[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] checking LooMaclin/concat_const_example/bdc5902bdcf36109bf683566f15bfa0021882f43 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLooMaclin%2Fconcat_const_example" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LooMaclin/concat_const_example on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "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-7-tc1/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "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-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 63422c19586979ccfee672af658b532f1091db05284d19fae80a3dde926b41bd
[INFO] running `Command { std: "docker" "start" "-a" "63422c19586979ccfee672af658b532f1091db05284d19fae80a3dde926b41bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "63422c19586979ccfee672af658b532f1091db05284d19fae80a3dde926b41bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63422c19586979ccfee672af658b532f1091db05284d19fae80a3dde926b41bd", kill_on_drop: false }`
[INFO] [stdout] 63422c19586979ccfee672af658b532f1091db05284d19fae80a3dde926b41bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 51702b579d1aa9ef69d62457804f07db331e9fc5f5527dfa2b7ebf9217821179
[INFO] running `Command { std: "docker" "start" "-a" "51702b579d1aa9ef69d62457804f07db331e9fc5f5527dfa2b7ebf9217821179", kill_on_drop: false }`
[INFO] [stderr]     Checking 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[E0557]: feature has been removed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/const-concat-07bb967c112852f5/7fbd831/src/lib.rs:24:73
[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: unions with `Copy` and `ManuallyDrop` fields are stable; there is no intent to stabilize more
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `const_str_as_bytes`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/const-concat-07bb967c112852f5/7fbd831/src/lib.rs:24:38
[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]: field must implement `Copy` or be wrapped in `ManuallyDrop<...>` to be used in a union
[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: union fields must not have drop side-effects, which is currently enforced via either `Copy` or `ManuallyDrop<...>`
[INFO] [stdout] help: wrap the field type in `ManuallyDrop<...>`
[INFO] [stdout]    |
[INFO] [stdout] 29 |         from: std::mem::ManuallyDrop<From>,
[INFO] [stdout]    |               +++++++++++++++++++++++    +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0557, E0635, E0740.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `const-concat` (lib) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "51702b579d1aa9ef69d62457804f07db331e9fc5f5527dfa2b7ebf9217821179", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51702b579d1aa9ef69d62457804f07db331e9fc5f5527dfa2b7ebf9217821179", kill_on_drop: false }`
[INFO] [stdout] 51702b579d1aa9ef69d62457804f07db331e9fc5f5527dfa2b7ebf9217821179