[INFO] cloning repository https://github.com/Nitheesh1609/Hello_world
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Nitheesh1609/Hello_world" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNitheesh1609%2FHello_world", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNitheesh1609%2FHello_world'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d18898c04901ec5c063941ab3b67169f9fdbf620
[INFO] testing Nitheesh1609/Hello_world against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNitheesh1609%2FHello_world" "/workspace/builds/worker-109/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-109/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Nitheesh1609/Hello_world on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Nitheesh1609/Hello_world
[INFO] finished tweaking git repo https://github.com/Nitheesh1609/Hello_world
[INFO] tweaked toml for git repo https://github.com/Nitheesh1609/Hello_world written to /workspace/builds/worker-109/source/Cargo.toml
[INFO] crate git repo https://github.com/Nitheesh1609/Hello_world already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aceaab94e4c8a17428d1c8645c746bf45ccdac01c66255f38edc33812d736661
[INFO] running `Command { std: "docker" "start" "-a" "aceaab94e4c8a17428d1c8645c746bf45ccdac01c66255f38edc33812d736661", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aceaab94e4c8a17428d1c8645c746bf45ccdac01c66255f38edc33812d736661", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aceaab94e4c8a17428d1c8645c746bf45ccdac01c66255f38edc33812d736661", kill_on_drop: false }`
[INFO] [stdout] aceaab94e4c8a17428d1c8645c746bf45ccdac01c66255f38edc33812d736661
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 05a3c8713bf46c7952a8f90f69450b6093f9e21f075eb12154d15dfd36ca6714
[INFO] running `Command { std: "docker" "start" "-a" "05a3c8713bf46c7952a8f90f69450b6093f9e21f075eb12154d15dfd36ca6714", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling Hello_world v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(lang_items)]
[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 `Hello_world` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "05a3c8713bf46c7952a8f90f69450b6093f9e21f075eb12154d15dfd36ca6714", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05a3c8713bf46c7952a8f90f69450b6093f9e21f075eb12154d15dfd36ca6714", kill_on_drop: false }`
[INFO] [stdout] 05a3c8713bf46c7952a8f90f69450b6093f9e21f075eb12154d15dfd36ca6714