [stdout]     |
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: attribute should be applied to a function
[INFO] [stdout]   --> src/mpsc_list.rs:80:21
[INFO] [stdout]    |
[INFO] [stdout] 80 |                       #[cold]
[INFO] [stdout]    |                       ^^^^^^^
[INFO] [stdout] 81 | /                     {
[INFO] [stdout] 82 | |                         thread::yield_now();
[INFO] [stdout] 83 | |                         i = 0;
[INFO] [stdout] 84 | |                     }
[INFO] [stdout]    | |_____________________- not a function
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` 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] 
[INFO] [stdout] 
[INFO] [stdout] warning: attribute should be applied to a function
[INFO] [stdout]   --> src/mpsc_list_v1.rs:74:17
[INFO] [stdout]    |
[INFO] [stdout] 74 |                 #[cold]
[INFO] [stdout]    |                 ^^^^^^^
[INFO] [stdout] 75 |                 return None;
[INFO] [stdout]    |                 ----------- not a function
[INFO] [stdout]    |
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: attribute should be applied to a function
[INFO] [stdout]    --> src/mpsc_list_v1.rs:110:21
[INFO] [stdout]     |
[INFO] [stdout] 110 |                     #[cold]
[INFO] [stdout]     |                     ^^^^^^^
[INFO] [stdout] 111 |                     let _: Box<Node<T>> = Box::from_raw(node);
[INFO] [stdout]     |                     ------------------------------------------ not a function
[INFO] [stdout]     |
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: attribute should be applied to a function
[INFO] [stdout]    --> src/mpsc_list_v1.rs:205:21
[INFO] [stdout]     |
[INFO] [stdout] 205 |                       #[cold]
[INFO] [stdout]     |                       ^^^^^^^
[INFO] [stdout] 206 | /                     {
[INFO] [stdout] 207 | |                         thread::yield_now();
[INFO] [stdout] 208 | |                         i = 0;
[INFO] [stdout] 209 | |                     }
[INFO] [stdout]     | |_____________________- not a function
[INFO] [stdout]     |
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: attribute should be applied to a function
[INFO] [stdout]    --> src/mpsc_list_v1.rs:302:21
[INFO] [stdout]     |
[INFO] [stdout] 302 |                       #[cold]
[INFO] [stdout]     |                       ^^^^^^^
[INFO] [stdout] 303 | /                     {
[INFO] [stdout] 304 | |                         thread::yield_now();
[INFO] [stdout] 305 | |                         i = 0;
[INFO] [stdout] 306 | |                     }
[INFO] [stdout]     | |_____________________- not a function
[INFO] [stdout]     |
[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] 
[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 6.44s
[INFO] running `Command { std: "docker" "inspect" "5efeace6bb265a426ce69e50cd969ebe9dd30ebb3fa9388bfc19b4457e430126", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5efeace6bb265a426ce69e50cd969ebe9dd30ebb3fa9388bfc19b4457e430126", kill_on_drop: false }`
[INFO] [stdout] 5efeace6bb265a426ce69e50cd969ebe9dd30ebb3fa9388bfc19b4457e430126