[INFO] fetching crate buddy-allocator 0.3.1...
[INFO] checking buddy-allocator-0.3.1 against master#7b3a7819371cef92a187e9bac8f7810ccde15216 for pr-74846
[INFO] extracting crate buddy-allocator 0.3.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate buddy-allocator 0.3.1 on toolchain 7b3a7819371cef92a187e9bac8f7810ccde15216
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate buddy-allocator 0.3.1
[INFO] finished tweaking crates.io crate buddy-allocator 0.3.1
[INFO] tweaked toml for crates.io crate buddy-allocator 0.3.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "metadata" "--no-deps" "--format-version=1", 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] c944ca704c904ba50a6416a4e98daf2fbe531c5c685aafc49bfb03b3f723f5ee
[INFO] running `Command { std: "docker" "start" "-a" "c944ca704c904ba50a6416a4e98daf2fbe531c5c685aafc49bfb03b3f723f5ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c944ca704c904ba50a6416a4e98daf2fbe531c5c685aafc49bfb03b3f723f5ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c944ca704c904ba50a6416a4e98daf2fbe531c5c685aafc49bfb03b3f723f5ee", kill_on_drop: false }`
[INFO] [stdout] c944ca704c904ba50a6416a4e98daf2fbe531c5c685aafc49bfb03b3f723f5ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+7b3a7819371cef92a187e9bac8f7810ccde15216" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cdc50a060145efdfb17d25d241f6a329443f77d8719eea112dfaac7341d516ae
[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" "cdc50a060145efdfb17d25d241f6a329443f77d8719eea112dfaac7341d516ae", kill_on_drop: false }`
[INFO] [stderr]     Checking alloc-wg v0.9.0
[INFO] [stdout] error[E0405]: cannot find trait `LengthAtMost32` in module `core::array`
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/alloc-wg-0.9.0/src/boxed.rs:1035:26
[INFO] [stdout]      |
[INFO] [stdout] 1035 |     [T; N]: core::array::LengthAtMost32,
[INFO] [stdout]      |                          ^^^^^^^^^^^^^^ not found in `core::array`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `LengthAtMost32` in module `core::array`
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/alloc-wg-0.9.0/src/vec.rs:2635:81
[INFO] [stdout]      |
[INFO] [stdout] 2635 | __impl_slice_eq1! { [A, const N: usize] Vec<T, A>, [U; N], [U; N]: core::array::LengthAtMost32, A: AllocRef }
[INFO] [stdout]      |                                                                                 ^^^^^^^^^^^^^^ not found in `core::array`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0405]: cannot find trait `LengthAtMost32` in module `core::array`
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/alloc-wg-0.9.0/src/vec.rs:2636:82
[INFO] [stdout]      |
[INFO] [stdout] 2636 | __impl_slice_eq1! { [A, const N: usize] Vec<T, A>, &[U; N], [U; N]: core::array::LengthAtMost32, A: AllocRef }
[INFO] [stdout]      |                                                                                  ^^^^^^^^^^^^^^ not found in `core::array`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0405`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `alloc-wg`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "cdc50a060145efdfb17d25d241f6a329443f77d8719eea112dfaac7341d516ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdc50a060145efdfb17d25d241f6a329443f77d8719eea112dfaac7341d516ae", kill_on_drop: false }`
[INFO] [stdout] cdc50a060145efdfb17d25d241f6a329443f77d8719eea112dfaac7341d516ae