[INFO] fetching crate include_js_core 0.1.2...
[INFO] testing include_js_core-0.1.2 against 1.76.0 for beta-1.77-1
[INFO] extracting crate include_js_core 0.1.2 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate include_js_core 0.1.2 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate include_js_core 0.1.2
[INFO] finished tweaking crates.io crate include_js_core 0.1.2
[INFO] tweaked toml for crates.io crate include_js_core 0.1.2 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unicode-general-category v0.3.0
[INFO] [stderr]   Downloaded boa_unicode v0.11.0
[INFO] [stderr]   Downloaded gc_derive v0.3.6
[INFO] [stderr]   Downloaded gc v0.3.6
[INFO] [stderr]   Downloaded regress v0.2.0
[INFO] [stderr]   Downloaded Boa v0.11.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0ebf8b233e08e71529d447c5fe9989870d44fc2ad9be9e3267a56a353a53cc50
[INFO] running `Command { std: "docker" "start" "-a" "0ebf8b233e08e71529d447c5fe9989870d44fc2ad9be9e3267a56a353a53cc50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ebf8b233e08e71529d447c5fe9989870d44fc2ad9be9e3267a56a353a53cc50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ebf8b233e08e71529d447c5fe9989870d44fc2ad9be9e3267a56a353a53cc50", kill_on_drop: false }`
[INFO] [stdout] 0ebf8b233e08e71529d447c5fe9989870d44fc2ad9be9e3267a56a353a53cc50
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 21929c818ac275932a0bbbd2f62ca565b3cb793702172da6b8cf03f261f36551
[INFO] running `Command { std: "docker" "start" "-a" "21929c818ac275932a0bbbd2f62ca565b3cb793702172da6b8cf03f261f36551", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling unicode-segmentation v1.11.0
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling unicode-general-category v0.3.0
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling num-bigint v0.3.3
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling ryu-js v0.2.2
[INFO] [stderr]    Compiling boa_unicode v0.11.0
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling chrono v0.4.34
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling serde_derive v1.0.196
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling gc_derive v0.3.6
[INFO] [stderr]    Compiling gc v0.3.6
[INFO] [stderr]    Compiling structopt v0.3.26
[INFO] [stderr]    Compiling regress v0.2.0
[INFO] [stderr]    Compiling serde v1.0.196
[INFO] [stderr]    Compiling serde_json v1.0.113
[INFO] [stderr]    Compiling Boa v0.11.0
[INFO] [stderr]    Compiling include_js_core v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_fn_transmute)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `const_fn_transmute` has been stable since `1.56.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `const_fn_transmute` has been stable since 1.56.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_fn_transmute)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `include_js_core` (lib) due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "21929c818ac275932a0bbbd2f62ca565b3cb793702172da6b8cf03f261f36551", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21929c818ac275932a0bbbd2f62ca565b3cb793702172da6b8cf03f261f36551", kill_on_drop: false }`
[INFO] [stdout] 21929c818ac275932a0bbbd2f62ca565b3cb793702172da6b8cf03f261f36551
