[INFO] fetching crate web-extensions 0.1.0...
[INFO] testing web-extensions-0.1.0 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate web-extensions 0.1.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate web-extensions 0.1.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate web-extensions 0.1.0
[INFO] finished tweaking crates.io crate web-extensions 0.1.0
[INFO] tweaked toml for crates.io crate web-extensions 0.1.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] add9437ff43d832aba8a7c9c2e222b3f7c7f9a3457a69dca47f324a1d31a86d0
[INFO] running `Command { std: "docker" "start" "-a" "add9437ff43d832aba8a7c9c2e222b3f7c7f9a3457a69dca47f324a1d31a86d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "add9437ff43d832aba8a7c9c2e222b3f7c7f9a3457a69dca47f324a1d31a86d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "add9437ff43d832aba8a7c9c2e222b3f7c7f9a3457a69dca47f324a1d31a86d0", kill_on_drop: false }`
[INFO] [stdout] add9437ff43d832aba8a7c9c2e222b3f7c7f9a3457a69dca47f324a1d31a86d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c311db562700e591b8b482ad9768705744b5abdb95ec10bdeb6ba505874d9aff
[INFO] running `Command { std: "docker" "start" "-a" "c311db562700e591b8b482ad9768705744b5abdb95ec10bdeb6ba505874d9aff", kill_on_drop: false }`
[INFO] [stderr]    Compiling wasm-bindgen v0.2.75
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/wasm-bindgen-0.2.75/src/lib.rs:11:34
[INFO] [stdout]    |
[INFO] [stdout] 11 | #![cfg_attr(feature = "nightly", feature(unsize))]
[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-bindgen` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "c311db562700e591b8b482ad9768705744b5abdb95ec10bdeb6ba505874d9aff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c311db562700e591b8b482ad9768705744b5abdb95ec10bdeb6ba505874d9aff", kill_on_drop: false }`
[INFO] [stdout] c311db562700e591b8b482ad9768705744b5abdb95ec10bdeb6ba505874d9aff
