[INFO] cloning repository https://github.com/Lucerna-Lang/Lucerna
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Lucerna-Lang/Lucerna" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLucerna-Lang%2FLucerna", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLucerna-Lang%2FLucerna'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3de22b6c66bb4eaffd97226606d855da2295b6a7
[INFO] checking Lucerna-Lang/Lucerna against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLucerna-Lang%2FLucerna" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Lucerna-Lang/Lucerna
[INFO] finished tweaking git repo https://github.com/Lucerna-Lang/Lucerna
[INFO] tweaked toml for git repo https://github.com/Lucerna-Lang/Lucerna written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Lucerna-Lang/Lucerna on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "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" "+1.95.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 167 packages to latest compatible versions
[INFO] [stderr]       Adding reqwest v0.11.27 (available: v0.13.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0ec56fe91dc6846fe916d5451d14e369d527c5cc243d3450ce908070b10e7d69
[INFO] running `Command { std: "docker" "start" "-a" "0ec56fe91dc6846fe916d5451d14e369d527c5cc243d3450ce908070b10e7d69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ec56fe91dc6846fe916d5451d14e369d527c5cc243d3450ce908070b10e7d69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ec56fe91dc6846fe916d5451d14e369d527c5cc243d3450ce908070b10e7d69", kill_on_drop: false }`
[INFO] [stdout] 0ec56fe91dc6846fe916d5451d14e369d527c5cc243d3450ce908070b10e7d69
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0279f5ffefba6499e71e6bdaa68f071efacf815a4db58a028e76b7917aef880a
[INFO] running `Command { std: "docker" "start" "-a" "0279f5ffefba6499e71e6bdaa68f071efacf815a4db58a028e76b7917aef880a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]    Compiling cc v1.2.62
[INFO] [stderr]    Compiling pkg-config v0.3.33
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]     Checking once_cell v1.21.4
[INFO] [stderr]    Compiling openssl v0.10.79
[INFO] [stderr]     Checking http v0.2.12
[INFO] [stderr]     Checking bitflags v2.11.1
[INFO] [stderr]     Checking hashbrown v0.17.0
[INFO] [stderr]     Checking tracing-core v0.1.36
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]     Checking futures-util v0.3.32
[INFO] [stderr]     Checking futures-channel v0.3.32
[INFO] [stderr]     Checking tracing v0.1.44
[INFO] [stderr]     Checking http-body v0.4.6
[INFO] [stderr]     Checking indexmap v2.14.0
[INFO] [stderr]     Checking structures v5.0.1 (/opt/rustwide/workdir/Structures)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> Structures/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(allocator_api)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `found` is never read
[INFO] [stdout]   --> Structures/src/tokenizer.rs:75:21
[INFO] [stdout]    |
[INFO] [stdout] 75 |     let mut found = None;
[INFO] [stdout]    |                     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `structures` (lib) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "0279f5ffefba6499e71e6bdaa68f071efacf815a4db58a028e76b7917aef880a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0279f5ffefba6499e71e6bdaa68f071efacf815a4db58a028e76b7917aef880a", kill_on_drop: false }`
[INFO] [stdout] 0279f5ffefba6499e71e6bdaa68f071efacf815a4db58a028e76b7917aef880a
