[INFO] cloning repository https://github.com/cabarclay/matt-parker-conjecture
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cabarclay/matt-parker-conjecture" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcabarclay%2Fmatt-parker-conjecture", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcabarclay%2Fmatt-parker-conjecture'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 463ea282553759fda743b3f60edbae414bcdc75a
[INFO] checking cabarclay/matt-parker-conjecture against master#19f42cb9bb65555e7d95dab7d17573ae6c5d634c for pr-139087
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcabarclay%2Fmatt-parker-conjecture" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cabarclay/matt-parker-conjecture on toolchain 19f42cb9bb65555e7d95dab7d17573ae6c5d634c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+19f42cb9bb65555e7d95dab7d17573ae6c5d634c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cabarclay/matt-parker-conjecture
[INFO] finished tweaking git repo https://github.com/cabarclay/matt-parker-conjecture
[INFO] tweaked toml for git repo https://github.com/cabarclay/matt-parker-conjecture written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/cabarclay/matt-parker-conjecture 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" "+19f42cb9bb65555e7d95dab7d17573ae6c5d634c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded az v1.1.0
[INFO] [stderr]   Downloaded rug v1.11.0
[INFO] [stderr]   Downloaded gmp-mpfr-sys v1.4.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+19f42cb9bb65555e7d95dab7d17573ae6c5d634c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cca09dafd3b884f61de48e1a81fc3174b7f0854afc0667d56eb23cf387befcf4
[INFO] running `Command { std: "docker" "start" "-a" "cca09dafd3b884f61de48e1a81fc3174b7f0854afc0667d56eb23cf387befcf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cca09dafd3b884f61de48e1a81fc3174b7f0854afc0667d56eb23cf387befcf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cca09dafd3b884f61de48e1a81fc3174b7f0854afc0667d56eb23cf387befcf4", kill_on_drop: false }`
[INFO] [stdout] cca09dafd3b884f61de48e1a81fc3174b7f0854afc0667d56eb23cf387befcf4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+19f42cb9bb65555e7d95dab7d17573ae6c5d634c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7315ec6636ef5a4f4e8c8ecbf3897067df8888e1b22646299f373d7c6ec8bdbc
[INFO] running `Command { std: "docker" "start" "-a" "7315ec6636ef5a4f4e8c8ecbf3897067df8888e1b22646299f373d7c6ec8bdbc", kill_on_drop: false }`
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.4.3
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling rug v1.11.0
[INFO] [stderr]     Checking az v1.1.0
[INFO] [stderr]     Checking matt-parker-conjecture v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant `Precision` should have an upper case name
[INFO] [stdout]   --> src/main.rs:19:11
[INFO] [stdout]    |
[INFO] [stdout] 19 |     const Precision: u32 = 100_000_000;
[INFO] [stdout]    |           ^^^^^^^^^ help: convert the identifier to upper case: `PRECISION`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `Precision` should have an upper case name
[INFO] [stdout]   --> src/main.rs:19:11
[INFO] [stdout]    |
[INFO] [stdout] 19 |     const Precision: u32 = 100_000_000;
[INFO] [stdout]    |           ^^^^^^^^^ help: convert the identifier to upper case: `PRECISION`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4m 56s
[INFO] running `Command { std: "docker" "inspect" "7315ec6636ef5a4f4e8c8ecbf3897067df8888e1b22646299f373d7c6ec8bdbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7315ec6636ef5a4f4e8c8ecbf3897067df8888e1b22646299f373d7c6ec8bdbc", kill_on_drop: false }`
[INFO] [stdout] 7315ec6636ef5a4f4e8c8ecbf3897067df8888e1b22646299f373d7c6ec8bdbc