[INFO] crate wtf-rlsr 1.1.1 is already in cache
[INFO] testing wtf-rlsr-1.1.1 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate wtf-rlsr 1.1.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate wtf-rlsr 1.1.1 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate wtf-rlsr 1.1.1
[INFO] finished tweaking crates.io crate wtf-rlsr 1.1.1
[INFO] tweaked toml for crates.io crate wtf-rlsr 1.1.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate wtf-rlsr 1.1.1 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta-2020-06-03" "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] f05c7d529e97f90d8f38131456a71d6715f4631fd1445425d7c17789921ede1d
[INFO] running `"docker" "start" "-a" "f05c7d529e97f90d8f38131456a71d6715f4631fd1445425d7c17789921ede1d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]    Compiling curl v0.4.25
[INFO] [stderr]    Compiling shell-escape v0.1.4
[INFO] [stderr]    Compiling rustc-workspace-hack v1.0.0
[INFO] [stderr]    Compiling home v0.5.1
[INFO] [stderr]    Compiling opener v0.4.1
[INFO] [stderr]    Compiling bytesize v1.0.0
[INFO] [stderr]    Compiling pathdiff v0.1.0
[INFO] [stderr]    Compiling fs_extra v1.1.0
[INFO] [stderr]    Compiling hashbrown v0.6.3
[INFO] [stderr]    Compiling crossbeam-channel v0.3.9
[INFO] [stderr]    Compiling strip-ansi-escapes v0.1.0
[INFO] [stderr]    Compiling bstr v0.2.8
[INFO] [stderr]    Compiling socket2 v0.3.11
[INFO] [stderr]    Compiling filetime v0.2.8
[INFO] [stderr]    Compiling dirs-sys v0.3.4
[INFO] [stderr]    Compiling fs2 v0.4.3
[INFO] [stderr]    Compiling url v2.1.0
[INFO] [stderr]    Compiling sized-chunks v0.3.1
[INFO] [stderr]    Compiling colored v1.9.1
[INFO] [stderr]    Compiling jobserver v0.1.17
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling console v0.9.1
[INFO] [stderr]    Compiling chrono v0.4.10
[INFO] [stderr]    Compiling tar v0.4.26
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling cc v1.0.48
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling dialoguer v0.5.0
[INFO] [stderr]    Compiling globset v0.4.4
[INFO] [stderr]    Compiling openssl-sys v0.9.53
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling libssh2-sys v0.2.13
[INFO] [stderr]    Compiling curl-sys v0.4.24
[INFO] [stderr]    Compiling libgit2-sys v0.9.2
[INFO] [stderr]    Compiling ignore v0.4.10
[INFO] [stderr]    Compiling pretty_env_logger v0.3.1
[INFO] [stderr]    Compiling flate2 v1.0.13
[INFO] [stderr]    Compiling backtrace v0.3.40
[INFO] [stderr]    Compiling openssl v0.10.26
[INFO] [stderr]    Compiling crypto-hash v0.3.4
[INFO] [stderr]    Compiling git2 v0.10.2
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling syn-mid v0.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling rustversion v1.0.1
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling git2-curl v0.11.0
[INFO] [stderr]    Compiling failure v0.1.6
[INFO] [stderr]    Compiling proc-macro-error v0.4.4
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.3
[INFO] [stderr]    Compiling const-random-macro v0.1.6
[INFO] [stderr]    Compiling which v3.1.0
[INFO] [stderr]    Compiling const-random v0.1.6
[INFO] [stderr]    Compiling ahash v0.2.18
[INFO] [stderr]    Compiling structopt-derive v0.4.0
[INFO] [stderr]    Compiling structopt v0.3.7
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling serde_json v1.0.44
[INFO] [stderr]    Compiling serde_ignored v0.1.1
[INFO] [stderr]    Compiling toml v0.5.5
[INFO] [stderr]    Compiling cargo-platform v0.1.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling im-rc v13.0.0
[INFO] [stderr]    Compiling crates-io v0.29.0
[INFO] [stderr]    Compiling rustfix v0.4.6
[INFO] [stderr]    Compiling cargo v0.41.0
[INFO] [stderr]    Compiling wtf-rlsr v1.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(str_strip, try_trait)]
[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 `wtf-rlsr`.
[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" "f05c7d529e97f90d8f38131456a71d6715f4631fd1445425d7c17789921ede1d"`
[INFO] running `"docker" "rm" "-f" "f05c7d529e97f90d8f38131456a71d6715f4631fd1445425d7c17789921ede1d"`
[INFO] [stdout] f05c7d529e97f90d8f38131456a71d6715f4631fd1445425d7c17789921ede1d