[INFO] cloning repository https://github.com/derreksherman/simple_roller
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/derreksherman/simple_roller" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fderreksherman%2Fsimple_roller", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fderreksherman%2Fsimple_roller'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 89c4dc08a94220e1fdd3b0ce905014dd92dae38a
[INFO] checking derreksherman/simple_roller against try#7dabc88a3b6768751847baeb49983f31ac5f20e2 for pr-155945
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fderreksherman%2Fsimple_roller" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/derreksherman/simple_roller
[INFO] finished tweaking git repo https://github.com/derreksherman/simple_roller
[INFO] tweaked toml for git repo https://github.com/derreksherman/simple_roller written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/derreksherman/simple_roller on toolchain 7dabc88a3b6768751847baeb49983f31ac5f20e2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7dabc88a3b6768751847baeb49983f31ac5f20e2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/derreksherman/simple_roller 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" "+7dabc88a3b6768751847baeb49983f31ac5f20e2" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.8
[INFO] [stderr]   Downloaded getrandom v0.1.14
[INFO] [stderr]   Downloaded libc v0.2.71
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+7dabc88a3b6768751847baeb49983f31ac5f20e2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d7819c52b21811e8403e98662d2de5af7e9dc5b513dad1db6905cc3c7b0d5631
[INFO] running `Command { std: "docker" "start" "-a" "d7819c52b21811e8403e98662d2de5af7e9dc5b513dad1db6905cc3c7b0d5631", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d7819c52b21811e8403e98662d2de5af7e9dc5b513dad1db6905cc3c7b0d5631", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7819c52b21811e8403e98662d2de5af7e9dc5b513dad1db6905cc3c7b0d5631", kill_on_drop: false }`
[INFO] [stdout] d7819c52b21811e8403e98662d2de5af7e9dc5b513dad1db6905cc3c7b0d5631
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+7dabc88a3b6768751847baeb49983f31ac5f20e2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ef5f7f1ae40eae798d406c52e9a9202057019f72c5a2ffd57e9e266b9a200321
[INFO] running `Command { std: "docker" "start" "-a" "ef5f7f1ae40eae798d406c52e9a9202057019f72c5a2ffd57e9e266b9a200321", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking roller v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `print_string` is never read
[INFO] [stdout]   --> src/main.rs:40:36
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut print_string: String = String::new();
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 56 |           print_string = roll::print_all_rolls(num_roll, dice_type, add_on);
[INFO] [stdout]    |           ------------ `print_string` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.51s
[INFO] [stdout] warning: value assigned to `print_string` is never read
[INFO] [stdout]   --> src/main.rs:40:36
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut print_string: String = String::new();
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 56 |           print_string = roll::print_all_rolls(num_roll, dice_type, add_on);
[INFO] [stdout]    |           ------------ `print_string` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ef5f7f1ae40eae798d406c52e9a9202057019f72c5a2ffd57e9e266b9a200321", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef5f7f1ae40eae798d406c52e9a9202057019f72c5a2ffd57e9e266b9a200321", kill_on_drop: false }`
[INFO] [stdout] ef5f7f1ae40eae798d406c52e9a9202057019f72c5a2ffd57e9e266b9a200321
