[INFO] fetching crate slabmalloc 0.7.0... [INFO] checking slabmalloc-0.7.0 against master#3aedcf06b73fc36feeebca3d579e1d2a6c40acc5 for pr-65819 [INFO] extracting crate slabmalloc 0.7.0 into /workspace/builds/worker-3/source [INFO] validating manifest of crates.io crate slabmalloc 0.7.0 on toolchain 3aedcf06b73fc36feeebca3d579e1d2a6c40acc5 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate slabmalloc 0.7.0 [INFO] finished tweaking crates.io crate slabmalloc 0.7.0 [INFO] tweaked toml for crates.io crate slabmalloc 0.7.0 written to /workspace/builds/worker-3/source/Cargo.toml [INFO] crate crates.io crate slabmalloc 0.7.0 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 01d5b7821c033a82706d38474988c233ea1eb4de50578926aa32c187207c7cb1 [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" "01d5b7821c033a82706d38474988c233ea1eb4de50578926aa32c187207c7cb1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "01d5b7821c033a82706d38474988c233ea1eb4de50578926aa32c187207c7cb1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "01d5b7821c033a82706d38474988c233ea1eb4de50578926aa32c187207c7cb1", kill_on_drop: false }` [INFO] [stdout] 01d5b7821c033a82706d38474988c233ea1eb4de50578926aa32c187207c7cb1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "check" "--frozen" "--all" "--all-targets" "--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] 60e2045542e2e0b31b1dc173a66969612cfc40cd640c9a5aa7263e63597d4641 [INFO] running `Command { std: "docker" "start" "-a" "60e2045542e2e0b31b1dc173a66969612cfc40cd640c9a5aa7263e63597d4641", kill_on_drop: false }` [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Compiling getrandom v0.1.13 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Checking ppv-lite86 v0.2.6 [INFO] [stderr] Checking spin v0.5.2 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking regex v1.3.1 [INFO] [stderr] Checking c2-chacha v0.2.3 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking slabmalloc v0.7.0 (/opt/rustwide/workdir) [INFO] [stderr] Checking rand_chacha v0.2.1 [INFO] [stdout] error[E0658]: mutable references are not allowed in constant functions [INFO] [stdout] --> src/pages.rs:349:19 [INFO] [stdout] | [INFO] [stdout] 349 | head: None, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #57349 for more information [INFO] [stdout] = help: add `#![feature(const_mut_refs)]` to the crate attributes to enable [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking rand v0.7.2 [INFO] [stdout] error: aborting due to previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0658`. [INFO] [stdout] [INFO] [stderr] error: could not compile `slabmalloc` [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" "60e2045542e2e0b31b1dc173a66969612cfc40cd640c9a5aa7263e63597d4641", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "60e2045542e2e0b31b1dc173a66969612cfc40cd640c9a5aa7263e63597d4641", kill_on_drop: false }` [INFO] [stdout] 60e2045542e2e0b31b1dc173a66969612cfc40cd640c9a5aa7263e63597d4641