[INFO] crate elfmalloc 0.1.0 is already in cache
[INFO] testing elfmalloc-0.1.0 against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] extracting crate elfmalloc 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate elfmalloc 0.1.0 on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate elfmalloc 0.1.0
[INFO] finished tweaking crates.io crate elfmalloc 0.1.0
[INFO] tweaked toml for crates.io crate elfmalloc 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f3cab79abe12db659a83f16bea0a8c8f23407c789af546d455942379a92e2e5b
[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" "f3cab79abe12db659a83f16bea0a8c8f23407c789af546d455942379a92e2e5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f3cab79abe12db659a83f16bea0a8c8f23407c789af546d455942379a92e2e5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3cab79abe12db659a83f16bea0a8c8f23407c789af546d455942379a92e2e5b", kill_on_drop: false }`
[INFO] [stdout] f3cab79abe12db659a83f16bea0a8c8f23407c789af546d455942379a92e2e5b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "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] 77163f931e5f904173af8fc3b22472f8e23e95357875a977ec7d9c5f9d4fe36e
[INFO] running `Command { std: "docker" "start" "-a" "77163f931e5f904173af8fc3b22472f8e23e95357875a977ec7d9c5f9d4fe36e", kill_on_drop: false }`
[INFO] [stderr]    Compiling object-alloc v0.1.0
[INFO] [stderr]    Compiling spin v0.4.10
[INFO] [stderr]    Compiling crossbeam v0.2.12
[INFO] [stderr]    Compiling errno v0.2.6
[INFO] [stdout] error[E0432]: unresolved import `alloc::allocator`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/object-alloc-0.1.0/src/lib.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | use alloc::allocator::Layout;
[INFO] [stdout]    |            ^^^^^^^^^ could not find `allocator` in `alloc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `object-alloc`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "77163f931e5f904173af8fc3b22472f8e23e95357875a977ec7d9c5f9d4fe36e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77163f931e5f904173af8fc3b22472f8e23e95357875a977ec7d9c5f9d4fe36e", kill_on_drop: false }`
[INFO] [stdout] 77163f931e5f904173af8fc3b22472f8e23e95357875a977ec7d9c5f9d4fe36e