[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#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShoilee%2Flong-tail-alignment" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Shoilee/long-tail-alignment on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-6-tc1/source/Cargo.toml
[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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--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-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7f3e5f207e80c8407f57949ea52954d2ce844bdc1b883e23a5e1cbc97de757d8
[INFO] running `Command { std: "docker" "start" "-a" "7f3e5f207e80c8407f57949ea52954d2ce844bdc1b883e23a5e1cbc97de757d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7f3e5f207e80c8407f57949ea52954d2ce844bdc1b883e23a5e1cbc97de757d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f3e5f207e80c8407f57949ea52954d2ce844bdc1b883e23a5e1cbc97de757d8", kill_on_drop: false }`
[INFO] [stdout] 7f3e5f207e80c8407f57949ea52954d2ce844bdc1b883e23a5e1cbc97de757d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 00a1f6f01ebe77a5178e7fb702e421b1f232bc0788d05dedb655eaa35002909e
[INFO] running `Command { std: "docker" "start" "-a" "00a1f6f01ebe77a5178e7fb702e421b1f232bc0788d05dedb655eaa35002909e", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking itertools v0.12.1
[INFO] [stderr]     Checking flashfill v0.1.0 (/opt/rustwide/workdir)
[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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.33s
[INFO] running `Command { std: "docker" "inspect" "00a1f6f01ebe77a5178e7fb702e421b1f232bc0788d05dedb655eaa35002909e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00a1f6f01ebe77a5178e7fb702e421b1f232bc0788d05dedb655eaa35002909e", kill_on_drop: false }`
[INFO] [stdout] 00a1f6f01ebe77a5178e7fb702e421b1f232bc0788d05dedb655eaa35002909e
[INFO] checking Shoilee/long-tail-alignment against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShoilee%2Flong-tail-alignment" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Shoilee/long-tail-alignment on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-6-tc2/source/Cargo.toml
[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" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 096e1b379fac0a55c6e82f3e7f6556b0c40c1ed670f9c3250394e777ed37c925
[INFO] running `Command { std: "docker" "start" "-a" "096e1b379fac0a55c6e82f3e7f6556b0c40c1ed670f9c3250394e777ed37c925", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "096e1b379fac0a55c6e82f3e7f6556b0c40c1ed670f9c3250394e777ed37c925", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "096e1b379fac0a55c6e82f3e7f6556b0c40c1ed670f9c3250394e777ed37c925", kill_on_drop: false }`
[INFO] [stdout] 096e1b379fac0a55c6e82f3e7f6556b0c40c1ed670f9c3250394e777ed37c925
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1827133fdeee514783e30960afbfd0b495e908877e2850caa8690030f602fa7d
[INFO] running `Command { std: "docker" "start" "-a" "1827133fdeee514783e30960afbfd0b495e908877e2850caa8690030f602fa7d", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking itertools v0.12.1
[INFO] [stderr]     Checking flashfill v0.1.0 (/opt/rustwide/workdir)
[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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.32s
[INFO] running `Command { std: "docker" "inspect" "1827133fdeee514783e30960afbfd0b495e908877e2850caa8690030f602fa7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1827133fdeee514783e30960afbfd0b495e908877e2850caa8690030f602fa7d", kill_on_drop: false }`
[INFO] [stdout] 1827133fdeee514783e30960afbfd0b495e908877e2850caa8690030f602fa7d