[INFO] cloning repository https://github.com/DeltaSiera/big_number
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DeltaSiera/big_number" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDeltaSiera%2Fbig_number", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDeltaSiera%2Fbig_number'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 53eecaceb5588584d778493af637c7326982558a
[INFO] testing DeltaSiera/big_number against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDeltaSiera%2Fbig_number" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DeltaSiera/big_number on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/DeltaSiera/big_number
[INFO] finished tweaking git repo https://github.com/DeltaSiera/big_number
[INFO] tweaked toml for git repo https://github.com/DeltaSiera/big_number written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/DeltaSiera/big_number already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 378e2fd700d4aa539be223a9f7c06f6883dd0c3667815240ba733959f7d5cf0e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "378e2fd700d4aa539be223a9f7c06f6883dd0c3667815240ba733959f7d5cf0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "378e2fd700d4aa539be223a9f7c06f6883dd0c3667815240ba733959f7d5cf0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "378e2fd700d4aa539be223a9f7c06f6883dd0c3667815240ba733959f7d5cf0e", kill_on_drop: false }`
[INFO] [stdout] 378e2fd700d4aa539be223a9f7c06f6883dd0c3667815240ba733959f7d5cf0e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] acddedcef6d860900bca5e31f756da5a1abf7f90fb4143d0641f51b299f0e678
[INFO] running `Command { std: "docker" "start" "-a" "acddedcef6d860900bca5e31f756da5a1abf7f90fb4143d0641f51b299f0e678", kill_on_drop: false }`
[INFO] [stderr]    Compiling either v1.6.0
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling untitled v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `num_bigint`
[INFO] [stdout]  --> src/big_integer.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use num_bigint::BigUint;
[INFO] [stdout]   |     ^^^^^^^^^^ use of undeclared crate or module `num_bigint`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `untitled` due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "acddedcef6d860900bca5e31f756da5a1abf7f90fb4143d0641f51b299f0e678", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acddedcef6d860900bca5e31f756da5a1abf7f90fb4143d0641f51b299f0e678", kill_on_drop: false }`
[INFO] [stdout] acddedcef6d860900bca5e31f756da5a1abf7f90fb4143d0641f51b299f0e678