[INFO] cloning repository https://github.com/eddiechristian/RustCircularQ
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/eddiechristian/RustCircularQ" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feddiechristian%2FRustCircularQ", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feddiechristian%2FRustCircularQ'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4f2c6139a3e9179f2b931cd8e53d3546189db1c6
[INFO] checking eddiechristian/RustCircularQ against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feddiechristian%2FRustCircularQ" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-6-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/eddiechristian/RustCircularQ
[INFO] finished tweaking git repo https://github.com/eddiechristian/RustCircularQ
[INFO] tweaked toml for git repo https://github.com/eddiechristian/RustCircularQ written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/eddiechristian/RustCircularQ on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/eddiechristian/RustCircularQ already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9837dc08fa2e88c9f31876a49ac83c8f8a8f0728522d1abfa28c04e49c473e71
[INFO] running `Command { std: "docker" "start" "-a" "9837dc08fa2e88c9f31876a49ac83c8f8a8f0728522d1abfa28c04e49c473e71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9837dc08fa2e88c9f31876a49ac83c8f8a8f0728522d1abfa28c04e49c473e71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9837dc08fa2e88c9f31876a49ac83c8f8a8f0728522d1abfa28c04e49c473e71", kill_on_drop: false }`
[INFO] [stdout] 9837dc08fa2e88c9f31876a49ac83c8f8a8f0728522d1abfa28c04e49c473e71
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b934dccaccfee019be7da2efcdcf4bd5a7cd92de1b99029a1e44c9416ca82ef
[INFO] running `Command { std: "docker" "start" "-a" "4b934dccaccfee019be7da2efcdcf4bd5a7cd92de1b99029a1e44c9416ca82ef", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking crossbeam-channel v0.5.15
[INFO] [stderr]     Checking crossbeam-queue v0.3.12
[INFO] [stderr]     Checking crossbeam-deque v0.8.6
[INFO] [stderr]     Checking crossbeam v0.8.4
[INFO] [stderr]     Checking circular_q v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(allocator_api)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(allocator_api)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/circular_queue.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let mut owned_head_addr =  Owned::new(t.get_end_addr());
[INFO] [stdout]    |         ----^^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/circular_queue.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut owned_end_addr =  Owned::new(t.get_start_addr());
[INFO] [stdout]    |         ----^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/circular_queue.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let mut owned_head_addr =  Owned::new(t.get_end_addr());
[INFO] [stdout]    |         ----^^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/circular_queue.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut owned_end_addr =  Owned::new(t.get_start_addr());
[INFO] [stdout]    |         ----^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/circular_queue.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let mut new = Owned::new(CircQNode {
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tail_next_shared`
[INFO] [stdout]   --> src/circular_queue.rs:75:11
[INFO] [stdout]    |
[INFO] [stdout] 75 |       let tail_next_shared = tail.next.load(Relaxed, &guard);
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tail_next_shared`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/circular_queue.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let mut new = Owned::new(CircQNode {
[INFO] [stdout]    |         ----^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tail_next_shared`
[INFO] [stdout]   --> src/circular_queue.rs:75:11
[INFO] [stdout]    |
[INFO] [stdout] 75 |       let tail_next_shared = tail.next.load(Relaxed, &guard);
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tail_next_shared`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/circular_queue.rs:115:11
[INFO] [stdout]     |
[INFO] [stdout] 115 |       let mut current_next = tail.next.clone();
[INFO] [stdout]     |           ----^^^^^^^^^^^^
[INFO] [stdout]     |           |
[INFO] [stdout]     |           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/circular_queue.rs:115:11
[INFO] [stdout]     |
[INFO] [stdout] 115 |       let mut current_next = tail.next.clone();
[INFO] [stdout]     |           ----^^^^^^^^^^^^
[INFO] [stdout]     |           |
[INFO] [stdout]     |           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `circular_q` (lib test) due to 1 previous error; 5 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `circular_q` (lib) due to 1 previous error; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "4b934dccaccfee019be7da2efcdcf4bd5a7cd92de1b99029a1e44c9416ca82ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b934dccaccfee019be7da2efcdcf4bd5a7cd92de1b99029a1e44c9416ca82ef", kill_on_drop: false }`
[INFO] [stdout] 4b934dccaccfee019be7da2efcdcf4bd5a7cd92de1b99029a1e44c9416ca82ef
