[INFO] cloning repository https://github.com/NickAllbritton/threenplus1
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NickAllbritton/threenplus1" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNickAllbritton%2Fthreenplus1", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNickAllbritton%2Fthreenplus1'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 21cce56cf67e13f749b9ca2f25665ac3562de360
[INFO] checking NickAllbritton/threenplus1 against try#2c4819a380dbddb1f2a0f4405a49fb6ed90983ae for pr-152996
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNickAllbritton%2Fthreenplus1" "/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/NickAllbritton/threenplus1
[INFO] finished tweaking git repo https://github.com/NickAllbritton/threenplus1
[INFO] tweaked toml for git repo https://github.com/NickAllbritton/threenplus1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/NickAllbritton/threenplus1 on toolchain 2c4819a380dbddb1f2a0f4405a49fb6ed90983ae
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2c4819a380dbddb1f2a0f4405a49fb6ed90983ae" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/NickAllbritton/threenplus1 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" "+2c4819a380dbddb1f2a0f4405a49fb6ed90983ae" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+2c4819a380dbddb1f2a0f4405a49fb6ed90983ae" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 22c9762d42d09eeb10012576cbc75bf5b21e9ebbdf11e861442fed73031aa157
[INFO] running `Command { std: "docker" "start" "-a" "22c9762d42d09eeb10012576cbc75bf5b21e9ebbdf11e861442fed73031aa157", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "22c9762d42d09eeb10012576cbc75bf5b21e9ebbdf11e861442fed73031aa157", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22c9762d42d09eeb10012576cbc75bf5b21e9ebbdf11e861442fed73031aa157", kill_on_drop: false }`
[INFO] [stdout] 22c9762d42d09eeb10012576cbc75bf5b21e9ebbdf11e861442fed73031aa157
[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" "+2c4819a380dbddb1f2a0f4405a49fb6ed90983ae" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 224d2e6ee9eab63ba38740242dc7b8218d9e3b42072665ab6c19eeb11f6f42c1
[INFO] running `Command { std: "docker" "start" "-a" "224d2e6ee9eab63ba38740242dc7b8218d9e3b42072665ab6c19eeb11f6f42c1", kill_on_drop: false }`
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.6.8
[INFO] [stderr]    Compiling rug v1.28.1
[INFO] [stderr]     Checking threenplus1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `rug::integer::MiniInteger`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rug::integer::MiniInteger;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rug::integer::MiniInteger`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rug::integer::MiniInteger;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) 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" "224d2e6ee9eab63ba38740242dc7b8218d9e3b42072665ab6c19eeb11f6f42c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "224d2e6ee9eab63ba38740242dc7b8218d9e3b42072665ab6c19eeb11f6f42c1", kill_on_drop: false }`
[INFO] [stdout] 224d2e6ee9eab63ba38740242dc7b8218d9e3b42072665ab6c19eeb11f6f42c1