[INFO] fetching crate na_seq 0.2.7...
[INFO] checking na_seq-0.2.7 against master#d2eadb7a94ef8c9deb5137695df33cd1fc5aee92 for pr-137268
[INFO] extracting crate na_seq 0.2.7 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate na_seq 0.2.7 on toolchain d2eadb7a94ef8c9deb5137695df33cd1fc5aee92
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d2eadb7a94ef8c9deb5137695df33cd1fc5aee92" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate na_seq 0.2.7
[INFO] finished tweaking crates.io crate na_seq 0.2.7
[INFO] tweaked toml for crates.io crate na_seq 0.2.7 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d2eadb7a94ef8c9deb5137695df33cd1fc5aee92" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 20 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d2eadb7a94ef8c9deb5137695df33cd1fc5aee92" "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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+d2eadb7a94ef8c9deb5137695df33cd1fc5aee92" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 121beab0e76f6fff0c6176d07649d06a71db99f9f2affd4a17203b2ad47623fc
[INFO] running `Command { std: "docker" "start" "-a" "121beab0e76f6fff0c6176d07649d06a71db99f9f2affd4a17203b2ad47623fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "121beab0e76f6fff0c6176d07649d06a71db99f9f2affd4a17203b2ad47623fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "121beab0e76f6fff0c6176d07649d06a71db99f9f2affd4a17203b2ad47623fc", kill_on_drop: false }`
[INFO] [stdout] 121beab0e76f6fff0c6176d07649d06a71db99f9f2affd4a17203b2ad47623fc
[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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+d2eadb7a94ef8c9deb5137695df33cd1fc5aee92" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e4787b6d43f5186ca78fa2a8aa08db3c60897f5f254288c9b91ee2bbf5c432f0
[INFO] running `Command { std: "docker" "start" "-a" "e4787b6d43f5186ca78fa2a8aa08db3c60897f5f254288c9b91ee2bbf5c432f0", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling equivalent v1.0.2
[INFO] [stderr]    Compiling hashbrown v0.15.3
[INFO] [stderr]    Compiling toml_datetime v0.6.9
[INFO] [stderr]    Compiling winnow v0.7.8
[INFO] [stderr]    Compiling virtue v0.0.18
[INFO] [stderr]     Checking unty v0.0.4
[INFO] [stderr]    Compiling bincode_derive v2.0.1
[INFO] [stderr]    Compiling indexmap v2.9.0
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]     Checking bincode v2.0.1
[INFO] [stderr]    Compiling toml_edit v0.22.26
[INFO] [stderr]    Compiling proc-macro-crate v3.3.0
[INFO] [stderr]    Compiling num_enum_derive v0.7.3
[INFO] [stderr]     Checking num_enum v0.7.3
[INFO] [stderr]     Checking na_seq v0.2.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `nt_overhang_b`
[INFO] [stdout]    --> src/ligation.rs:129:17
[INFO] [stdout]     |
[INFO] [stdout] 129 |             let nt_overhang_b: Vec<_> = re_l
[INFO] [stdout]     |                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_nt_overhang_b`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nt_overhang_b`
[INFO] [stdout]    --> src/ligation.rs:129:17
[INFO] [stdout]     |
[INFO] [stdout] 129 |             let nt_overhang_b: Vec<_> = re_l
[INFO] [stdout]     |                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_nt_overhang_b`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.26s
[INFO] running `Command { std: "docker" "inspect" "e4787b6d43f5186ca78fa2a8aa08db3c60897f5f254288c9b91ee2bbf5c432f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4787b6d43f5186ca78fa2a8aa08db3c60897f5f254288c9b91ee2bbf5c432f0", kill_on_drop: false }`
[INFO] [stdout] e4787b6d43f5186ca78fa2a8aa08db3c60897f5f254288c9b91ee2bbf5c432f0