[INFO] cloning repository https://github.com/gelfand/lockfree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gelfand/lockfree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgelfand%2Flockfree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgelfand%2Flockfree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1344256a9f29549fdf6f32594a983ffbd3eebe1b
[INFO] checking gelfand/lockfree against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgelfand%2Flockfree" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/gelfand/lockfree
[INFO] finished tweaking git repo https://github.com/gelfand/lockfree
[INFO] tweaked toml for git repo https://github.com/gelfand/lockfree written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/gelfand/lockfree on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/gelfand/lockfree 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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2f5f0d849f8cdb035ea96c10cf03b9aa5b9000b3b06e6c5ddbae687c5bded923
[INFO] running `Command { std: "docker" "start" "-a" "2f5f0d849f8cdb035ea96c10cf03b9aa5b9000b3b06e6c5ddbae687c5bded923", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f5f0d849f8cdb035ea96c10cf03b9aa5b9000b3b06e6c5ddbae687c5bded923", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f5f0d849f8cdb035ea96c10cf03b9aa5b9000b3b06e6c5ddbae687c5bded923", kill_on_drop: false }`
[INFO] [stdout] 2f5f0d849f8cdb035ea96c10cf03b9aa5b9000b3b06e6c5ddbae687c5bded923
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 438d4760506fc3948e6d984c97f7d502c0f3b022adc3c59c31d638a7aabf90ea
[INFO] running `Command { std: "docker" "start" "-a" "438d4760506fc3948e6d984c97f7d502c0f3b022adc3c59c31d638a7aabf90ea", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8 (https://github.com/crossbeam-rs/crossbeam#df9b0c90)
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8 (https://github.com/crossbeam-rs/crossbeam#df9b0c90)
[INFO] [stderr]    Compiling crossbeam-queue v0.3.5 (https://github.com/crossbeam-rs/crossbeam#df9b0c90)
[INFO] [stderr]     Checking crossbeam-channel v0.5.4 (https://github.com/crossbeam-rs/crossbeam#df9b0c90)
[INFO] [stderr]     Checking crossbeam-deque v0.8.1 (https://github.com/crossbeam-rs/crossbeam#df9b0c90)
[INFO] [stderr]     Checking crossbeam v0.8.1 (https://github.com/crossbeam-rs/crossbeam#df9b0c90)
[INFO] [stderr]     Checking lockfreed v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0635]: unknown feature `const_default_impls`
[INFO] [stdout]  --> src/lib.rs:3:60
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![cfg_attr(feature = "nightly", feature(const_trait_impl, const_default_impls))]
[INFO] [stdout]   |                                                            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `const_default_impls`
[INFO] [stdout]  --> src/lib.rs:3:60
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![cfg_attr(feature = "nightly", feature(const_trait_impl, const_default_impls))]
[INFO] [stdout]   |                                                            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0015]: cannot call non-const associated function `<AtomicUsize as Default>::default` in constant functions
[INFO] [stdout]   --> src/stack.rs:31:19
[INFO] [stdout]    |
[INFO] [stdout] 31 |             size: Default::default(),
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0015, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0015`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lockfreed` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0015]: cannot call non-const associated function `<AtomicUsize as Default>::default` in constant functions
[INFO] [stdout]   --> src/stack.rs:31:19
[INFO] [stdout]    |
[INFO] [stdout] 31 |             size: Default::default(),
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0015, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0015`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lockfreed` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "438d4760506fc3948e6d984c97f7d502c0f3b022adc3c59c31d638a7aabf90ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "438d4760506fc3948e6d984c97f7d502c0f3b022adc3c59c31d638a7aabf90ea", kill_on_drop: false }`
[INFO] [stdout] 438d4760506fc3948e6d984c97f7d502c0f3b022adc3c59c31d638a7aabf90ea