[INFO] fetching crate const-concat 0.1.0... [INFO] testing const-concat-0.1.0 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1 [INFO] extracting crate const-concat 0.1.0 into /workspace/builds/worker-7-tc2/source [INFO] started tweaking crates.io crate const-concat 0.1.0 [INFO] finished tweaking crates.io crate const-concat 0.1.0 [INFO] tweaked toml for crates.io crate const-concat 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate const-concat 0.1.0 on toolchain b83b707f97d809763b7861afa7638871f3339a33 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] f3239c4d0de4ec5720ce1b1dc1a4aec66f6b3318920d22cd81aae50b6f8e76a1 [INFO] running `Command { std: "docker" "start" "-a" "f3239c4d0de4ec5720ce1b1dc1a4aec66f6b3318920d22cd81aae50b6f8e76a1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f3239c4d0de4ec5720ce1b1dc1a4aec66f6b3318920d22cd81aae50b6f8e76a1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f3239c4d0de4ec5720ce1b1dc1a4aec66f6b3318920d22cd81aae50b6f8e76a1", kill_on_drop: false }` [INFO] [stdout] f3239c4d0de4ec5720ce1b1dc1a4aec66f6b3318920d22cd81aae50b6f8e76a1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a5227a99b11f370a98c694b137e0515e882ada5c956e86bd3a7d68d925bb9a1d [INFO] running `Command { std: "docker" "start" "-a" "a5227a99b11f370a98c694b137e0515e882ada5c956e86bd3a7d68d925bb9a1d", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024 [INFO] [stderr] Compiling const-concat v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0557]: feature has been removed [INFO] [stdout] --> src/lib.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(const_fn, const_str_as_bytes, const_str_len, const_let, untagged_unions)] [INFO] [stdout] | ^^^^^^^^ feature has been removed [INFO] [stdout] | [INFO] [stdout] = note: removed in 1.54.0; see for more information [INFO] [stdout] = note: split into finer-grained feature gates [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0557]: feature has been removed [INFO] [stdout] --> src/lib.rs:1:68 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(const_fn, const_str_as_bytes, const_str_len, const_let, untagged_unions)] [INFO] [stdout] | ^^^^^^^^^^^^^^^ feature has been removed [INFO] [stdout] | [INFO] [stdout] = note: removed in 1.64.0; see for more information [INFO] [stdout] = note: unions with `Copy` and `ManuallyDrop` fields are stable; there is no intent to stabilize more [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unknown lint: `unions_with_drop_fields` [INFO] [stdout] --> src/lib.rs:3:9 [INFO] [stdout] | [INFO] [stdout] 3 | #[allow(unions_with_drop_fields)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unknown_lints)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `const_let` has been stable since 1.33.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:1:57 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(const_fn, const_str_as_bytes, const_str_len, const_let, untagged_unions)] [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `const_str_len` has been stable since 1.39.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:1:42 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(const_fn, const_str_as_bytes, const_str_len, const_let, untagged_unions)] [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0635]: unknown feature `const_str_as_bytes` [INFO] [stdout] --> src/lib.rs:1:22 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(const_fn, const_str_as_bytes, const_str_len, const_let, 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] --> src/lib.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 6 | 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] 6 | from: std::mem::ManuallyDrop, [INFO] [stdout] | +++++++++++++++++++++++ + [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 4 previous errors; 3 warnings emitted [INFO] running `Command { std: "docker" "inspect" "a5227a99b11f370a98c694b137e0515e882ada5c956e86bd3a7d68d925bb9a1d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a5227a99b11f370a98c694b137e0515e882ada5c956e86bd3a7d68d925bb9a1d", kill_on_drop: false }` [INFO] [stdout] a5227a99b11f370a98c694b137e0515e882ada5c956e86bd3a7d68d925bb9a1d