[INFO] fetching crate may_queue 0.1.7...
[INFO] testing may_queue-0.1.7 against beta-2020-10-09 for beta-1.48-1
[INFO] extracting crate may_queue 0.1.7 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate may_queue 0.1.7 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "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-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "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" "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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a3095b980ae66bd5bdebba6f065fe01b5c31878260c87dd3a504c24e3ed61b46
[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" "a3095b980ae66bd5bdebba6f065fe01b5c31878260c87dd3a504c24e3ed61b46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a3095b980ae66bd5bdebba6f065fe01b5c31878260c87dd3a504c24e3ed61b46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3095b980ae66bd5bdebba6f065fe01b5c31878260c87dd3a504c24e3ed61b46", kill_on_drop: false }`
[INFO] [stdout] a3095b980ae66bd5bdebba6f065fe01b5c31878260c87dd3a504c24e3ed61b46
[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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8e4a3beef90c78cd9d2b4c6e51e7d068f0e336ffb8e5d5b2c940e2877d3b214d
[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" "8e4a3beef90c78cd9d2b4c6e51e7d068f0e336ffb8e5d5b2c940e2877d3b214d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling may_queue v0.1.7 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling 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: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.25s
[INFO] running `Command { std: "docker" "inspect" "8e4a3beef90c78cd9d2b4c6e51e7d068f0e336ffb8e5d5b2c940e2877d3b214d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e4a3beef90c78cd9d2b4c6e51e7d068f0e336ffb8e5d5b2c940e2877d3b214d", kill_on_drop: false }`
[INFO] [stdout] 8e4a3beef90c78cd9d2b4c6e51e7d068f0e336ffb8e5d5b2c940e2877d3b214d
[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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8c0b1fd6a5f25b0a03c19fc6690390c10c51aad43c398499430f27009a189dae
[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" "8c0b1fd6a5f25b0a03c19fc6690390c10c51aad43c398499430f27009a189dae", kill_on_drop: false }`
[INFO] [stderr]    Compiling may_queue v0.1.7 (/opt/rustwide/workdir)
[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: 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] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.73s
[INFO] running `Command { std: "docker" "inspect" "8c0b1fd6a5f25b0a03c19fc6690390c10c51aad43c398499430f27009a189dae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c0b1fd6a5f25b0a03c19fc6690390c10c51aad43c398499430f27009a189dae", kill_on_drop: false }`
[INFO] [stdout] 8c0b1fd6a5f25b0a03c19fc6690390c10c51aad43c398499430f27009a189dae
[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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5a6d33a631a1925b29b81e4b1aa2416dba386482c3165b6ea8667b1375b1c46e
[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" "5a6d33a631a1925b29b81e4b1aa2416dba386482c3165b6ea8667b1375b1c46e", kill_on_drop: false }`
[INFO] [stderr] warning: attribute should be applied to a function
[INFO] [stderr]   --> src/mpsc_list.rs:80:21
[INFO] [stderr]    |
[INFO] [stderr] 80 |                       #[cold]
[INFO] [stderr]    |                       ^^^^^^^
[INFO] [stderr] 81 | /                     {
[INFO] [stderr] 82 | |                         thread::yield_now();
[INFO] [stderr] 83 | |                         i = 0;
[INFO] [stderr] 84 | |                     }
[INFO] [stderr]    | |_____________________- not a function
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr] 
[INFO] [stderr] warning: attribute should be applied to a function
[INFO] [stderr]   --> src/mpsc_list_v1.rs:74:17
[INFO] [stderr]    |
[INFO] [stderr] 74 |                 #[cold]
[INFO] [stderr]    |                 ^^^^^^^
[INFO] [stderr] 75 |                 return None;
[INFO] [stderr]    |                 ----------- not a function
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr] 
[INFO] [stderr] warning: attribute should be applied to a function
[INFO] [stderr]    --> src/mpsc_list_v1.rs:110:21
[INFO] [stderr]     |
[INFO] [stderr] 110 |                     #[cold]
[INFO] [stderr]     |                     ^^^^^^^
[INFO] [stderr] 111 |                     let _: Box<Node<T>> = Box::from_raw(node);
[INFO] [stderr]     |                     ------------------------------------------ not a function
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr] 
