[INFO] updating cached repository https://github.com/Freax13/async-trait-ext
[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/Freax13/async-trait-ext
[INFO] [stderr]    a8b98ee..451d4d6  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 451d4d66745fae00ea09ea8f59e3254151910c53
[INFO] testing Freax13/async-trait-ext against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFreax13%2Fasync-trait-ext" "/workspace/builds/worker-12/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Freax13/async-trait-ext 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 git repo https://github.com/Freax13/async-trait-ext
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/Freax13/async-trait-ext
[INFO] tweaked toml for git repo https://github.com/Freax13/async-trait-ext written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/Freax13/async-trait-ext 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]  Downloading crates ...
[INFO] [stderr]   Downloaded macro-input-core v0.1.0
[INFO] [stderr]   Downloaded macro-compose v0.1.0
[INFO] [stderr]   Downloaded macro-input-macros v0.1.0
[INFO] [stderr]   Downloaded macro-input v0.1.0
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] a78ccdb319e24deff3de2b889735fb1bbd40df0cb954ef403bf27a22dbc7aacb
[INFO] running `"docker" "start" "-a" "a78ccdb319e24deff3de2b889735fb1bbd40df0cb954ef403bf27a22dbc7aacb"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.27
[INFO] [stderr]    Compiling macro-compose v0.1.0
[INFO] [stderr]    Compiling macro-input-core v0.1.0
[INFO] [stderr]    Compiling macro-input-macros v0.1.0
[INFO] [stderr]    Compiling macro-input v0.1.0
[INFO] [stderr]    Compiling async-trait-ext v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.43s
[INFO] running `"docker" "inspect" "a78ccdb319e24deff3de2b889735fb1bbd40df0cb954ef403bf27a22dbc7aacb"`
[INFO] running `"docker" "rm" "-f" "a78ccdb319e24deff3de2b889735fb1bbd40df0cb954ef403bf27a22dbc7aacb"`
[INFO] [stdout] a78ccdb319e24deff3de2b889735fb1bbd40df0cb954ef403bf27a22dbc7aacb
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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] 0796232229ab2fd645e483d57014253ab32c4840b1855dbf4d880d5fe0a3aaa0
[INFO] running `"docker" "start" "-a" "0796232229ab2fd645e483d57014253ab32c4840b1855dbf4d880d5fe0a3aaa0"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling async-trait-ext v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> tests/mut_pattern.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(type_alias_impl_trait)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> tests/examples.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(type_alias_impl_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 `async-trait-ext`.
[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: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "0796232229ab2fd645e483d57014253ab32c4840b1855dbf4d880d5fe0a3aaa0"`
[INFO] running `"docker" "rm" "-f" "0796232229ab2fd645e483d57014253ab32c4840b1855dbf4d880d5fe0a3aaa0"`
[INFO] [stdout] 0796232229ab2fd645e483d57014253ab32c4840b1855dbf4d880d5fe0a3aaa0