[INFO] cloning repository https://github.com/hjfreyer/prec
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hjfreyer/prec" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhjfreyer%2Fprec", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhjfreyer%2Fprec'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 80c98b29e70b861e20a06aa9fd9952d0c24543b7
[INFO] checking hjfreyer/prec against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhjfreyer%2Fprec" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hjfreyer/prec on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hjfreyer/prec
[INFO] finished tweaking git repo https://github.com/hjfreyer/prec
[INFO] tweaked toml for git repo https://github.com/hjfreyer/prec written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/hjfreyer/prec already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "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" "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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0cbe7a06f9ec252dbdb706745bfa8ca0532ada5f2f3a86b640024b00208cc2e9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0cbe7a06f9ec252dbdb706745bfa8ca0532ada5f2f3a86b640024b00208cc2e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0cbe7a06f9ec252dbdb706745bfa8ca0532ada5f2f3a86b640024b00208cc2e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cbe7a06f9ec252dbdb706745bfa8ca0532ada5f2f3a86b640024b00208cc2e9", kill_on_drop: false }`
[INFO] [stdout] 0cbe7a06f9ec252dbdb706745bfa8ca0532ada5f2f3a86b640024b00208cc2e9
[INFO] running `Command { std: "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" "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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9ade8b2d417e2151d6bf2622f0a30325c2a711907278d8636543dd558c11e229
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9ade8b2d417e2151d6bf2622f0a30325c2a711907278d8636543dd558c11e229", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking typed-arena v2.0.1
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking rand_xoshiro v0.4.0
[INFO] [stderr]    Compiling im v14.3.0
[INFO] [stderr]     Checking bitmaps v2.1.0
[INFO] [stderr]     Checking sized-chunks v0.5.3
[INFO] [stderr]     Checking prec v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/func/tactics.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |         (|| (RecursiveTactic(Action::ProjCar))(RecursiveTactic(Action::ProjCdr))(RecursiveTactic(
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/stack/tactics.rs:43:23
[INFO] [stdout]    |
[INFO] [stdout] 43 |     crate::tactic![(&&(car(path::tactics::simplify()))(refl()))]
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/stack/tactics.rs:43:55
[INFO] [stdout]    |
[INFO] [stdout] 43 |     crate::tactic![(&&(car(path::tactics::simplify()))(refl()))]
[INFO] [stdout]    |                                                       ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/stack/tactics.rs:138:12
[INFO] [stdout]     |
[INFO] [stdout] 138 |         (&&(cut(func1))(cdr(cut(func2)))(cdr(swap()))(cdr(car(path::tactics::reverse()))))
[INFO] [stdout]     |            ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/stack/tactics.rs:159:16
[INFO] [stdout]     |
[INFO] [stdout] 159 |             (&&(Cut())(car(path::tactics::induction()))(cdr(car(path::tactics::rec_z()))))
[INFO] [stdout]     |                ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/stack/tactics.rs:164:13
[INFO] [stdout]     |
[INFO] [stdout] 164 |         (|| (one_side())(&&(car(path::tactics::reverse()))(one_side())(car(
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/stack/tactics.rs:182:12
[INFO] [stdout]     |
[INFO] [stdout] 182 |         (&&(Cut())(car(path::tactics::stack_cdr()))(cdr(car(path::tactics::stack_car()))))
[INFO] [stdout]     |            ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/func/tactics.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |         (|| (RecursiveTactic(Action::ProjCar))(RecursiveTactic(Action::ProjCdr))(RecursiveTactic(
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/stack/tactics.rs:43:23
[INFO] [stdout]    |
[INFO] [stdout] 43 |     crate::tactic![(&&(car(path::tactics::simplify()))(refl()))]
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/stack/tactics.rs:43:55
[INFO] [stdout]    |
[INFO] [stdout] 43 |     crate::tactic![(&&(car(path::tactics::simplify()))(refl()))]
[INFO] [stdout]    |                                                       ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/stack/tactics.rs:138:12
[INFO] [stdout]     |
[INFO] [stdout] 138 |         (&&(cut(func1))(cdr(cut(func2)))(cdr(swap()))(cdr(car(path::tactics::reverse()))))
[INFO] [stdout]     |            ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/stack/tactics.rs:159:16
[INFO] [stdout]     |
[INFO] [stdout] 159 |             (&&(Cut())(car(path::tactics::induction()))(cdr(car(path::tactics::rec_z()))))
[INFO] [stdout]     |                ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/stack/tactics.rs:164:13
[INFO] [stdout]     |
[INFO] [stdout] 164 |         (|| (one_side())(&&(car(path::tactics::reverse()))(one_side())(car(
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/stack/tactics.rs:182:12
[INFO] [stdout]     |
[INFO] [stdout] 182 |         (&&(Cut())(car(path::tactics::stack_cdr()))(cdr(car(path::tactics::stack_car()))))
[INFO] [stdout]     |            ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.00s
[INFO] running `Command { std: "docker" "inspect" "9ade8b2d417e2151d6bf2622f0a30325c2a711907278d8636543dd558c11e229", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ade8b2d417e2151d6bf2622f0a30325c2a711907278d8636543dd558c11e229", kill_on_drop: false }`
[INFO] [stdout] 9ade8b2d417e2151d6bf2622f0a30325c2a711907278d8636543dd558c11e229