[INFO] fetching crate metamorphosis 0.0.0...
[INFO] testing metamorphosis-0.0.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate metamorphosis 0.0.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate metamorphosis 0.0.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "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-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ea0c2aa9d597daa8379ab71e74827b67e369422182cd028e3163c73781549a52
[INFO] running `Command { std: "docker" "start" "-a" "ea0c2aa9d597daa8379ab71e74827b67e369422182cd028e3163c73781549a52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ea0c2aa9d597daa8379ab71e74827b67e369422182cd028e3163c73781549a52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea0c2aa9d597daa8379ab71e74827b67e369422182cd028e3163c73781549a52", kill_on_drop: false }`
[INFO] [stdout] ea0c2aa9d597daa8379ab71e74827b67e369422182cd028e3163c73781549a52
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] efb98e27fec5e3a8bc4fedf80bdcb66fce21cffa9414f72ab2e9e221323320e8
[INFO] running `Command { std: "docker" "start" "-a" "efb98e27fec5e3a8bc4fedf80bdcb66fce21cffa9414f72ab2e9e221323320e8", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling spin v0.7.0
[INFO] [stderr]    Compiling cty v0.2.1
[INFO] [stderr]    Compiling web_common v0.0.7
[INFO] [stderr]    Compiling anystring_macro v0.0.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling globals v1.0.2
[INFO] [stderr]    Compiling callback v0.5.2
[INFO] [stderr]    Compiling anystring v0.0.2
[INFO] [stderr]    Compiling cstring v0.0.5
[INFO] [stderr]    Compiling 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" "efb98e27fec5e3a8bc4fedf80bdcb66fce21cffa9414f72ab2e9e221323320e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efb98e27fec5e3a8bc4fedf80bdcb66fce21cffa9414f72ab2e9e221323320e8", kill_on_drop: false }`
[INFO] [stdout] efb98e27fec5e3a8bc4fedf80bdcb66fce21cffa9414f72ab2e9e221323320e8