[INFO] fetching crate swasm-utils 0.6.1...
[INFO] checking swasm-utils-0.6.1 against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] extracting crate swasm-utils 0.6.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate swasm-utils 0.6.1 on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate swasm-utils 0.6.1
[INFO] finished tweaking crates.io crate swasm-utils 0.6.1
[INFO] tweaked toml for crates.io crate swasm-utils 0.6.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "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 wabt v0.2.2
[INFO] [stderr]   Downloaded wabt-sys v0.1.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4789dafa6a03a53c2b74f7667e97533ba710b392d6620aa5174f4990d8305344
[INFO] running `Command { std: "docker" "start" "-a" "4789dafa6a03a53c2b74f7667e97533ba710b392d6620aa5174f4990d8305344", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4789dafa6a03a53c2b74f7667e97533ba710b392d6620aa5174f4990d8305344", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4789dafa6a03a53c2b74f7667e97533ba710b392d6620aa5174f4990d8305344", kill_on_drop: false }`
[INFO] [stdout] 4789dafa6a03a53c2b74f7667e97533ba710b392d6620aa5174f4990d8305344
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ff8d4b3bae8644c2e05ebba34458e915d28a83aee8af5f2f3b3241dd0d6bd059
[INFO] running `Command { std: "docker" "start" "-a" "ff8d4b3bae8644c2e05ebba34458e915d28a83aee8af5f2f3b3241dd0d6bd059", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.68
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]    Compiling libc v0.2.102
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking swasm v0.31.3
[INFO] [stderr]    Compiling wabt-sys v0.1.4
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking swasm-utils v0.6.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/stack_height/mod.rs:236:9
[INFO] [stdout]     |
[INFO] [stdout] 236 |                 let mut opcodes = func_body.code_mut();
[INFO] [stdout]     |                     ----^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[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-1.0.76/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=4fd4d14e25189a9f -C extra-filename=-4fd4d14e25189a9f --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-fc6b92fa46147edf.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-e1e335b8b96ed529.rmeta --extern unicode_xid=/opt/rustwide/target/debug/deps/libunicode_xid-3c8a88541efd8c80.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" "ff8d4b3bae8644c2e05ebba34458e915d28a83aee8af5f2f3b3241dd0d6bd059", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff8d4b3bae8644c2e05ebba34458e915d28a83aee8af5f2f3b3241dd0d6bd059", kill_on_drop: false }`
[INFO] [stdout] ff8d4b3bae8644c2e05ebba34458e915d28a83aee8af5f2f3b3241dd0d6bd059