[INFO] [stderr] warning: attribute should be applied to a function
[INFO] [stderr]    --> src/mpsc_list_v1.rs:205:21
[INFO] [stderr]     |
[INFO] [stderr] 205 |                       #[cold]
[INFO] [stderr]     |                       ^^^^^^^
[INFO] [stderr] 206 | /                     {
[INFO] [stderr] 207 | |                         thread::yield_now();
[INFO] [stderr] 208 | |                         i = 0;
[INFO] [stderr] 209 | |                     }
[INFO] [stderr]     | |_____________________- not a function
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr] 
[INFO] [stderr] warning: attribute should be applied to a function
[INFO] [stderr]    --> src/mpsc_list_v1.rs:302:21
[INFO] [stderr]     |
[INFO] [stderr] 302 |                       #[cold]
[INFO] [stderr]     |                       ^^^^^^^
[INFO] [stderr] 303 | /                     {
[INFO] [stderr] 304 | |                         thread::yield_now();
[INFO] [stderr] 305 | |                         i = 0;
[INFO] [stderr] 306 | |                     }
[INFO] [stderr]     | |_____________________- not a function
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: attribute should be applied to a function
[INFO] [stderr]   --> src/mpsc_list.rs:80:21
[INFO] [stderr]    |
[INFO] [stderr] 80 |                       #[cold]
[INFO] [stderr]    |                       ^^^^^^^
[INFO] [stderr] 81 | /                     {
[INFO] [stderr] 82 | |                         thread::yield_now();
[INFO] [stderr] 83 | |                         i = 0;
[INFO] [stderr] 84 | |                     }
[INFO] [stderr]    | |_____________________- not a function
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr] 
[INFO] [stderr] warning: attribute should be applied to a function
[INFO] [stderr]   --> src/mpsc_list_v1.rs:74:17
[INFO] [stderr]    |
[INFO] [stderr] 74 |                 #[cold]
[INFO] [stderr]    |                 ^^^^^^^
[INFO] [stderr] 75 |                 return None;
[INFO] [stderr]    |                 ----------- not a function
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr] 
[INFO] [stderr] warning: attribute should be applied to a function
[INFO] [stderr]    --> src/mpsc_list_v1.rs:110:21
[INFO] [stderr]     |
[INFO] [stderr] 110 |                     #[cold]
[INFO] [stderr]     |                     ^^^^^^^
[INFO] [stderr] 111 |                     let _: Box<Node<T>> = Box::from_raw(node);
[INFO] [stderr]     |                     ------------------------------------------ not a function
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr] 
[INFO] [stderr] warning: attribute should be applied to a function
[INFO] [stderr]    --> src/mpsc_list_v1.rs:205:21
[INFO] [stderr]     |
[INFO] [stderr] 205 |                       #[cold]
[INFO] [stderr]     |                       ^^^^^^^
[INFO] [stderr] 206 | /                     {
[INFO] [stderr] 207 | |                         thread::yield_now();
[INFO] [stderr] 208 | |                         i = 0;
[INFO] [stderr] 209 | |                     }
[INFO] [stderr]     | |_____________________- not a function
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr] 
[INFO] [stderr] warning: attribute should be applied to a function
[INFO] [stderr]    --> src/mpsc_list_v1.rs:302:21
[INFO] [stderr]     |
[INFO] [stderr] 302 |                       #[cold]
[INFO] [stderr]     |                       ^^^^^^^
[INFO] [stderr] 303 | /                     {
[INFO] [stderr] 304 | |                         thread::yield_now();
[INFO] [stderr] 305 | |                         i = 0;
[INFO] [stderr] 306 | |                     }
[INFO] [stderr]     | |_____________________- not a function
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/may_queue-4c22295e276a7d65
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test block_node::tests::block_node_sanity ... ok
[INFO] [stdout] test mpsc_list_v1::tests::test_queue ... ok
[INFO] [stdout] test spsc::tests::queue_sanity ... ok
[INFO] [stdout] test spsc::tests::bulk_pop_test ... ok
[INFO] [stdout] test mpsc_list_v1::tests::test ... ok
[INFO] [stdout] test mpsc_list::tests::test_queue ... ok
[INFO] [stdout] test mpsc_list::tests::test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests may_queue
[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" "5a6d33a631a1925b29b81e4b1aa2416dba386482c3165b6ea8667b1375b1c46e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a6d33a631a1925b29b81e4b1aa2416dba386482c3165b6ea8667b1375b1c46e", kill_on_drop: false }`
[INFO] [stdout] 5a6d33a631a1925b29b81e4b1aa2416dba386482c3165b6ea8667b1375b1c46e
