[INFO] cloning repository https://github.com/SlagHoedje/os
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SlagHoedje/os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSlagHoedje%2Fos"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSlagHoedje%2Fos'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c9a4b7cf0bf7e2303344f44a9e67e46108583744
[INFO] checking SlagHoedje/os against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSlagHoedje%2Fos" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SlagHoedje/os on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/SlagHoedje/os
[INFO] finished tweaking git repo https://github.com/SlagHoedje/os
[INFO] tweaked toml for git repo https://github.com/SlagHoedje/os written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/SlagHoedje/os already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded flagset v0.3.0
[INFO] [stderr]   Downloaded multiboot2 v0.8.1
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4dc33c8b47a1c47fa936d34fba151f6add24189f7b575c12d6316812e83bee2f
[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" "4dc33c8b47a1c47fa936d34fba151f6add24189f7b575c12d6316812e83bee2f"`
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking volatile v0.2.6
[INFO] [stderr]     Checking bit_field v0.10.0
[INFO] [stderr]     Checking flagset v0.3.0
[INFO] [stderr]     Checking linked_list_allocator v0.6.4
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr] error[E0432]: unresolved import `alloc::alloc::Alloc`
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/linked_list_allocator-0.6.4/src/lib.rs:14:20
[INFO] [stderr]    |
[INFO] [stderr] 14 | use alloc::alloc::{Alloc, AllocErr, Layout};
[INFO] [stderr]    |                    ^^^^^
[INFO] [stderr]    |                    |
[INFO] [stderr]    |                    no `Alloc` in `alloc`
[INFO] [stderr]    |                    help: a similar name exists in the module: `alloc`
[INFO] [stderr] 
[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 `linked_list_allocator`.
[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" "4dc33c8b47a1c47fa936d34fba151f6add24189f7b575c12d6316812e83bee2f"`
[INFO] running `"docker" "rm" "-f" "4dc33c8b47a1c47fa936d34fba151f6add24189f7b575c12d6316812e83bee2f"`
[INFO] [stdout] 4dc33c8b47a1c47fa936d34fba151f6add24189f7b575c12d6316812e83bee2f