[INFO] cloning repository https://github.com/chmln/fut-err
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chmln/fut-err" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchmln%2Ffut-err", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchmln%2Ffut-err'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 97947046d157aa1c901118c1f25848dbb4d50ed5
[INFO] testing chmln/fut-err against beta-2023-04-20 for beta-1.70-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchmln%2Ffut-err" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chmln/fut-err on toolchain beta-2023-04-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/chmln/fut-err
[INFO] finished tweaking git repo https://github.com/chmln/fut-err
[INFO] tweaked toml for git repo https://github.com/chmln/fut-err written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/chmln/fut-err already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded futures-channel-preview v0.3.0-alpha.14
[INFO] [stderr]   Downloaded futures-executor-preview v0.3.0-alpha.14
[INFO] [stderr]   Downloaded futures-io-preview v0.3.0-alpha.14
[INFO] [stderr]   Downloaded futures-sink-preview v0.3.0-alpha.14
[INFO] [stderr]   Downloaded futures-preview v0.3.0-alpha.14
[INFO] [stderr]   Downloaded proc-macro-hack v0.5.5
[INFO] [stderr]   Downloaded futures-select-macro-preview v0.3.0-alpha.14
[INFO] [stderr]   Downloaded futures-core-preview v0.3.0-alpha.14
[INFO] [stderr]   Downloaded syn v0.15.32
[INFO] [stderr]   Downloaded futures-util-preview v0.3.0-alpha.14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ce758ea05ac7df9fd436e79d5a0186506bcf0b557de473f4e1237df71c48c241
[INFO] running `Command { std: "docker" "start" "-a" "ce758ea05ac7df9fd436e79d5a0186506bcf0b557de473f4e1237df71c48c241", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce758ea05ac7df9fd436e79d5a0186506bcf0b557de473f4e1237df71c48c241", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce758ea05ac7df9fd436e79d5a0186506bcf0b557de473f4e1237df71c48c241", kill_on_drop: false }`
[INFO] [stdout] ce758ea05ac7df9fd436e79d5a0186506bcf0b557de473f4e1237df71c48c241
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "RUSTDOCFLAGS=--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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f0e1f99d2a45a659f9b78581b0219ad8b5535431a3a8058b7d4a7f9adaef2ba
[INFO] running `Command { std: "docker" "start" "-a" "9f0e1f99d2a45a659f9b78581b0219ad8b5535431a3a8058b7d4a7f9adaef2ba", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]    Compiling rand_core v0.4.0
[INFO] [stderr]    Compiling libc v0.2.51
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.32
[INFO] [stderr]    Compiling either v1.5.2
[INFO] [stderr]    Compiling proc-macro-nested v0.1.3
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling pin-utils v0.1.0-alpha.4
[INFO] [stderr]    Compiling futures-core-preview v0.3.0-alpha.14
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.3
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/futures-core-preview-0.3.0-alpha.14/src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(futures_api)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[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 `futures-core-preview` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "9f0e1f99d2a45a659f9b78581b0219ad8b5535431a3a8058b7d4a7f9adaef2ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f0e1f99d2a45a659f9b78581b0219ad8b5535431a3a8058b7d4a7f9adaef2ba", kill_on_drop: false }`
[INFO] [stdout] 9f0e1f99d2a45a659f9b78581b0219ad8b5535431a3a8058b7d4a7f9adaef2ba
