[INFO] cloning repository https://github.com/LooMaclin/concat_const_example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LooMaclin/concat_const_example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLooMaclin%2Fconcat_const_example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLooMaclin%2Fconcat_const_example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bdc5902bdcf36109bf683566f15bfa0021882f43
[INFO] testing LooMaclin/concat_const_example 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%2FLooMaclin%2Fconcat_const_example" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LooMaclin/concat_const_example 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/LooMaclin/concat_const_example
[INFO] finished tweaking git repo https://github.com/LooMaclin/concat_const_example
[INFO] tweaked toml for git repo https://github.com/LooMaclin/concat_const_example written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/LooMaclin/concat_const_example 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/Candunc/const-concat`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 30e23ed2d8c1f81000b43006d3bed89b3c69894e9907c7759b1caa1b69976fb6
[INFO] running `Command { std: "docker" "start" "-a" "30e23ed2d8c1f81000b43006d3bed89b3c69894e9907c7759b1caa1b69976fb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30e23ed2d8c1f81000b43006d3bed89b3c69894e9907c7759b1caa1b69976fb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30e23ed2d8c1f81000b43006d3bed89b3c69894e9907c7759b1caa1b69976fb6", kill_on_drop: false }`
[INFO] [stdout] 30e23ed2d8c1f81000b43006d3bed89b3c69894e9907c7759b1caa1b69976fb6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 782480e90452f03d0d4a2cc0527f2289afc8a895804248cd7eeadd4e47bcc3bb
[INFO] running `Command { std: "docker" "start" "-a" "782480e90452f03d0d4a2cc0527f2289afc8a895804248cd7eeadd4e47bcc3bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling const-concat v0.1.1 (https://github.com/Candunc/const-concat?branch=patch-1#7fbd831e)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/const-concat-07bb967c112852f5/7fbd831/src/lib.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 | #![feature(const_fn, const_fn_union, const_str_as_bytes, const_str_len, untagged_unions)]
[INFO] [stdout]    |            ^^^^^^^^ feature has been removed
[INFO] [stdout]    |
[INFO] [stdout]    = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/const-concat-07bb967c112852f5/7fbd831/src/lib.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | #![feature(const_fn, const_fn_union, const_str_as_bytes, const_str_len, untagged_unions)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0740]: unions may not contain fields that need dropping
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/const-concat-07bb967c112852f5/7fbd831/src/lib.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         from: From,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `std::mem::ManuallyDrop` can be used to wrap the type
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/const-concat-07bb967c112852f5/7fbd831/src/lib.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         from: From,
[INFO] [stdout]    |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0557, E0740.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `const-concat` due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "782480e90452f03d0d4a2cc0527f2289afc8a895804248cd7eeadd4e47bcc3bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "782480e90452f03d0d4a2cc0527f2289afc8a895804248cd7eeadd4e47bcc3bb", kill_on_drop: false }`
[INFO] [stdout] 782480e90452f03d0d4a2cc0527f2289afc8a895804248cd7eeadd4e47bcc3bb
