[INFO] updating cached repository https://github.com/fiji-flo/common-voice-yotp
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/fiji-flo/common-voice-yotp
[INFO] [stderr]    1da7ba4..f054ea9  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f054ea94bc81c6e26da865a14ce4a2b46aca71ad
[INFO] testing fiji-flo/common-voice-yotp against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffiji-flo%2Fcommon-voice-yotp" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] [stderr] Checking out files:  88% (31/35)   
Checking out files:  91% (32/35)   
Checking out files:  94% (33/35)   
Checking out files:  97% (34/35)   
Checking out files: 100% (35/35)   
Checking out files: 100% (35/35), done.
[INFO] validating manifest of git repo https://github.com/fiji-flo/common-voice-yotp on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/fiji-flo/common-voice-yotp
[INFO] finished tweaking git repo https://github.com/fiji-flo/common-voice-yotp
[INFO] tweaked toml for git repo https://github.com/fiji-flo/common-voice-yotp written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/fiji-flo/common-voice-yotp 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] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 90b6fdd41f16b2bc00237354d618ff388152601765cb3350a044ec81caf100ce
[INFO] running `"docker" "start" "-a" "90b6fdd41f16b2bc00237354d618ff388152601765cb3350a044ec81caf100ce"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling rust-freqdist v0.1.5
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling regex v1.3.3
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]    Compiling phf_macros v0.7.24
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling phf v0.7.24
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling punkt v1.0.5
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/punkt-1.0.5/src/lib.rs:141:1
[INFO] [stderr]     |
[INFO] [stderr] 141 | #![feature(proc_macro_hygiene)]
[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 `punkt`.
[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 `"docker" "inspect" "90b6fdd41f16b2bc00237354d618ff388152601765cb3350a044ec81caf100ce"`
[INFO] running `"docker" "rm" "-f" "90b6fdd41f16b2bc00237354d618ff388152601765cb3350a044ec81caf100ce"`
[INFO] [stdout] 90b6fdd41f16b2bc00237354d618ff388152601765cb3350a044ec81caf100ce