[INFO] crate rpa 0.4.0 is already in cache
[INFO] testing rpa-0.4.0 against 1.45.2 for beta-1.46-1
[INFO] extracting crate rpa 0.4.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate rpa 0.4.0 on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rpa 0.4.0
[INFO] finished tweaking crates.io crate rpa 0.4.0
[INFO] tweaked toml for crates.io crate rpa 0.4.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b19b08f445a955b3f15a92b6b02b2f6ae89a9fdf06a83e1d5f94ceab3dada133
[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" "b19b08f445a955b3f15a92b6b02b2f6ae89a9fdf06a83e1d5f94ceab3dada133", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b19b08f445a955b3f15a92b6b02b2f6ae89a9fdf06a83e1d5f94ceab3dada133", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b19b08f445a955b3f15a92b6b02b2f6ae89a9fdf06a83e1d5f94ceab3dada133", kill_on_drop: false }`
[INFO] [stdout] b19b08f445a955b3f15a92b6b02b2f6ae89a9fdf06a83e1d5f94ceab3dada133
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d00ecd5ce6f6f4bd50d1f68c44c1bd322dfd1122af8d0dce396f2846683958dd
[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" "d00ecd5ce6f6f4bd50d1f68c44c1bd322dfd1122af8d0dce396f2846683958dd", kill_on_drop: false }`
[INFO] [stderr]    Compiling yansi v0.5.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling subtle v2.2.3
[INFO] [stderr]    Compiling zeroize v1.1.0
[INFO] [stderr]    Compiling traitobject v0.1.0
[INFO] [stderr]    Compiling state v0.4.1
[INFO] [stderr]    Compiling type-info v0.2.1
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]    Compiling mysqlclient-sys v0.2.4
[INFO] [stderr]    Compiling parking_lot_core v0.8.0
[INFO] [stderr]    Compiling inotify-sys v0.1.3
[INFO] [stderr]    Compiling filetime v0.2.12
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/type-info-0.2.1/src/lib.rs:107:1
[INFO] [stdout]     |
[INFO] [stdout] 107 | #![feature(const_type_id)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/type-info-0.2.1/src/lib.rs:108:1
[INFO] [stdout]     |
[INFO] [stdout] 108 | #![feature(specialization)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling block-cipher-trait v0.6.2
[INFO] [stderr]    Compiling aead v0.2.0
[INFO] [stderr]    Compiling mio-extras v2.0.6
[INFO] [stderr]    Compiling inotify v0.7.1
[INFO] [stderr]    Compiling universal-hash v0.3.0
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `type-info`.
[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 `Command { std: "docker" "inspect" "d00ecd5ce6f6f4bd50d1f68c44c1bd322dfd1122af8d0dce396f2846683958dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d00ecd5ce6f6f4bd50d1f68c44c1bd322dfd1122af8d0dce396f2846683958dd", kill_on_drop: false }`
[INFO] [stdout] d00ecd5ce6f6f4bd50d1f68c44c1bd322dfd1122af8d0dce396f2846683958dd