[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] 00c28c7e9252dfa36155e7684e765285dccaec1f
[INFO] checking m-dahl/guard_extraction against master#73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de for pr-68325
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fm-dahl%2Fguard_extraction" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/m-dahl/guard_extraction on toolchain 73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de
[INFO] running `"/workspace/cargo-home/bin/cargo" "+73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de" "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-10/source/Cargo.toml
[INFO] crate git repo https://github.com/m-dahl/guard_extraction already has a lockfile, it will not be regenerated
[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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 7a980f0bd95f46b1e444ceeabdb15f0bcd73f0031473ebec5a21b500abd4fb05
[INFO] running `"docker" "start" "-a" "7a980f0bd95f46b1e444ceeabdb15f0bcd73f0031473ebec5a21b500abd4fb05"`
[INFO] [stderr]     Checking smallvec v0.1.8
[INFO] [stderr]     Checking itertools v0.8.1
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking boolean_expression v0.3.9 (https://github.com/m-dahl/boolean_expression.git#47ae4a3b)
[INFO] [stderr]     Checking guard_extraction v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `now_`
[INFO] [stderr]    --> src/lib.rs:601:21
[INFO] [stderr]     |
[INFO] [stderr] 601 |                 let now_ = std::time::Instant::now();
[INFO] [stderr]     |                     ^^^^ help: consider prefixing with an underscore: `_now_`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `not`
[INFO] [stderr]    --> src/lib.rs:670:9
[INFO] [stderr]     |
[INFO] [stderr] 670 |     let not = |x| Ex::NOT(Box::new(x));
[INFO] [stderr]     |         ^^^ help: consider prefixing with an underscore: `_not`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `now_`
[INFO] [stderr]    --> src/lib.rs:601:21
[INFO] [stderr]     |
[INFO] [stderr] 601 |                 let now_ = std::time::Instant::now();
[INFO] [stderr]     |                     ^^^^ help: consider prefixing with an underscore: `_now_`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `raw`
[INFO] [stderr]   --> src/bdd_domain.rs:84:4
[INFO] [stderr]    |
[INFO] [stderr] 84 | fn raw(bdd: &mut BDD, f: BDDFunc, d: &BDDDomain) {
[INFO] [stderr]    |    ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/bdd_helpers.rs:65:9
[INFO] [stderr]    |
[INFO] [stderr] 65 |     let mut x = powerset(&x);
[INFO] [stderr]    |         ----^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `raw`
[INFO] [stderr]   --> src/bdd_domain.rs:84:4
[INFO] [stderr]    |
[INFO] [stderr] 84 | fn raw(bdd: &mut BDD, f: BDDFunc, d: &BDDDomain) {
[INFO] [stderr]    |    ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> examples/wodes.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashSet`
[INFO] [stderr]  --> examples/wodes.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::collections::HashSet;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter::FromIterator`
[INFO] [stderr]  --> examples/wodes.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::iter::FromIterator;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `itertools::Itertools`
[INFO] [stderr]  --> examples/wodes.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use itertools::Itertools;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `nv`
[INFO] [stderr]   --> examples/wodes.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |     let nv = |n| Ex::NOT(Box::new(Ex::VAR(n)));
[INFO] [stderr]    |         ^^ help: consider prefixing with an underscore: `_nv`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.98s
[INFO] running `"docker" "inspect" "7a980f0bd95f46b1e444ceeabdb15f0bcd73f0031473ebec5a21b500abd4fb05"`
[INFO] running `"docker" "rm" "-f" "7a980f0bd95f46b1e444ceeabdb15f0bcd73f0031473ebec5a21b500abd4fb05"`
[INFO] [stdout] 7a980f0bd95f46b1e444ceeabdb15f0bcd73f0031473ebec5a21b500abd4fb05