[INFO] fetching crate metamorphosis 0.0.0...
[INFO] testing metamorphosis-0.0.0 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate metamorphosis 0.0.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate metamorphosis 0.0.0 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded globals v1.0.2
[INFO] [stderr]   Downloaded cstring v0.0.5
[INFO] [stderr]   Downloaded callback v0.5.3
[INFO] [stderr]   Downloaded anystring v0.0.2
[INFO] [stderr]   Downloaded anystring_macro v0.0.1
[INFO] [stderr]   Downloaded web_common v0.0.7
[INFO] [stderr]   Downloaded js_ffi v0.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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] a53f672f2039fd749fe8ad719147b0c031bdd12a0011684d53e1afa5a118397b
[INFO] running `Command { std: "docker" "start" "-a" "a53f672f2039fd749fe8ad719147b0c031bdd12a0011684d53e1afa5a118397b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a53f672f2039fd749fe8ad719147b0c031bdd12a0011684d53e1afa5a118397b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a53f672f2039fd749fe8ad719147b0c031bdd12a0011684d53e1afa5a118397b", kill_on_drop: false }`
[INFO] [stdout] a53f672f2039fd749fe8ad719147b0c031bdd12a0011684d53e1afa5a118397b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 366dddd25fd6f32c09d8be97ef4fc740c62f7aefa9b5beb1c880098af4ad2d01
[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" "366dddd25fd6f32c09d8be97ef4fc740c62f7aefa9b5beb1c880098af4ad2d01", kill_on_drop: false }`
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling cty v0.2.2
[INFO] [stderr]    Compiling web_common v0.0.7
[INFO] [stderr]    Compiling spin v0.9.2
[INFO] [stderr]    Compiling anystring_macro v0.0.1
[INFO] [stderr]    Compiling cstring v0.0.5
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling globals v1.0.2
[INFO] [stderr]    Compiling callback v0.5.3
[INFO] [stderr]    Compiling anystring v0.0.2
[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` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "366dddd25fd6f32c09d8be97ef4fc740c62f7aefa9b5beb1c880098af4ad2d01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "366dddd25fd6f32c09d8be97ef4fc740c62f7aefa9b5beb1c880098af4ad2d01", kill_on_drop: false }`
[INFO] [stdout] 366dddd25fd6f32c09d8be97ef4fc740c62f7aefa9b5beb1c880098af4ad2d01