[INFO] fetching crate ram_chomper 2.0.0...
[INFO] testing ram_chomper-2.0.0 against 1.99.0-beta.8 for beta-1.100-2
[INFO] extracting crate ram_chomper 2.0.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate ram_chomper 2.0.0
[INFO] finished tweaking crates.io crate ram_chomper 2.0.0
[INFO] tweaked toml for crates.io crate ram_chomper 2.0.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ram_chomper 2.0.0 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ram_chomper 2.0.0 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" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded system-memory v0.1.7
[INFO] [stderr]   Downloaded memory-stats v1.2.0
[INFO] [stderr]   Downloaded fastrand v2.4.1
[INFO] [stderr]   Downloaded crossterm_winapi v0.1.5
[INFO] [stderr]   Downloaded crossterm_style v0.2.0
[INFO] [stderr]   Downloaded crossterm_input v0.2.1
[INFO] [stderr]   Downloaded digit_group v0.1.0
[INFO] [stderr]   Downloaded crossterm_cursor v0.1.0
[INFO] [stderr]   Downloaded crossterm_utils v0.1.0
[INFO] [stderr]   Downloaded crossterm_screen v0.1.0
[INFO] [stderr]   Downloaded crossterm_terminal v0.1.0
[INFO] [stderr]   Downloaded crossterm v0.8.2
[INFO] [stderr]   Downloaded termios v0.3.3
[INFO] [stderr]   Downloaded clap_derive v4.6.1
[INFO] [stderr]   Downloaded clap v4.6.1
[INFO] [stderr]   Downloaded dont_disappear v3.0.1
[INFO] [stderr]   Downloaded clap_builder v4.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3111399a4047eeb3a02b7a90e478d715f38a8c6669b5c4b49d30a17385265909" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] fd17b23c7b0f4f1adaecee9de4d676246ec30084ee668b1f3b707c3ff4b15b38
[INFO] running `Command { std: "docker" "start" "fd17b23c7b0f4f1adaecee9de4d676246ec30084ee668b1f3b707c3ff4b15b38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd17b23c7b0f4f1adaecee9de4d676246ec30084ee668b1f3b707c3ff4b15b38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "fd17b23c7b0f4f1adaecee9de4d676246ec30084ee668b1f3b707c3ff4b15b38" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd17b23c7b0f4f1adaecee9de4d676246ec30084ee668b1f3b707c3ff4b15b38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "fd17b23c7b0f4f1adaecee9de4d676246ec30084ee668b1f3b707c3ff4b15b38" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling quote v1.0.46
[INFO] [stderr]    Compiling unicode-ident v1.0.24
[INFO] [stderr]    Compiling semver v1.0.28
[INFO] [stderr]    Compiling utf8parse v0.2.2
[INFO] [stderr]    Compiling anstyle v1.0.14
[INFO] [stderr]    Compiling is_terminal_polyfill v1.70.2
[INFO] [stderr]    Compiling colorchoice v1.0.5
[INFO] [stderr]    Compiling anstyle-parse v1.0.0
[INFO] [stderr]    Compiling anstyle-query v1.1.5
[INFO] [stderr]    Compiling strsim v0.11.1
[INFO] [stderr]    Compiling clap_lex v1.1.0
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]    Compiling anstream v1.0.0
[INFO] [stderr]    Compiling digit_group v0.1.0
[INFO] [stderr]    Compiling fastrand v2.4.1
[INFO] [stderr]    Compiling system-memory v0.1.7
[INFO] [stderr]    Compiling clap_builder v4.6.0
[INFO] [stderr]    Compiling syn v2.0.118
[INFO] [stderr]    Compiling termios v0.3.3
[INFO] [stderr]    Compiling errno v0.3.14
[INFO] [stderr]    Compiling memory-stats v1.2.0
[INFO] [stderr]    Compiling crossterm_utils v0.1.0
[INFO] [stderr]    Compiling crossterm_cursor v0.1.0
[INFO] [stderr]    Compiling crossterm_screen v0.1.0
[INFO] [stderr]    Compiling crossterm_style v0.2.0
[INFO] [stderr]    Compiling crossterm_terminal v0.1.0
[INFO] [stderr]    Compiling crossterm_input v0.2.1
[INFO] [stderr]    Compiling crossterm v0.8.2
[INFO] [stderr]    Compiling dont_disappear v3.0.1
[INFO] [stderr]    Compiling clap_derive v4.6.1
[INFO] [stderr]    Compiling clap v4.6.1
[INFO] [stderr]    Compiling ram_chomper v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(allocator_api)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ram_chomper` (bin "ram_chomper") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "fd17b23c7b0f4f1adaecee9de4d676246ec30084ee668b1f3b707c3ff4b15b38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd17b23c7b0f4f1adaecee9de4d676246ec30084ee668b1f3b707c3ff4b15b38", kill_on_drop: false }`
[INFO] [stdout] fd17b23c7b0f4f1adaecee9de4d676246ec30084ee668b1f3b707c3ff4b15b38
