[INFO] fetching crate specs_transform 0.5.0...
[INFO] testing specs_transform-0.5.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate specs_transform 0.5.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate specs_transform 0.5.0 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] started tweaking crates.io crate specs_transform 0.5.0
[INFO] finished tweaking crates.io crate specs_transform 0.5.0
[INFO] tweaked toml for crates.io crate specs_transform 0.5.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded tynm v0.1.6
[INFO] [stderr]   Downloaded shred-derive v0.6.3
[INFO] [stderr]   Downloaded mat32 v0.2.1
[INFO] [stderr]   Downloaded cast_trait v0.1.2
[INFO] [stderr]   Downloaded vec3 v0.2.1
[INFO] [stderr]   Downloaded vec2 v0.2.1
[INFO] [stderr]   Downloaded type-name v0.1.0
[INFO] [stderr]   Downloaded shred v0.12.0
[INFO] [stderr]   Downloaded specs v0.17.0
[INFO] [stderr]   Downloaded specs_bundler v0.6.0
[INFO] [stderr]   Downloaded specs_scene_graph v0.3.0
[INFO] [stderr]   Downloaded mat4 v0.2.1
[INFO] [stderr]   Downloaded shred v0.9.4
[INFO] [stderr]   Downloaded specs v0.15.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 89803c0b028072b10cc55455f83bef5ba5623abe74b25bffa74dab4c1b597d52
[INFO] running `Command { std: "docker" "start" "-a" "89803c0b028072b10cc55455f83bef5ba5623abe74b25bffa74dab4c1b597d52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89803c0b028072b10cc55455f83bef5ba5623abe74b25bffa74dab4c1b597d52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89803c0b028072b10cc55455f83bef5ba5623abe74b25bffa74dab4c1b597d52", kill_on_drop: false }`
[INFO] [stdout] 89803c0b028072b10cc55455f83bef5ba5623abe74b25bffa74dab4c1b597d52
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 02be4a1eb063f2f1146ff485097c4a56df664f5b09aa867d53b24c5bd25c7e06
[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" "02be4a1eb063f2f1146ff485097c4a56df664f5b09aa867d53b24c5bd25c7e06", kill_on_drop: false }`
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling mopa v0.2.2
[INFO] [stderr]    Compiling crossbeam-queue v0.3.2
[INFO] [stderr]    Compiling atom v0.3.6
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling shrev v1.1.1
[INFO] [stderr]    Compiling cast_trait v0.1.2
[INFO] [stderr]    Compiling tuple_utils v0.3.0
[INFO] [stderr]    Compiling type-name v0.1.0
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling ahash v0.7.4
[INFO] [stderr]    Compiling hashbrown v0.6.3
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling shred-derive v0.6.3
[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/type-name-0.1.0/src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(core_intrinsics)]
[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 `type-name` 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" "02be4a1eb063f2f1146ff485097c4a56df664f5b09aa867d53b24c5bd25c7e06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02be4a1eb063f2f1146ff485097c4a56df664f5b09aa867d53b24c5bd25c7e06", kill_on_drop: false }`
[INFO] [stdout] 02be4a1eb063f2f1146ff485097c4a56df664f5b09aa867d53b24c5bd25c7e06