[INFO] cloning repository https://github.com/Shoilee/long-tail-alignment
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Shoilee/long-tail-alignment" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShoilee%2Flong-tail-alignment", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShoilee%2Flong-tail-alignment'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bcbc038e6934f1969416b561d5a774046c6b012e
[INFO] checking Shoilee/long-tail-alignment against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShoilee%2Flong-tail-alignment" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Shoilee/long-tail-alignment
[INFO] finished tweaking git repo https://github.com/Shoilee/long-tail-alignment
[INFO] tweaked toml for git repo https://github.com/Shoilee/long-tail-alignment written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Shoilee/long-tail-alignment on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Shoilee/long-tail-alignment already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 96d3c1c9d6fd69af0388eca4a6408c054ff91afd6087cc422768542895891400
[INFO] running `Command { std: "docker" "start" "-a" "96d3c1c9d6fd69af0388eca4a6408c054ff91afd6087cc422768542895891400", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "96d3c1c9d6fd69af0388eca4a6408c054ff91afd6087cc422768542895891400", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96d3c1c9d6fd69af0388eca4a6408c054ff91afd6087cc422768542895891400", kill_on_drop: false }`
[INFO] [stdout] 96d3c1c9d6fd69af0388eca4a6408c054ff91afd6087cc422768542895891400
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 32601ffc05e74bfc2b46ea83733f2c416e2555f20de14048d9a554ff139df105
[INFO] running `Command { std: "docker" "start" "-a" "32601ffc05e74bfc2b46ea83733f2c416e2555f20de14048d9a554ff139df105", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]     Checking itertools v0.12.1
[INFO] [stderr]     Checking flashfill v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/eval.rs:138:41
[INFO] [stdout]     |
[INFO] [stdout] 138 |         TraceExpr(self.0.iter().map(|f| (f.substitute(k))).collect())
[INFO] [stdout]     |                                         ^               ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 138 -         TraceExpr(self.0.iter().map(|f| (f.substitute(k))).collect())
[INFO] [stdout] 138 +         TraceExpr(self.0.iter().map(|f| f.substitute(k)).collect())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/synthesis.rs:301:31
[INFO] [stdout]     |
[INFO] [stdout] 301 |             .map(|(sigma, s)| (generate_str(sigma, s, false)))
[INFO] [stdout]     |                               ^                             ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 301 -             .map(|(sigma, s)| (generate_str(sigma, s, false)))
[INFO] [stdout] 301 +             .map(|(sigma, s)| generate_str(sigma, s, false))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/eval.rs:138:41
[INFO] [stdout]     |
[INFO] [stdout] 138 |         TraceExpr(self.0.iter().map(|f| (f.substitute(k))).collect())
[INFO] [stdout]     |                                         ^               ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 138 -         TraceExpr(self.0.iter().map(|f| (f.substitute(k))).collect())
[INFO] [stdout] 138 +         TraceExpr(self.0.iter().map(|f| f.substitute(k)).collect())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `nodes` is never read
[INFO] [stdout]   --> src/data_structure.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct Dag {
[INFO] [stdout]    |            --- field in this struct
[INFO] [stdout] 38 |     pub nodes: HashSet<Node>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Dag` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `nodes` is never read
[INFO] [stdout]   --> src/data_structure.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct Dag {
[INFO] [stdout]    |            --- field in this struct
[INFO] [stdout] 38 |     pub nodes: HashSet<Node>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Dag` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.87s
[INFO] running `Command { std: "docker" "inspect" "32601ffc05e74bfc2b46ea83733f2c416e2555f20de14048d9a554ff139df105", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32601ffc05e74bfc2b46ea83733f2c416e2555f20de14048d9a554ff139df105", kill_on_drop: false }`
[INFO] [stdout] 32601ffc05e74bfc2b46ea83733f2c416e2555f20de14048d9a554ff139df105