[INFO] cloning repository https://github.com/RaoulLuque/dimacs-petgraph-parser
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/RaoulLuque/dimacs-petgraph-parser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRaoulLuque%2Fdimacs-petgraph-parser", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRaoulLuque%2Fdimacs-petgraph-parser'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 229657257167888d53f1400c74c208006b1ad95d
[INFO] checking RaoulLuque/dimacs-petgraph-parser against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRaoulLuque%2Fdimacs-petgraph-parser" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/RaoulLuque/dimacs-petgraph-parser 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/RaoulLuque/dimacs-petgraph-parser
[INFO] finished tweaking git repo https://github.com/RaoulLuque/dimacs-petgraph-parser
[INFO] tweaked toml for git repo https://github.com/RaoulLuque/dimacs-petgraph-parser written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/RaoulLuque/dimacs-petgraph-parser 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 56d51950c7abeb1711db56b0577279e6e4b9e78be46568df622357cb263c3134
[INFO] running `Command { std: "docker" "start" "-a" "56d51950c7abeb1711db56b0577279e6e4b9e78be46568df622357cb263c3134", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56d51950c7abeb1711db56b0577279e6e4b9e78be46568df622357cb263c3134", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56d51950c7abeb1711db56b0577279e6e4b9e78be46568df622357cb263c3134", kill_on_drop: false }`
[INFO] [stdout] 56d51950c7abeb1711db56b0577279e6e4b9e78be46568df622357cb263c3134
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 4bba9c1cccd90ce1451a6f9e52d412f8e07333e24f334eb5e0e64fcc5e0aa2a5
[INFO] running `Command { std: "docker" "start" "-a" "4bba9c1cccd90ce1451a6f9e52d412f8e07333e24f334eb5e0e64fcc5e0aa2a5", kill_on_drop: false }`
[INFO] [stderr]     Checking indexmap v2.2.6
[INFO] [stderr]     Checking either v1.11.0
[INFO] [stderr]     Checking fixedbitset v0.4.2
[INFO] [stderr]     Checking itertools v0.12.1
[INFO] [stderr]     Checking petgraph v0.6.4
[INFO] [stderr]     Checking dimacs_petgraph_parser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let mut current_line = lines
[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/lib.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let mut current_line = lines
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.86s
[INFO] running `Command { std: "docker" "inspect" "4bba9c1cccd90ce1451a6f9e52d412f8e07333e24f334eb5e0e64fcc5e0aa2a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bba9c1cccd90ce1451a6f9e52d412f8e07333e24f334eb5e0e64fcc5e0aa2a5", kill_on_drop: false }`
[INFO] [stdout] 4bba9c1cccd90ce1451a6f9e52d412f8e07333e24f334eb5e0e64fcc5e0aa2a5
[INFO] checking RaoulLuque/dimacs-petgraph-parser against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRaoulLuque%2Fdimacs-petgraph-parser" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/RaoulLuque/dimacs-petgraph-parser 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/RaoulLuque/dimacs-petgraph-parser
[INFO] finished tweaking git repo https://github.com/RaoulLuque/dimacs-petgraph-parser
[INFO] tweaked toml for git repo https://github.com/RaoulLuque/dimacs-petgraph-parser written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/RaoulLuque/dimacs-petgraph-parser 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] cf8fae830862dbb29a8fec24f5e6c286c7627e4e23b6c3bc26806b44e466d9e0
[INFO] running `Command { std: "docker" "start" "-a" "cf8fae830862dbb29a8fec24f5e6c286c7627e4e23b6c3bc26806b44e466d9e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cf8fae830862dbb29a8fec24f5e6c286c7627e4e23b6c3bc26806b44e466d9e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf8fae830862dbb29a8fec24f5e6c286c7627e4e23b6c3bc26806b44e466d9e0", kill_on_drop: false }`
[INFO] [stdout] cf8fae830862dbb29a8fec24f5e6c286c7627e4e23b6c3bc26806b44e466d9e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 2439bf3fef5ca6a820f2b158ec4a303eac110b830fb457e6171e63fa3ae212b2
[INFO] running `Command { std: "docker" "start" "-a" "2439bf3fef5ca6a820f2b158ec4a303eac110b830fb457e6171e63fa3ae212b2", kill_on_drop: false }`
[INFO] [stderr]     Checking indexmap v2.2.6
[INFO] [stderr]     Checking either v1.11.0
[INFO] [stderr]     Checking fixedbitset v0.4.2
[INFO] [stderr]     Checking itertools v0.12.1
[INFO] [stderr]     Checking petgraph v0.6.4
[INFO] [stderr]     Checking dimacs_petgraph_parser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let mut current_line = lines
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let mut current_line = lines
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.47s
[INFO] running `Command { std: "docker" "inspect" "2439bf3fef5ca6a820f2b158ec4a303eac110b830fb457e6171e63fa3ae212b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2439bf3fef5ca6a820f2b158ec4a303eac110b830fb457e6171e63fa3ae212b2", kill_on_drop: false }`
[INFO] [stdout] 2439bf3fef5ca6a820f2b158ec4a303eac110b830fb457e6171e63fa3ae212b2