[INFO] cloning repository https://github.com/FelixMo42/incremental_parser
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FelixMo42/incremental_parser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFelixMo42%2Fincremental_parser", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFelixMo42%2Fincremental_parser'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b01adfb9b366ae3f70b397a44c5fd13311c9d19d
[INFO] testing FelixMo42/incremental_parser 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%2FFelixMo42%2Fincremental_parser" "/workspace/builds/worker-57/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-57/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/FelixMo42/incremental_parser 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] started tweaking git repo https://github.com/FelixMo42/incremental_parser
[INFO] finished tweaking git repo https://github.com/FelixMo42/incremental_parser
[INFO] tweaked toml for git repo https://github.com/FelixMo42/incremental_parser written to /workspace/builds/worker-57/source/Cargo.toml
[INFO] crate git repo https://github.com/FelixMo42/incremental_parser already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/FelixMo42/tblit`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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] 6ae1bba3020b9b35982aeb8fc62f23e8f3b290f3b32598b4a36d084cda47a6eb
[INFO] running `Command { std: "docker" "start" "-a" "6ae1bba3020b9b35982aeb8fc62f23e8f3b290f3b32598b4a36d084cda47a6eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ae1bba3020b9b35982aeb8fc62f23e8f3b290f3b32598b4a36d084cda47a6eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ae1bba3020b9b35982aeb8fc62f23e8f3b290f3b32598b4a36d084cda47a6eb", kill_on_drop: false }`
[INFO] [stdout] 6ae1bba3020b9b35982aeb8fc62f23e8f3b290f3b32598b4a36d084cda47a6eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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] 23346d95eed0538d8bb81ce38c9a4c5d34a3cdc2bb6bc05c44303e9e2b7949a9
[INFO] running `Command { std: "docker" "start" "-a" "23346d95eed0538d8bb81ce38c9a4c5d34a3cdc2bb6bc05c44303e9e2b7949a9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling numtoa v0.1.0
[INFO] [stderr]    Compiling termion v1.5.6
[INFO] [stderr]    Compiling tblit v0.2.0 (https://github.com/FelixMo42/tblit#3c7cb681)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/git/checkouts/tblit-71e8387ca6cbd50c/3c7cb68/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(step_trait, step_trait_ext)]
[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 `tblit` 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" "23346d95eed0538d8bb81ce38c9a4c5d34a3cdc2bb6bc05c44303e9e2b7949a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23346d95eed0538d8bb81ce38c9a4c5d34a3cdc2bb6bc05c44303e9e2b7949a9", kill_on_drop: false }`
[INFO] [stdout] 23346d95eed0538d8bb81ce38c9a4c5d34a3cdc2bb6bc05c44303e9e2b7949a9