[INFO] fetching crate wasmer-clif-fork-frontend 0.52.0...
[INFO] checking wasmer-clif-fork-frontend-0.52.0 against master#73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de for pr-68325
[INFO] extracting crate wasmer-clif-fork-frontend 0.52.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate wasmer-clif-fork-frontend 0.52.0 on toolchain 73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de
[INFO] running `"/workspace/cargo-home/bin/cargo" "+73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate wasmer-clif-fork-frontend 0.52.0
[INFO] finished tweaking crates.io crate wasmer-clif-fork-frontend 0.52.0
[INFO] tweaked toml for crates.io crate wasmer-clif-fork-frontend 0.52.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "+73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] dc98fce24e3c1313f3452d6688fb45907dbb1e524e0ed65f503cbe89fee17433
[INFO] running `"docker" "start" "-a" "dc98fce24e3c1313f3452d6688fb45907dbb1e524e0ed65f503cbe89fee17433"`
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.52.0
[INFO] [stderr]    Compiling cranelift-entity v0.52.0
[INFO] [stderr]    Compiling target-lexicon v0.9.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.9
[INFO] [stderr]     Checking cranelift-bforest v0.52.0
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.52.0
[INFO] [stderr]     Checking thiserror v1.0.9
[INFO] [stderr]    Compiling cranelift-codegen v0.52.0
[INFO] [stderr]     Checking wasmer-clif-fork-frontend v0.52.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: method is never used: `is_empty`
[INFO] [stderr]   --> src/frontend.rs:95:5
[INFO] [stderr]    |
[INFO] [stderr] 95 |     fn is_empty(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_empty`
[INFO] [stderr]    --> src/ssa.rs:191:5
[INFO] [stderr]     |
[INFO] [stderr] 191 |     pub fn is_empty(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_empty`
[INFO] [stderr]   --> src/frontend.rs:95:5
[INFO] [stderr]    |
[INFO] [stderr] 95 |     fn is_empty(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_empty`
[INFO] [stderr]    --> src/ssa.rs:191:5
[INFO] [stderr]     |
[INFO] [stderr] 191 |     pub fn is_empty(&self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 56.32s
[INFO] running `"docker" "inspect" "dc98fce24e3c1313f3452d6688fb45907dbb1e524e0ed65f503cbe89fee17433"`
[INFO] running `"docker" "rm" "-f" "dc98fce24e3c1313f3452d6688fb45907dbb1e524e0ed65f503cbe89fee17433"`
[INFO] [stdout] dc98fce24e3c1313f3452d6688fb45907dbb1e524e0ed65f503cbe89fee17433