[INFO] cloning repository https://github.com/willypuzzle/guess_number
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/willypuzzle/guess_number" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwillypuzzle%2Fguess_number", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwillypuzzle%2Fguess_number'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e874493d544d17c5db5d468752b0127a5ba8238b
[INFO] checking willypuzzle/guess_number against master#8321f00bf4a5f25cad5ec8861c5469afe6e0ce8b for pr-133925
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwillypuzzle%2Fguess_number" "/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/willypuzzle/guess_number on toolchain 8321f00bf4a5f25cad5ec8861c5469afe6e0ce8b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8321f00bf4a5f25cad5ec8861c5469afe6e0ce8b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/willypuzzle/guess_number
[INFO] finished tweaking git repo https://github.com/willypuzzle/guess_number
[INFO] tweaked toml for git repo https://github.com/willypuzzle/guess_number written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/willypuzzle/guess_number 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" "+8321f00bf4a5f25cad5ec8861c5469afe6e0ce8b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+8321f00bf4a5f25cad5ec8861c5469afe6e0ce8b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7839daf339e92a5673e22314437eac4e3107f23ab77af29a725d84b53aa65825
[INFO] running `Command { std: "docker" "start" "-a" "7839daf339e92a5673e22314437eac4e3107f23ab77af29a725d84b53aa65825", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7839daf339e92a5673e22314437eac4e3107f23ab77af29a725d84b53aa65825", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7839daf339e92a5673e22314437eac4e3107f23ab77af29a725d84b53aa65825", kill_on_drop: false }`
[INFO] [stdout] 7839daf339e92a5673e22314437eac4e3107f23ab77af29a725d84b53aa65825
[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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+8321f00bf4a5f25cad5ec8861c5469afe6e0ce8b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fc0d8c56aabf81a4a78652373ce65ab02fa7718ff587278f6728db13b1f60595
[INFO] running `Command { std: "docker" "start" "-a" "fc0d8c56aabf81a4a78652373ce65ab02fa7718ff587278f6728db13b1f60595", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking guess_number v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `test_value` is never read
[INFO] [stdout]   --> src/main.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut test_value = 0;
[INFO] [stdout]    |             ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `test_value` is never read
[INFO] [stdout]   --> src/main.rs:28:13
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut test_value = 0;
[INFO] [stdout]    |             ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.61s
[INFO] running `Command { std: "docker" "inspect" "fc0d8c56aabf81a4a78652373ce65ab02fa7718ff587278f6728db13b1f60595", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc0d8c56aabf81a4a78652373ce65ab02fa7718ff587278f6728db13b1f60595", kill_on_drop: false }`
[INFO] [stdout] fc0d8c56aabf81a4a78652373ce65ab02fa7718ff587278f6728db13b1f60595