[INFO] fetching crate neweden 0.1.1...
[INFO] testing neweden-0.1.1 against 1.44.0 for beta-1.45-1
[INFO] extracting crate neweden 0.1.1 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate neweden 0.1.1 on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate neweden 0.1.1
[INFO] finished tweaking crates.io crate neweden 0.1.1
[INFO] tweaked toml for crates.io crate neweden 0.1.1 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d8b4da17e667c15d11c3dd3a9ece354e2a1a0c3aed6b1cdf4d528bef21847bff
[INFO] running `"docker" "start" "-a" "d8b4da17e667c15d11c3dd3a9ece354e2a1a0c3aed6b1cdf4d528bef21847bff"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]    Compiling anyhow v1.0.31
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling pdqselect v0.1.0
[INFO] [stderr]    Compiling fixedbitset v0.2.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling indexmap v1.4.0
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]    Compiling rstar v0.7.1
[INFO] [stderr]    Compiling pathfinding v2.0.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.19
[INFO] [stderr]    Compiling thiserror v1.0.19
[INFO] [stderr]    Compiling neweden v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.59s
[INFO] running `"docker" "inspect" "d8b4da17e667c15d11c3dd3a9ece354e2a1a0c3aed6b1cdf4d528bef21847bff"`
[INFO] running `"docker" "rm" "-f" "d8b4da17e667c15d11c3dd3a9ece354e2a1a0c3aed6b1cdf4d528bef21847bff"`
[INFO] [stdout] d8b4da17e667c15d11c3dd3a9ece354e2a1a0c3aed6b1cdf4d528bef21847bff
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bc106d80eac1dd13779f5e04f9146ee30fce32efc1a2664f32f06da6c6ad1dff
[INFO] running `"docker" "start" "-a" "bc106d80eac1dd13779f5e04f9146ee30fce32efc1a2664f32f06da6c6ad1dff"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling neweden v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:5:19
[INFO] [stderr]   |
[INFO] [stderr] 5 | #![cfg_attr(test, feature(test))]
[INFO] [stderr]   |                   ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `neweden`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "bc106d80eac1dd13779f5e04f9146ee30fce32efc1a2664f32f06da6c6ad1dff"`
[INFO] running `"docker" "rm" "-f" "bc106d80eac1dd13779f5e04f9146ee30fce32efc1a2664f32f06da6c6ad1dff"`
[INFO] [stdout] bc106d80eac1dd13779f5e04f9146ee30fce32efc1a2664f32f06da6c6ad1dff