[INFO] fetching crate metamorphosis 0.0.0...
[INFO] checking metamorphosis-0.0.0 against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] extracting crate metamorphosis 0.0.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate metamorphosis 0.0.0 on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate metamorphosis 0.0.0
[INFO] finished tweaking crates.io crate metamorphosis 0.0.0
[INFO] tweaked toml for crates.io crate metamorphosis 0.0.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1213bac67188482f091ba00c6e40d9d53048c5cbdf623c199396c493a920b9e1
[INFO] running `Command { std: "docker" "start" "-a" "1213bac67188482f091ba00c6e40d9d53048c5cbdf623c199396c493a920b9e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1213bac67188482f091ba00c6e40d9d53048c5cbdf623c199396c493a920b9e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1213bac67188482f091ba00c6e40d9d53048c5cbdf623c199396c493a920b9e1", kill_on_drop: false }`
[INFO] [stdout] 1213bac67188482f091ba00c6e40d9d53048c5cbdf623c199396c493a920b9e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 24c5f103cef4c160f2bd62a91cc22b0b1a94556a2d610a5b855e3e707aaa17a8
[INFO] running `Command { std: "docker" "start" "-a" "24c5f103cef4c160f2bd62a91cc22b0b1a94556a2d610a5b855e3e707aaa17a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]     Checking cty v0.2.1
[INFO] [stderr]     Checking web_common v0.0.7
[INFO] [stderr]     Checking spin v0.9.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking globals v1.0.2
[INFO] [stderr]     Checking callback v0.5.3
[INFO] [stderr]     Checking cstring v0.0.5
[INFO] [stderr]    Compiling anystring_macro v0.0.1
[INFO] [stderr]     Checking anystring v0.0.2
[INFO] [stderr]     Checking js_ffi v0.2.2
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/js_ffi-0.2.2/src/lib.rs:666:26
[INFO] [stdout]     |
[INFO] [stdout] 666 |     let h = get_callback(id);
[INFO] [stdout]     |                          ^^ expected `f64`, found `u32`
[INFO] [stdout]     |
[INFO] [stdout] help: you can convert a `u32` to an `f64`, producing the floating point representation of the integer
[INFO] [stdout]     |
[INFO] [stdout] 666 |     let h = get_callback(id.into());
[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 E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `js_ffi`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "24c5f103cef4c160f2bd62a91cc22b0b1a94556a2d610a5b855e3e707aaa17a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24c5f103cef4c160f2bd62a91cc22b0b1a94556a2d610a5b855e3e707aaa17a8", kill_on_drop: false }`
[INFO] [stdout] 24c5f103cef4c160f2bd62a91cc22b0b1a94556a2d610a5b855e3e707aaa17a8