[INFO] fetching crate wasm-reader 0.2.0...
[INFO] testing wasm-reader-0.2.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate wasm-reader 0.2.0 into /workspace/builds/worker-16/source
[INFO] validating manifest of crates.io crate wasm-reader 0.2.0 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wasm-reader 0.2.0
[INFO] finished tweaking crates.io crate wasm-reader 0.2.0
[INFO] tweaked toml for crates.io crate wasm-reader 0.2.0 written to /workspace/builds/worker-16/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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" "+1.60.0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded derive_utils v0.9.1
[INFO] [stderr]   Downloaded auto_enums v0.7.12
[INFO] [stderr]   Downloaded derive_utils v0.11.2
[INFO] [stderr]   Downloaded auto_enums_derive v0.7.12
[INFO] [stderr]   Downloaded quickcheck_macros v0.9.1
[INFO] [stderr]   Downloaded quickcheck v0.9.2
[INFO] [stderr]   Downloaded auto_enums_core v0.7.12
[INFO] [stderr]   Downloaded derive-parse v0.1.0
[INFO] [stderr]   Downloaded wasm-reader-traits v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 128f3dbcae7fd3eaeed0fb52a378957047e31d6e4cd6b189e75932a8dee52f96
[INFO] running `Command { std: "docker" "start" "-a" "128f3dbcae7fd3eaeed0fb52a378957047e31d6e4cd6b189e75932a8dee52f96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "128f3dbcae7fd3eaeed0fb52a378957047e31d6e4cd6b189e75932a8dee52f96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "128f3dbcae7fd3eaeed0fb52a378957047e31d6e4cd6b189e75932a8dee52f96", kill_on_drop: false }`
[INFO] [stdout] 128f3dbcae7fd3eaeed0fb52a378957047e31d6e4cd6b189e75932a8dee52f96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 05d2513c1aa36d02defe2cb1e2de6d6547a90ae299d610306f6e94f672285ff1
[INFO] running `Command { std: "docker" "start" "-a" "05d2513c1aa36d02defe2cb1e2de6d6547a90ae299d610306f6e94f672285ff1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.123
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling frunk_core v0.3.2
[INFO] [stderr]    Compiling wasmparser v0.51.4
[INFO] [stderr]    Compiling auto_enums_derive v0.7.12
[INFO] [stderr]    Compiling object v0.27.1
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling derive_utils v0.11.2
[INFO] [stderr]    Compiling auto_enums_core v0.7.12
[INFO] [stderr]    Compiling derive_utils v0.9.1
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]    Compiling derive-parse v0.1.0
[INFO] [stderr]    Compiling auto_enums v0.7.12
[INFO] [stderr]    Compiling backtrace v0.3.64
[INFO] [stderr]    Compiling wasm-reader-traits v0.1.1
[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/wasm-reader-traits-0.1.1/src/lib.rs:1:34
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(feature = "nightly", feature(specialization))]
[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 `wasm-reader-traits` 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" "05d2513c1aa36d02defe2cb1e2de6d6547a90ae299d610306f6e94f672285ff1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05d2513c1aa36d02defe2cb1e2de6d6547a90ae299d610306f6e94f672285ff1", kill_on_drop: false }`
[INFO] [stdout] 05d2513c1aa36d02defe2cb1e2de6d6547a90ae299d610306f6e94f672285ff1