[INFO] cloning repository https://github.com/zeta-lang/zeta
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zeta-lang/zeta" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzeta-lang%2Fzeta", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzeta-lang%2Fzeta'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b7cddcee3eac65d36153550148e8b5b55bc858ef
[INFO] testing zeta-lang/zeta against beta-2021-08-01 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzeta-lang%2Fzeta" "/workspace/builds/worker-19/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-19/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zeta-lang/zeta on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-19/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-19/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/zeta-lang/zeta
[INFO] finished tweaking git repo https://github.com/zeta-lang/zeta
[INFO] tweaked toml for git repo https://github.com/zeta-lang/zeta written to /workspace/builds/worker-19/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded peg-runtime v0.7.0
[INFO] [stderr]   Downloaded peg-macros v0.7.0
[INFO] [stderr]   Downloaded peg v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6a024d6c1aa0d13ab4e284a5f851666e93e3454e665ccddcbf9fdcbcb8730534
[INFO] running `Command { std: "docker" "start" "-a" "6a024d6c1aa0d13ab4e284a5f851666e93e3454e665ccddcbf9fdcbcb8730534", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a024d6c1aa0d13ab4e284a5f851666e93e3454e665ccddcbf9fdcbcb8730534", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a024d6c1aa0d13ab4e284a5f851666e93e3454e665ccddcbf9fdcbcb8730534", kill_on_drop: false }`
[INFO] [stdout] 6a024d6c1aa0d13ab4e284a5f851666e93e3454e665ccddcbf9fdcbcb8730534
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] db156cc7e55eabcfbfd5ba0f37817cc85037a9e9e31d600d06a0e7b3dc90fffd
[INFO] running `Command { std: "docker" "start" "-a" "db156cc7e55eabcfbfd5ba0f37817cc85037a9e9e31d600d06a0e7b3dc90fffd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling paste v1.0.5
[INFO] [stderr]    Compiling peg-runtime v0.7.0
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling zeta_log v0.2.0 (/opt/rustwide/workdir/crates/log)
[INFO] [stderr]    Compiling zeta_macros v0.2.0 (/opt/rustwide/workdir/crates/macros)
[INFO] [stderr]    Compiling zeta_common v0.2.0 (/opt/rustwide/workdir/crates/common)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> crates/common/src/lib.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout] 2  | / #![feature(
[INFO] [stdout] 3  | |     specialization,
[INFO] [stdout] 4  | |     const_panic,
[INFO] [stdout] 5  | |     maybe_uninit_ref,
[INFO] [stdout] ...  |
[INFO] [stdout] 12 | |     trait_alias
[INFO] [stdout] 13 | | )]
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[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 `zeta_common` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "db156cc7e55eabcfbfd5ba0f37817cc85037a9e9e31d600d06a0e7b3dc90fffd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db156cc7e55eabcfbfd5ba0f37817cc85037a9e9e31d600d06a0e7b3dc90fffd", kill_on_drop: false }`
[INFO] [stdout] db156cc7e55eabcfbfd5ba0f37817cc85037a9e9e31d600d06a0e7b3dc90fffd
