[INFO] cloning repository https://github.com/LU15W1R7H/picot-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LU15W1R7H/picot-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLU15W1R7H%2Fpicot-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLU15W1R7H%2Fpicot-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f3bd2ba5e0a7dfaea2c0e81d3244dd595f457d23
[INFO] checking LU15W1R7H/picot-rs against 1.55.0 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLU15W1R7H%2Fpicot-rs" "/workspace/builds/worker-60/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-60/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LU15W1R7H/picot-rs on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-60/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/LU15W1R7H/picot-rs
[INFO] finished tweaking git repo https://github.com/LU15W1R7H/picot-rs
[INFO] tweaked toml for git repo https://github.com/LU15W1R7H/picot-rs written to /workspace/builds/worker-60/source/Cargo.toml
[INFO] crate git repo https://github.com/LU15W1R7H/picot-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 76d6af1073a067d58551a94f2a5b7421f5145cf1f4fa80f452c61839a290d929
[INFO] running `Command { std: "docker" "start" "-a" "76d6af1073a067d58551a94f2a5b7421f5145cf1f4fa80f452c61839a290d929", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "76d6af1073a067d58551a94f2a5b7421f5145cf1f4fa80f452c61839a290d929", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76d6af1073a067d58551a94f2a5b7421f5145cf1f4fa80f452c61839a290d929", kill_on_drop: false }`
[INFO] [stdout] 76d6af1073a067d58551a94f2a5b7421f5145cf1f4fa80f452c61839a290d929
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1353f290338ff0d99b956f5d5cfa8bbf3d4857be7f22e1cfbfe8d59ed28df016
[INFO] running `Command { std: "docker" "start" "-a" "1353f290338ff0d99b956f5d5cfa8bbf3d4857be7f22e1cfbfe8d59ed28df016", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling cortex-m v0.7.3
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]    Compiling cortex-m-rt v0.7.0
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling az v1.1.2
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling rp2040-pac v0.1.5
[INFO] [stderr]    Compiling debug-helper v0.3.12
[INFO] [stderr]    Compiling heapless v0.7.7
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.7
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking arrayvec v0.7.1
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking display-interface v0.4.1
[INFO] [stderr]    Compiling paste v1.0.5
[INFO] [stderr]    Compiling cortex-m v0.6.7
[INFO] [stderr]     Checking micromath v1.1.1
[INFO] [stderr]     Checking byte-slice-cast v0.3.5
[INFO] [stderr]     Checking bytemuck v1.7.2
[INFO] [stderr]    Compiling palette v0.6.0
[INFO] [stderr]     Checking usb-device v0.2.8
[INFO] [stderr]    Compiling picot-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking linked_list_allocator v0.8.11
[INFO] [stderr]     Checking self_cell v0.9.2
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/linked_list_allocator-0.8.11/src/lib.rs:1:41
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(feature = "const_mut_refs", feature(const_mut_refs))]
[INFO] [stdout]   |                                         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `linked_list_allocator` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "1353f290338ff0d99b956f5d5cfa8bbf3d4857be7f22e1cfbfe8d59ed28df016", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1353f290338ff0d99b956f5d5cfa8bbf3d4857be7f22e1cfbfe8d59ed28df016", kill_on_drop: false }`
[INFO] [stdout] 1353f290338ff0d99b956f5d5cfa8bbf3d4857be7f22e1cfbfe8d59ed28df016
