[INFO] updating cached repository https://github.com/m-dahl/guard_extraction
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/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] fe5d6443c61510ef669ca39e0cec3634006d342c
[INFO] checking m-dahl/guard_extraction against try#13f916f63bc6575d5ff1f989237dfabe88981368 for pr-69880
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fm-dahl%2Fguard_extraction" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/m-dahl/guard_extraction on toolchain 13f916f63bc6575d5ff1f989237dfabe88981368
[INFO] running `"/workspace/cargo-home/bin/cargo" "+13f916f63bc6575d5ff1f989237dfabe88981368" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/m-dahl/guard_extraction
[INFO] finished tweaking git repo https://github.com/m-dahl/guard_extraction
[INFO] tweaked toml for git repo https://github.com/m-dahl/guard_extraction written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+13f916f63bc6575d5ff1f989237dfabe88981368" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/m-dahl/buddy-rs`
[INFO] [stderr]     Updating git repository `https://github.com/m-dahl/buddy-sys`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+13f916f63bc6575d5ff1f989237dfabe88981368" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+13f916f63bc6575d5ff1f989237dfabe88981368" "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] b715c3a744e4209bbced4c7b459b8d578cdfa206649a4e4f15b6afb3280c9845
[INFO] running `"docker" "start" "-a" "b715c3a744e4209bbced4c7b459b8d578cdfa206649a4e4f15b6afb3280c9845"`
[INFO] [stderr]    Compiling bindgen v0.52.0
[INFO] [stderr]    Compiling buddy-sys v0.1.0 (https://github.com/m-dahl/buddy-sys#009c3bd2)
[INFO] [stderr]     Checking buddy-rs v0.1.0 (https://github.com/m-dahl/buddy-rs#27979f19)
[INFO] [stderr]     Checking guard_extraction v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/bdd_context.rs:668:26
[INFO] [stderr]     |
[INFO] [stderr] 668 |     fn trans2(&mut self, name: &str, guard: &Ex, actions: &[Ac]) {
[INFO] [stderr]     |                          ^^^^ help: consider prefixing with an underscore: `_name`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/bdd_context.rs:668:26
[INFO] [stderr]     |
[INFO] [stderr] 668 |     fn trans2(&mut self, name: &str, guard: &Ex, actions: &[Ac]) {
[INFO] [stderr]     |                          ^^^^ help: consider prefixing with an underscore: `_name`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `var`
[INFO] [stderr]    --> src/bdd_context.rs:195:5
[INFO] [stderr]     |
[INFO] [stderr] 195 |     var: usize,
[INFO] [stderr]     |     ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `clauses_from_bdd`
[INFO] [stderr]    --> src/bdd_context.rs:742:5
[INFO] [stderr]     |
[INFO] [stderr] 742 |     fn clauses_from_bdd(&self, f: &BDD) -> Vec<Clause> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `var`
[INFO] [stderr]    --> src/bdd_context.rs:195:5
[INFO] [stderr]     |
[INFO] [stderr] 195 |     var: usize,
[INFO] [stderr]     |     ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `clauses_from_bdd`
[INFO] [stderr]    --> src/bdd_context.rs:742:5
[INFO] [stderr]     |
[INFO] [stderr] 742 |     fn clauses_from_bdd(&self, f: &BDD) -> Vec<Clause> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.94s
[INFO] running `"docker" "inspect" "b715c3a744e4209bbced4c7b459b8d578cdfa206649a4e4f15b6afb3280c9845"`
[INFO] running `"docker" "rm" "-f" "b715c3a744e4209bbced4c7b459b8d578cdfa206649a4e4f15b6afb3280c9845"`
[INFO] [stdout] b715c3a744e4209bbced4c7b459b8d578cdfa206649a4e4f15b6afb3280c9845