[INFO] fetching crate umm-malloc 0.2.0...
[INFO] testing umm-malloc-0.2.0 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate umm-malloc 0.2.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate umm-malloc 0.2.0 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate umm-malloc 0.2.0
[INFO] finished tweaking crates.io crate umm-malloc 0.2.0
[INFO] tweaked toml for crates.io crate umm-malloc 0.2.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate umm-malloc 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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] f54a2ece46468183fb4402d0514403f1f5b43a7969ce364a8ab48255e00c70fe
[INFO] running `Command { std: "docker" "start" "-a" "f54a2ece46468183fb4402d0514403f1f5b43a7969ce364a8ab48255e00c70fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f54a2ece46468183fb4402d0514403f1f5b43a7969ce364a8ab48255e00c70fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f54a2ece46468183fb4402d0514403f1f5b43a7969ce364a8ab48255e00c70fe", kill_on_drop: false }`
[INFO] [stdout] f54a2ece46468183fb4402d0514403f1f5b43a7969ce364a8ab48255e00c70fe
[INFO] running `Command { std: "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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5f0f3c8b89c6921898ad174757f203a8cdd3068098782e9140aae22fff9bc29c
[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" "5f0f3c8b89c6921898ad174757f203a8cdd3068098782e9140aae22fff9bc29c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling radium v0.5.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling funty v1.1.0
[INFO] [stderr]    Compiling wyz v0.2.0
[INFO] [stderr]    Compiling tap v1.0.1
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling bindgen v0.59.1
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling shlex v1.0.0
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]    Compiling nom v6.2.1
[INFO] [stderr]    Compiling libloading v0.7.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling bitvec v0.19.5
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clang-sys v1.2.0
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling regex v1.4.6
[INFO] [stderr]    Compiling env_logger v0.8.4
[INFO] [stderr]    Compiling cexpr v0.5.0
[INFO] [stderr]    Compiling umm-malloc-sys v0.2.0
[INFO] [stderr]    Compiling umm-malloc v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: A critical section cargo feature must be enabled
[INFO] [stdout]    --> src/lib.rs:155:5
[INFO] [stdout]     |
[INFO] [stdout] 155 |     compile_error!("A critical section cargo feature must be enabled");
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `umm-malloc` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "5f0f3c8b89c6921898ad174757f203a8cdd3068098782e9140aae22fff9bc29c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f0f3c8b89c6921898ad174757f203a8cdd3068098782e9140aae22fff9bc29c", kill_on_drop: false }`
[INFO] [stdout] 5f0f3c8b89c6921898ad174757f203a8cdd3068098782e9140aae22fff9bc29c