[INFO] fetching crate symmetric-interaction-calculus 0.1.8...
[INFO] checking symmetric-interaction-calculus-0.1.8 against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] extracting crate symmetric-interaction-calculus 0.1.8 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate symmetric-interaction-calculus 0.1.8 on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate symmetric-interaction-calculus 0.1.8
[INFO] finished tweaking crates.io crate symmetric-interaction-calculus 0.1.8
[INFO] tweaked toml for crates.io crate symmetric-interaction-calculus 0.1.8 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 18a4c2afa6943e3aaf0514d5f19333f732ba7a742288fb137742f1008da70047
[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" "18a4c2afa6943e3aaf0514d5f19333f732ba7a742288fb137742f1008da70047", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "18a4c2afa6943e3aaf0514d5f19333f732ba7a742288fb137742f1008da70047", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18a4c2afa6943e3aaf0514d5f19333f732ba7a742288fb137742f1008da70047", kill_on_drop: false }`
[INFO] [stdout] 18a4c2afa6943e3aaf0514d5f19333f732ba7a742288fb137742f1008da70047
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 595cd67dd2048cb78109b25606783d2df61ca90538942108b222501a9a94b013
[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" "595cd67dd2048cb78109b25606783d2df61ca90538942108b222501a9a94b013", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.88
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking symmetric-interaction-calculus v0.1.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/term.rs:440:35
[INFO] [stdout]     |
[INFO] [stdout] 440 |         , lets_set : &mut HashSet<(u32)>
[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 type
[INFO] [stdout]    --> src/term.rs:440:35
[INFO] [stdout]     |
[INFO] [stdout] 440 |         , lets_set : &mut HashSet<(u32)>
[INFO] [stdout]     |                                   ^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/term.rs:210:37
[INFO] [stdout]     |
[INFO] [stdout] 210 | ...                   let mut name = nam.clone().to_vec();
[INFO] [stdout]     |                           ----^^^^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/term.rs:452:25
[INFO] [stdout]     |
[INFO] [stdout] 452 |                     let mut lam = Lam{nam: nam, bod: Box::new(bod)};
[INFO] [stdout]     |                         ----^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/term.rs:210:37
[INFO] [stdout]     |
[INFO] [stdout] 210 | ...                   let mut name = nam.clone().to_vec();
[INFO] [stdout]     |                           ----^^^^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/term.rs:452:25
[INFO] [stdout]     |
[INFO] [stdout] 452 |                     let mut lam = Lam{nam: nam, bod: Box::new(bod)};
[INFO] [stdout]     |                         ----^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/term.rs:440:35
[INFO] [stdout]     |
[INFO] [stdout] 440 |         , lets_set : &mut HashSet<(u32)>
[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 type
[INFO] [stdout]    --> src/term.rs:440:35
[INFO] [stdout]     |
[INFO] [stdout] 440 |         , lets_set : &mut HashSet<(u32)>
[INFO] [stdout]     |                                   ^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/term.rs:210:37
[INFO] [stdout]     |
[INFO] [stdout] 210 | ...                   let mut name = nam.clone().to_vec();
[INFO] [stdout]     |                           ----^^^^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/term.rs:452:25
[INFO] [stdout]     |
[INFO] [stdout] 452 |                     let mut lam = Lam{nam: nam, bod: Box::new(bod)};
[INFO] [stdout]     |                         ----^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/term.rs:210:37
[INFO] [stdout]     |
[INFO] [stdout] 210 | ...                   let mut name = nam.clone().to_vec();
[INFO] [stdout]     |                           ----^^^^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/term.rs:452:25
[INFO] [stdout]     |
[INFO] [stdout] 452 |                     let mut lam = Lam{nam: nam, bod: Box::new(bod)};
[INFO] [stdout]     |                         ----^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.94s
[INFO] running `Command { std: "docker" "inspect" "595cd67dd2048cb78109b25606783d2df61ca90538942108b222501a9a94b013", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "595cd67dd2048cb78109b25606783d2df61ca90538942108b222501a9a94b013", kill_on_drop: false }`
[INFO] [stdout] 595cd67dd2048cb78109b25606783d2df61ca90538942108b222501a9a94b013