[INFO] fetching crate twasmi 0.6.2...
[INFO] checking twasmi-0.6.2 against try#b0d0ea232bdae12fa8da8491a91ae1db029990ef for pr-84037
[INFO] extracting crate twasmi 0.6.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate twasmi 0.6.2 on toolchain b0d0ea232bdae12fa8da8491a91ae1db029990ef
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2/source/.cargo/config
[INFO] started tweaking crates.io crate twasmi 0.6.2
[INFO] finished tweaking crates.io crate twasmi 0.6.2
[INFO] tweaked toml for crates.io crate twasmi 0.6.2 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate twasmi 0.6.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded errno v0.2.7
[INFO] [stderr]   Downloaded errno-dragonfly v0.1.1
[INFO] [stderr]   Downloaded downcast-rs v1.2.0
[INFO] [stderr]   Downloaded memory_units v0.3.0
[INFO] [stderr]   Downloaded wabt v0.9.1
[INFO] [stderr]   Downloaded twasmi-validation v0.3.0
[INFO] [stderr]   Downloaded libc v0.2.87
[INFO] [stderr]   Downloaded wabt-sys v0.6.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8d619e6d1cfb41961dceeaf3e19388bd4092eaba36e229261d481ec424416fc2
[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" "8d619e6d1cfb41961dceeaf3e19388bd4092eaba36e229261d481ec424416fc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d619e6d1cfb41961dceeaf3e19388bd4092eaba36e229261d481ec424416fc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d619e6d1cfb41961dceeaf3e19388bd4092eaba36e229261d481ec424416fc2", kill_on_drop: false }`
[INFO] [stdout] 8d619e6d1cfb41961dceeaf3e19388bd4092eaba36e229261d481ec424416fc2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0da9d8672c2f991650c3c73ab26f66453629d7401bd1477f5f633a6382299cac
[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" "0da9d8672c2f991650c3c73ab26f66453629d7401bd1477f5f633a6382299cac", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling libc v0.2.87
[INFO] [stderr]     Checking tetsy-wasm v0.41.0
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]     Checking assert_matches v1.5.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]     Checking serde v1.0.123
[INFO] [stderr]    Compiling wabt-sys v0.6.1
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking twasmi-validation v0.3.0
[INFO] [stderr]     Checking twasmi v0.6.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr] error: could not compile `syn`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name syn --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syn-1.0.60/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="quote"' -C metadata=3b290833cb3d4018 -C extra-filename=-3b290833cb3d4018 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-68d422dfc8864dc7.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-cfc781dd86a6c62d.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-4182131ee577b5da.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "0da9d8672c2f991650c3c73ab26f66453629d7401bd1477f5f633a6382299cac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0da9d8672c2f991650c3c73ab26f66453629d7401bd1477f5f633a6382299cac", kill_on_drop: false }`
[INFO] [stdout] 0da9d8672c2f991650c3c73ab26f66453629d7401bd1477f5f633a6382299cac