[INFO] cloning repository https://github.com/vijaykm2/TheRustProgrammingLanguageBook
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vijaykm2/TheRustProgrammingLanguageBook" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvijaykm2%2FTheRustProgrammingLanguageBook", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvijaykm2%2FTheRustProgrammingLanguageBook'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 12d7c828497e7a2e1abfe923db877ef8c821c5e5
[INFO] checking vijaykm2/TheRustProgrammingLanguageBook against try#3d9fdbff4f377de96b3a51174e7a64086bee9a5c for pr-81477
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvijaykm2%2FTheRustProgrammingLanguageBook" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vijaykm2/TheRustProgrammingLanguageBook on toolchain 3d9fdbff4f377de96b3a51174e7a64086bee9a5c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vijaykm2/TheRustProgrammingLanguageBook
[INFO] finished tweaking git repo https://github.com/vijaykm2/TheRustProgrammingLanguageBook
[INFO] tweaked toml for git repo https://github.com/vijaykm2/TheRustProgrammingLanguageBook written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/vijaykm2/TheRustProgrammingLanguageBook already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 644c56cb7b7a8466f174d3acf399f2adf2d933bf8f4c6c3b12608c317e3bb35b
[INFO] running `Command { std: "docker" "start" "-a" "644c56cb7b7a8466f174d3acf399f2adf2d933bf8f4c6c3b12608c317e3bb35b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "644c56cb7b7a8466f174d3acf399f2adf2d933bf8f4c6c3b12608c317e3bb35b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "644c56cb7b7a8466f174d3acf399f2adf2d933bf8f4c6c3b12608c317e3bb35b", kill_on_drop: false }`
[INFO] [stdout] 644c56cb7b7a8466f174d3acf399f2adf2d933bf8f4c6c3b12608c317e3bb35b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1c213890a23adbddc4ac85dc80ef6cd382af9d4162c8ba7e28756075ec7c5fa3
[INFO] running `Command { std: "docker" "start" "-a" "1c213890a23adbddc4ac85dc80ef6cd382af9d4162c8ba7e28756075ec7c5fa3", kill_on_drop: false }`
[INFO] [stderr]     Checking TheRustProgrammingLanguageBook v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: crate `TheRustProgrammingLanguageBook` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `the_rust_programming_language_book`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stdout] warning: crate `TheRustProgrammingLanguageBook` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `the_rust_programming_language_book`
[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] running `Command { std: "docker" "inspect" "1c213890a23adbddc4ac85dc80ef6cd382af9d4162c8ba7e28756075ec7c5fa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c213890a23adbddc4ac85dc80ef6cd382af9d4162c8ba7e28756075ec7c5fa3", kill_on_drop: false }`
[INFO] [stdout] 1c213890a23adbddc4ac85dc80ef6cd382af9d4162c8ba7e28756075ec7c5fa3