[INFO] updating cached repository https://github.com/mmarkell/rust_sat
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/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] 150d0e00a58c2b9c89356bcb28fa31db120b3867
[INFO] checking mmarkell/rust_sat against try#00e4530a79c42b21a6ca2ac1edb597c90d21f89f for pr-64672
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmarkell%2Frust_sat" "work/builds/worker-2/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mmarkell/rust_sat on toolchain 00e4530a79c42b21a6ca2ac1edb597c90d21f89f
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/mmarkell/rust_sat
[INFO] finished tweaking git repo https://github.com/mmarkell/rust_sat
[INFO] tweaked toml for git repo https://github.com/mmarkell/rust_sat written to work/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/mmarkell/rust_sat already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ba58f163fe3776c597811cd899ef6309591941957c51b71c11d284031984c488
[INFO] running `"docker" "start" "-a" "ba58f163fe3776c597811cd899ef6309591941957c51b71c11d284031984c488"`
[INFO] [stderr]     Checking sat_solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]   --> src/solver.rs:47:29
[INFO] [stderr]    |
[INFO] [stderr] 47 |             new_vars.remove((idx as usize));
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]   --> src/solver.rs:47:29
[INFO] [stderr]    |
[INFO] [stderr] 47 |             new_vars.remove((idx as usize));
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `width`
[INFO] [stderr]   --> src/encoder.rs:53:45
[INFO] [stderr]    |
[INFO] [stderr] 53 | pub fn format_output((positives, negatives, width, height): (Vec<i32>, Vec<i32>, i32, i32)) {
[INFO] [stderr]    |                                             ^^^^^ help: consider prefixing with an underscore: `_width`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `height`
[INFO] [stderr]   --> src/encoder.rs:53:52
[INFO] [stderr]    |
[INFO] [stderr] 53 | pub fn format_output((positives, negatives, width, height): (Vec<i32>, Vec<i32>, i32, i32)) {
[INFO] [stderr]    |                                                    ^^^^^^ help: consider prefixing with an underscore: `_height`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `last_seen`
[INFO] [stderr]   --> src/solver.rs:73:33
[INFO] [stderr]    |
[INFO] [stderr] 73 |             Some(&(occurrences, last_seen)) => {
[INFO] [stderr]    |                                 ^^^^^^^^^ help: consider prefixing with an underscore: `_last_seen`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `width`
[INFO] [stderr]   --> src/encoder.rs:53:45
[INFO] [stderr]    |
[INFO] [stderr] 53 | pub fn format_output((positives, negatives, width, height): (Vec<i32>, Vec<i32>, i32, i32)) {
[INFO] [stderr]    |                                             ^^^^^ help: consider prefixing with an underscore: `_width`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `height`
[INFO] [stderr]   --> src/encoder.rs:53:52
[INFO] [stderr]    |
[INFO] [stderr] 53 | pub fn format_output((positives, negatives, width, height): (Vec<i32>, Vec<i32>, i32, i32)) {
[INFO] [stderr]    |                                                    ^^^^^^ help: consider prefixing with an underscore: `_height`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `last_seen`
[INFO] [stderr]   --> src/solver.rs:73:33
[INFO] [stderr]    |
[INFO] [stderr] 73 |             Some(&(occurrences, last_seen)) => {
[INFO] [stderr]    |                                 ^^^^^^^^^ help: consider prefixing with an underscore: `_last_seen`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/solver.rs:189:17
[INFO] [stderr]     |
[INFO] [stderr] 189 |             let mut copy_clause_2 = clause.clone();
[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: variable does not need to be mutable
[INFO] [stderr]    --> src/solver.rs:190:17
[INFO] [stderr]     |
[INFO] [stderr] 190 |             let mut copy_clause_3 = clause.clone();
[INFO] [stderr]     |                 ----^^^^^^^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/solver.rs:189:17
[INFO] [stderr]     |
[INFO] [stderr] 189 |             let mut copy_clause_2 = clause.clone();
[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: variable does not need to be mutable
[INFO] [stderr]    --> src/solver.rs:190:17
[INFO] [stderr]     |
[INFO] [stderr] 190 |             let mut copy_clause_3 = clause.clone();
[INFO] [stderr]     |                 ----^^^^^^^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `"docker" "inspect" "ba58f163fe3776c597811cd899ef6309591941957c51b71c11d284031984c488"`
[INFO] running `"docker" "rm" "-f" "ba58f163fe3776c597811cd899ef6309591941957c51b71c11d284031984c488"`
[INFO] [stdout] ba58f163fe3776c597811cd899ef6309591941957c51b71c11d284031984c488