[INFO] cloning repository https://github.com/vorner/mandel
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vorner/mandel" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvorner%2Fmandel", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvorner%2Fmandel'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fee271a05e2a124834e13a1362f233e8ea3a33c1
[INFO] checking vorner/mandel against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvorner%2Fmandel" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vorner/mandel on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vorner/mandel
[INFO] finished tweaking git repo https://github.com/vorner/mandel
[INFO] tweaked toml for git repo https://github.com/vorner/mandel written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/vorner/mandel already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2f6f5e537e0074c1a74758e88bb834185c8c758cd426aee32cb71a55c9d8c537
[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" "2f6f5e537e0074c1a74758e88bb834185c8c758cd426aee32cb71a55c9d8c537", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f6f5e537e0074c1a74758e88bb834185c8c758cd426aee32cb71a55c9d8c537", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f6f5e537e0074c1a74758e88bb834185c8c758cd426aee32cb71a55c9d8c537", kill_on_drop: false }`
[INFO] [stdout] 2f6f5e537e0074c1a74758e88bb834185c8c758cd426aee32cb71a55c9d8c537
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c1d816127108ff9507703650dc725356eda7e28ea4eb5bfe34a8360a99f6012d
[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" "c1d816127108ff9507703650dc725356eda7e28ea4eb5bfe34a8360a99f6012d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]    Compiling packed_simd v0.3.3 (https://github.com/rust-lang/packed_simd#efc71ad7)
[INFO] [stderr]     Checking oorandom v11.1.2
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking serde_cbor v0.11.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking slipstream v0.1.1
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking plotters v0.2.15
[INFO] [stderr]     Checking image v0.23.9
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking criterion-plot v0.4.3
[INFO] [stderr]     Checking tinytemplate v1.1.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/packed_simd-1d87ffd8ef2d698a/efc71ad/src/lib.rs:202:1
[INFO] [stdout]     |
[INFO] [stdout] 202 | / #![feature(
[INFO] [stdout] 203 | |     repr_simd,
[INFO] [stdout] 204 | |     const_fn,
[INFO] [stdout] 205 | |     platform_intrinsics,
[INFO] [stdout] ...   |
[INFO] [stdout] 213 | |     custom_inner_attributes
[INFO] [stdout] 214 | | )]
[INFO] [stdout]     | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling multiversion-macros v0.6.1
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]     Checking multiversion v0.6.1
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `packed_simd`
[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" "c1d816127108ff9507703650dc725356eda7e28ea4eb5bfe34a8360a99f6012d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1d816127108ff9507703650dc725356eda7e28ea4eb5bfe34a8360a99f6012d", kill_on_drop: false }`
[INFO] [stdout] c1d816127108ff9507703650dc725356eda7e28ea4eb5bfe34a8360a99f6012d