[INFO] crate fozzie 1.3.0 is already in cache
[INFO] testing fozzie-1.3.0 against 1.44.0 for beta-1.45-1
[INFO] extracting crate fozzie 1.3.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate fozzie 1.3.0 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 fozzie 1.3.0
[INFO] finished tweaking crates.io crate fozzie 1.3.0
[INFO] tweaked toml for crates.io crate fozzie 1.3.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate fozzie 1.3.0 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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=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] 00cf2b2c6c2e97e34a926e19aee3adfa40e641a460860398bf776fb0fba60a85
[INFO] running `"docker" "start" "-a" "00cf2b2c6c2e97e34a926e19aee3adfa40e641a460860398bf776fb0fba60a85"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling term_size v1.0.0-beta1
[INFO] [stderr]    Compiling termion v1.5.5
[INFO] [stderr]    Compiling clap v2.33.1
[INFO] [stderr]    Compiling float-cmp v0.8.0
[INFO] [stderr]    Compiling regex v1.3.7
[INFO] [stderr]    Compiling derive_more v0.14.1
[INFO] [stderr]    Compiling fozzie v1.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling raw_tty v0.1.0
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![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 `fozzie`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "00cf2b2c6c2e97e34a926e19aee3adfa40e641a460860398bf776fb0fba60a85"`
[INFO] running `"docker" "rm" "-f" "00cf2b2c6c2e97e34a926e19aee3adfa40e641a460860398bf776fb0fba60a85"`
[INFO] [stdout] 00cf2b2c6c2e97e34a926e19aee3adfa40e641a460860398bf776fb0fba60a85