[INFO] cloning repository https://github.com/xinyu-zheng/umalloc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xinyu-zheng/umalloc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxinyu-zheng%2Fumalloc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxinyu-zheng%2Fumalloc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] feeb120703fea7a81fb52c0a92a1d1c68c7b7442
[INFO] checking xinyu-zheng/umalloc against try#18c1d185ac7a6a3bf399296b35e4b2736809a756 for pr-146972
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxinyu-zheng%2Fumalloc" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-7-tc2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/xinyu-zheng/umalloc
[INFO] finished tweaking git repo https://github.com/xinyu-zheng/umalloc
[INFO] tweaked toml for git repo https://github.com/xinyu-zheng/umalloc written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/xinyu-zheng/umalloc on toolchain 18c1d185ac7a6a3bf399296b35e4b2736809a756
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/xinyu-zheng/umalloc 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" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: ignoring `public` on dependency libc, pass `-Zpublic-dependency` to enable support for it
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 676fdaa79a715ef9a4d2db573273b19d43e084b37bdef739541374740c8e5152
[INFO] running `Command { std: "docker" "start" "-a" "676fdaa79a715ef9a4d2db573273b19d43e084b37bdef739541374740c8e5152", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "676fdaa79a715ef9a4d2db573273b19d43e084b37bdef739541374740c8e5152", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "676fdaa79a715ef9a4d2db573273b19d43e084b37bdef739541374740c8e5152", kill_on_drop: false }`
[INFO] [stdout] 676fdaa79a715ef9a4d2db573273b19d43e084b37bdef739541374740c8e5152
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b6ba91e99664b5286a3b081a1c1fb16c3659a84994580c7626cc8e7f4f9eb26a
[INFO] running `Command { std: "docker" "start" "-a" "b6ba91e99664b5286a3b081a1c1fb16c3659a84994580c7626cc8e7f4f9eb26a", kill_on_drop: false }`
[INFO] [stderr] warning: ignoring `public` on dependency libc, pass `-Zpublic-dependency` to enable support for it
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]     Checking rustc-std-workspace-core v1.0.1
[INFO] [stderr]     Checking umalloc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0429]: `self` imports are only allowed within a { } list
[INFO] [stdout]  --> src/lib.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 |     cmp::self,
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing the module directly
[INFO] [stdout]   |
[INFO] [stdout] 6 -     cmp::self,
[INFO] [stdout] 6 +     cmp,
[INFO] [stdout]   |
[INFO] [stdout] help: alternatively, use the multi-path `use` syntax to import `self`
[INFO] [stdout]   |
[INFO] [stdout] 6 |     cmp::{self},
[INFO] [stdout]   |          +    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `cmp::self` and `self`
[INFO] [stdout]  --> src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     cmp::self,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 7 |     ptr::{self, NonNull},
[INFO] [stdout]   |           ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0429`.
[INFO] [stdout] 
[INFO] [stdout] error[E0429]: `self` imports are only allowed within a { } list
[INFO] [stdout]  --> src/lib.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 |     cmp::self,
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing the module directly
[INFO] [stdout]   |
[INFO] [stdout] 6 -     cmp::self,
[INFO] [stdout] 6 +     cmp,
[INFO] [stdout]   |
[INFO] [stdout] help: alternatively, use the multi-path `use` syntax to import `self`
[INFO] [stdout]   |
[INFO] [stdout] 6 |     cmp::{self},
[INFO] [stdout]   |          +    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `umalloc` (lib) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused imports: `cmp::self` and `self`
[INFO] [stdout]  --> src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     cmp::self,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 7 |     ptr::{self, NonNull},
[INFO] [stdout]   |           ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0429`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `umalloc` (lib test) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "b6ba91e99664b5286a3b081a1c1fb16c3659a84994580c7626cc8e7f4f9eb26a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6ba91e99664b5286a3b081a1c1fb16c3659a84994580c7626cc8e7f4f9eb26a", kill_on_drop: false }`
[INFO] [stdout] b6ba91e99664b5286a3b081a1c1fb16c3659a84994580c7626cc8e7f4f9eb26a