[INFO] updating cached repository https://github.com/rikshot/testbed
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6571290e1305618cfcff8ef46e049e4a48d15231
[INFO] checking rikshot/testbed against try#00e4530a79c42b21a6ca2ac1edb597c90d21f89f for pr-64672
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Frikshot%2Ftestbed" "work/builds/worker-2/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rikshot/testbed on toolchain 00e4530a79c42b21a6ca2ac1edb597c90d21f89f
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/rikshot/testbed
[INFO] finished tweaking git repo https://github.com/rikshot/testbed
[INFO] tweaked toml for git repo https://github.com/rikshot/testbed written to work/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/rikshot/testbed already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c3730aadfb86e8ab7763fb1b8f87a85b7d48ec0a3111a88944918f7ce6578dfa
[INFO] running `"docker" "start" "-a" "c3730aadfb86e8ab7763fb1b8f87a85b7d48ec0a3111a88944918f7ce6578dfa"`
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.40
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling cfg-if v0.1.7
[INFO] [stderr]    Compiling bumpalo v2.2.2
[INFO] [stderr]    Compiling wasm-bindgen v0.2.40
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.40
[INFO] [stderr]    Compiling serde_derive v1.0.89
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.40
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.40
[INFO] [stderr]     Checking console_error_panic_hook v0.1.6
[INFO] [stderr] error[E0658]: extern types are experimental
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/console_error_panic_hook-0.1.6/src/lib.rs:83:13
[INFO] [stderr]    |
[INFO] [stderr] 83 |             type Error;
[INFO] [stderr]    |             ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/43467
[INFO] [stderr]    = help: add `#![feature(extern_types)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0658`.
[INFO] [stderr] error: could not compile `console_error_panic_hook`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "c3730aadfb86e8ab7763fb1b8f87a85b7d48ec0a3111a88944918f7ce6578dfa"`
[INFO] running `"docker" "rm" "-f" "c3730aadfb86e8ab7763fb1b8f87a85b7d48ec0a3111a88944918f7ce6578dfa"`
[INFO] [stdout] c3730aadfb86e8ab7763fb1b8f87a85b7d48ec0a3111a88944918f7ce6578dfa