[INFO] fetching crate rug-polynomial 0.2.3...
[INFO] testing rug-polynomial-0.2.3 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate rug-polynomial 0.2.3 into /workspace/builds/worker-49/source
[INFO] validating manifest of crates.io crate rug-polynomial 0.2.3 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rug-polynomial 0.2.3
[INFO] finished tweaking crates.io crate rug-polynomial 0.2.3
[INFO] tweaked toml for crates.io crate rug-polynomial 0.2.3 written to /workspace/builds/worker-49/source/Cargo.toml
[INFO] crate crates.io crate rug-polynomial 0.2.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3950b2de53b6465852411e6bd13001c1571ab0505385fa2083a999b811ce6412
[INFO] running `Command { std: "docker" "start" "-a" "3950b2de53b6465852411e6bd13001c1571ab0505385fa2083a999b811ce6412", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3950b2de53b6465852411e6bd13001c1571ab0505385fa2083a999b811ce6412", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3950b2de53b6465852411e6bd13001c1571ab0505385fa2083a999b811ce6412", kill_on_drop: false }`
[INFO] [stdout] 3950b2de53b6465852411e6bd13001c1571ab0505385fa2083a999b811ce6412
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-49/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f8e833c169d4fcd3236c503ce6d47194d699b0e12fa89ea13aac495caaa218d1
[INFO] running `Command { std: "docker" "start" "-a" "f8e833c169d4fcd3236c503ce6d47194d699b0e12fa89ea13aac495caaa218d1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.33
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling libc v0.2.109
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.4.7
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling az v1.2.0
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling rug v1.13.0
[INFO] [stderr]    Compiling pkg-config v0.3.23
[INFO] [stderr]    Compiling flint-sys v0.5.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] running `Command { std: "docker" "inspect" "f8e833c169d4fcd3236c503ce6d47194d699b0e12fa89ea13aac495caaa218d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8e833c169d4fcd3236c503ce6d47194d699b0e12fa89ea13aac495caaa218d1", kill_on_drop: false }`
[INFO] [stdout] f8e833c169d4fcd3236c503ce6d47194d699b0e12fa89ea13aac495caaa218d1