[INFO] fetching crate ub 0.1.0...
[INFO] building ub-0.1.0 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate ub 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate ub 0.1.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate ub 0.1.0
[INFO] tweaked toml for crates.io crate ub 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ub 0.1.0 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ub 0.1.0 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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2d18d025ca82ba619979c75f4fa376de8622c96aa74cce77fc46243e28ef898a
[INFO] running `Command { std: "docker" "start" "-a" "2d18d025ca82ba619979c75f4fa376de8622c96aa74cce77fc46243e28ef898a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d18d025ca82ba619979c75f4fa376de8622c96aa74cce77fc46243e28ef898a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d18d025ca82ba619979c75f4fa376de8622c96aa74cce77fc46243e28ef898a", kill_on_drop: false }`
[INFO] [stdout] 2d18d025ca82ba619979c75f4fa376de8622c96aa74cce77fc46243e28ef898a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dedd33a708d4cb4644cbab3e08c6a721223e5244bea52763453d0e2f909fa148
[INFO] running `Command { std: "docker" "start" "-a" "dedd33a708d4cb4644cbab3e08c6a721223e5244bea52763453d0e2f909fa148", kill_on_drop: false }`
[INFO] [stderr]    Compiling ub v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "dedd33a708d4cb4644cbab3e08c6a721223e5244bea52763453d0e2f909fa148", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dedd33a708d4cb4644cbab3e08c6a721223e5244bea52763453d0e2f909fa148", kill_on_drop: false }`
[INFO] [stdout] dedd33a708d4cb4644cbab3e08c6a721223e5244bea52763453d0e2f909fa148
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dc022fb1d2d1603c80fae4a59e5a76ab63ca2bcf7349371b44533ed9198aa9ca
[INFO] running `Command { std: "docker" "start" "-a" "dc022fb1d2d1603c80fae4a59e5a76ab63ca2bcf7349371b44533ed9198aa9ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling ub v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `Command { std: "docker" "inspect" "dc022fb1d2d1603c80fae4a59e5a76ab63ca2bcf7349371b44533ed9198aa9ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc022fb1d2d1603c80fae4a59e5a76ab63ca2bcf7349371b44533ed9198aa9ca", kill_on_drop: false }`
[INFO] [stdout] dc022fb1d2d1603c80fae4a59e5a76ab63ca2bcf7349371b44533ed9198aa9ca