[INFO] crate cex 0.4.0 is already in cache
[INFO] testing cex-0.4.0 against beta-2020-07-24 for beta-1.46-1
[INFO] extracting crate cex 0.4.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate cex 0.4.0 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cex 0.4.0
[INFO] finished tweaking crates.io crate cex 0.4.0
[INFO] tweaked toml for crates.io crate cex 0.4.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9d6a6f6277ea67d1ecf86583f071cbbf0ba36086eaa1db4abbfb8b7aacea37a8
[INFO] running `Command { std: "docker" "start" "-a" "9d6a6f6277ea67d1ecf86583f071cbbf0ba36086eaa1db4abbfb8b7aacea37a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d6a6f6277ea67d1ecf86583f071cbbf0ba36086eaa1db4abbfb8b7aacea37a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d6a6f6277ea67d1ecf86583f071cbbf0ba36086eaa1db4abbfb8b7aacea37a8", kill_on_drop: false }`
[INFO] [stdout] 9d6a6f6277ea67d1ecf86583f071cbbf0ba36086eaa1db4abbfb8b7aacea37a8
[INFO] running `Command { std: "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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 23c68456eab4602f5451ee70524bb38e1fdaa3a3c88f7ea4a95739f6c679e17f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "23c68456eab4602f5451ee70524bb38e1fdaa3a3c88f7ea4a95739f6c679e17f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.37
[INFO] [stderr]    Compiling enumx v0.3.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling enumx_derive v0.3.1
[INFO] [stderr]    Compiling cex_derive v0.4.0
[INFO] [stderr]    Compiling cex v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.79s
[INFO] running `Command { std: "docker" "inspect" "23c68456eab4602f5451ee70524bb38e1fdaa3a3c88f7ea4a95739f6c679e17f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23c68456eab4602f5451ee70524bb38e1fdaa3a3c88f7ea4a95739f6c679e17f", kill_on_drop: false }`
[INFO] [stdout] 23c68456eab4602f5451ee70524bb38e1fdaa3a3c88f7ea4a95739f6c679e17f
[INFO] running `Command { std: "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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c1d00869488c3284cdff24b56e11e0138f778bff54c3e38a3cc1b403d77bee39
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c1d00869488c3284cdff24b56e11e0138f778bff54c3e38a3cc1b403d77bee39", kill_on_drop: false }`
[INFO] [stderr]    Compiling cex v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> tests/syntax.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr( test, feature( try_blocks ))]
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cex`.
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "c1d00869488c3284cdff24b56e11e0138f778bff54c3e38a3cc1b403d77bee39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1d00869488c3284cdff24b56e11e0138f778bff54c3e38a3cc1b403d77bee39", kill_on_drop: false }`
[INFO] [stdout] c1d00869488c3284cdff24b56e11e0138f778bff54c3e38a3cc1b403d77bee39