[INFO] fetching crate huffman-codec 0.1.6...
[INFO] testing huffman-codec-0.1.6 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate huffman-codec 0.1.6 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate huffman-codec 0.1.6
[INFO] finished tweaking crates.io crate huffman-codec 0.1.6
[INFO] tweaked toml for crates.io crate huffman-codec 0.1.6 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate huffman-codec 0.1.6 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eba6ed963aa3d4ef2a5711f59fc45b6d14a5b25d62041524ff98ebcb86ab83a0
[INFO] running `Command { std: "docker" "start" "-a" "eba6ed963aa3d4ef2a5711f59fc45b6d14a5b25d62041524ff98ebcb86ab83a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eba6ed963aa3d4ef2a5711f59fc45b6d14a5b25d62041524ff98ebcb86ab83a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eba6ed963aa3d4ef2a5711f59fc45b6d14a5b25d62041524ff98ebcb86ab83a0", kill_on_drop: false }`
[INFO] [stdout] eba6ed963aa3d4ef2a5711f59fc45b6d14a5b25d62041524ff98ebcb86ab83a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3d1e93e4b392e601ea3aaa9b090b85a0ca0229b2ef737448cc4e02366a8a5853
[INFO] running `Command { std: "docker" "start" "-a" "3d1e93e4b392e601ea3aaa9b090b85a0ca0229b2ef737448cc4e02366a8a5853", kill_on_drop: false }`
[INFO] [stderr]    Compiling huffman-codec v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(const_in_array_repeat_expressions)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in 1.51.0; see <https://github.com/rust-lang/rust/pull/80404> for more information
[INFO] [stdout]   = note: removed due to causing promotable bugs
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `huffman-codec` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "3d1e93e4b392e601ea3aaa9b090b85a0ca0229b2ef737448cc4e02366a8a5853", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d1e93e4b392e601ea3aaa9b090b85a0ca0229b2ef737448cc4e02366a8a5853", kill_on_drop: false }`
[INFO] [stdout] 3d1e93e4b392e601ea3aaa9b090b85a0ca0229b2ef737448cc4e02366a8a5853