[INFO] crate slab-alloc 0.1.1 is already in cache
[INFO] checking slab-alloc-0.1.1 against master#ba72b15666b2491415aec703a02c2364fe5e2790 for pr-71140
[INFO] extracting crate slab-alloc 0.1.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate slab-alloc 0.1.1 on toolchain ba72b15666b2491415aec703a02c2364fe5e2790
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate slab-alloc 0.1.1
[INFO] finished tweaking crates.io crate slab-alloc 0.1.1
[INFO] tweaked toml for crates.io crate slab-alloc 0.1.1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "/opt/rustwide/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e3fd60f07ef28c8c3ded852130c7d8b89e3f7ea5f9b962c9b53639d6eaf197e7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "e3fd60f07ef28c8c3ded852130c7d8b89e3f7ea5f9b962c9b53639d6eaf197e7"`
[INFO] [stderr]     Checking spin v0.4.10
[INFO] [stderr]     Checking object-alloc v0.1.0
[INFO] [stderr]    Compiling interpolate_idents v0.1.8
[INFO] [stderr]     Checking sysconf v0.3.4
[INFO] [stderr]     Checking twox-hash v1.5.0
[INFO] [stderr] error[E0462]: found staticlib `rustc` instead of rlib or dylib
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/interpolate_idents-0.1.8/src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | extern crate rustc;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = help: please recompile that crate using --crate-type lib
[INFO] [stderr]   = note: the following crate versions were found:
[INFO] [stderr]           crate `rustc`: /opt/rustwide/rustup-home/toolchains/ba72b15666b2491415aec703a02c2364fe5e2790/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.asan.a
[INFO] [stderr]           crate `rustc`: /opt/rustwide/rustup-home/toolchains/ba72b15666b2491415aec703a02c2364fe5e2790/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.tsan.a
[INFO] [stderr]           crate `rustc`: /opt/rustwide/rustup-home/toolchains/ba72b15666b2491415aec703a02c2364fe5e2790/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.msan.a
[INFO] [stderr]           crate `rustc`: /opt/rustwide/rustup-home/toolchains/ba72b15666b2491415aec703a02c2364fe5e2790/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc-nightly_rt.lsan.a
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `alloc::allocator`
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/object-alloc-0.1.0/src/lib.rs:12:12
[INFO] [stderr]    |
[INFO] [stderr] 12 | use alloc::allocator::Layout;
[INFO] [stderr]    |            ^^^^^^^^^ could not find `allocator` in `alloc`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `interpolate_idents`.
[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: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0432`.
[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 `"docker" "inspect" "e3fd60f07ef28c8c3ded852130c7d8b89e3f7ea5f9b962c9b53639d6eaf197e7"`
[INFO] running `"docker" "rm" "-f" "e3fd60f07ef28c8c3ded852130c7d8b89e3f7ea5f9b962c9b53639d6eaf197e7"`
[INFO] [stdout] e3fd60f07ef28c8c3ded852130c7d8b89e3f7ea5f9b962c9b53639d6eaf197e7