[INFO] cloning repository https://github.com/puzzithinker/rust-calc-sum-of-series
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/puzzithinker/rust-calc-sum-of-series" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpuzzithinker%2Frust-calc-sum-of-series", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpuzzithinker%2Frust-calc-sum-of-series'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cab275bac942692b0b3b9d99c09fb7961caf80e2
[INFO] checking puzzithinker/rust-calc-sum-of-series against try#a611f2a14e38407ec6717a86a01424ee6fc80762 for pr-154992
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpuzzithinker%2Frust-calc-sum-of-series" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/puzzithinker/rust-calc-sum-of-series
[INFO] finished tweaking git repo https://github.com/puzzithinker/rust-calc-sum-of-series
[INFO] tweaked toml for git repo https://github.com/puzzithinker/rust-calc-sum-of-series written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/puzzithinker/rust-calc-sum-of-series on toolchain a611f2a14e38407ec6717a86a01424ee6fc80762
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a611f2a14e38407ec6717a86a01424ee6fc80762" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/puzzithinker/rust-calc-sum-of-series 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" "+a611f2a14e38407ec6717a86a01424ee6fc80762" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+a611f2a14e38407ec6717a86a01424ee6fc80762" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bef925af91aa13e21cfd7b41b125179a43c99238dd3a758d54e8e6aa9dc30d0d
[INFO] running `Command { std: "docker" "start" "-a" "bef925af91aa13e21cfd7b41b125179a43c99238dd3a758d54e8e6aa9dc30d0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bef925af91aa13e21cfd7b41b125179a43c99238dd3a758d54e8e6aa9dc30d0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bef925af91aa13e21cfd7b41b125179a43c99238dd3a758d54e8e6aa9dc30d0d", kill_on_drop: false }`
[INFO] [stdout] bef925af91aa13e21cfd7b41b125179a43c99238dd3a758d54e8e6aa9dc30d0d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+a611f2a14e38407ec6717a86a01424ee6fc80762" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 44d7c126988e9a1a03d0092b40ba17f7b8789466e848f8688689a5e83541c305
[INFO] running `Command { std: "docker" "start" "-a" "44d7c126988e9a1a03d0092b40ba17f7b8789466e848f8688689a5e83541c305", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-calc-sum-of-series v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let mut num_series = vec![1, 3, 5, 7, 9, 11];
[INFO] [stdout]   |         ----^^^^^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let mut num_series = vec![1, 3, 5, 7, 9, 11];
[INFO] [stdout]   |         ----^^^^^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] running `Command { std: "docker" "inspect" "44d7c126988e9a1a03d0092b40ba17f7b8789466e848f8688689a5e83541c305", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44d7c126988e9a1a03d0092b40ba17f7b8789466e848f8688689a5e83541c305", kill_on_drop: false }`
[INFO] [stdout] 44d7c126988e9a1a03d0092b40ba17f7b8789466e848f8688689a5e83541c305
