[INFO] fetching crate metamorphosis 0.0.0...
[INFO] checking metamorphosis-0.0.0 against master#7f5a42b073dc2bee2aa625052eb066ee07072048 for pr-78991
[INFO] extracting crate metamorphosis 0.0.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate metamorphosis 0.0.0 on toolchain 7f5a42b073dc2bee2aa625052eb066ee07072048
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "read-manifest" "--manifest-path" "Cargo.toml", 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-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "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" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ad38a1fed78eadfad8ce0a335956c503b03c7a5c8e8ba5017514f39dc9ccbb3b
[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" "ad38a1fed78eadfad8ce0a335956c503b03c7a5c8e8ba5017514f39dc9ccbb3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad38a1fed78eadfad8ce0a335956c503b03c7a5c8e8ba5017514f39dc9ccbb3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad38a1fed78eadfad8ce0a335956c503b03c7a5c8e8ba5017514f39dc9ccbb3b", kill_on_drop: false }`
[INFO] [stdout] ad38a1fed78eadfad8ce0a335956c503b03c7a5c8e8ba5017514f39dc9ccbb3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+7f5a42b073dc2bee2aa625052eb066ee07072048" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19f2562a1e281a00086dafbc44343eb63730efe348dd1810d955e2bd60571fa4
[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" "19f2562a1e281a00086dafbc44343eb63730efe348dd1810d955e2bd60571fa4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking cty v0.2.1
[INFO] [stderr]     Checking spin v0.7.0
[INFO] [stderr]     Checking web_common v0.0.7
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking cstring v0.0.4
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking globals v1.0.2
[INFO] [stderr]     Checking callback v0.5.2
[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" "19f2562a1e281a00086dafbc44343eb63730efe348dd1810d955e2bd60571fa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19f2562a1e281a00086dafbc44343eb63730efe348dd1810d955e2bd60571fa4", kill_on_drop: false }`
[INFO] [stdout] 19f2562a1e281a00086dafbc44343eb63730efe348dd1810d955e2bd60571fa4