[INFO] fetching crate b3-rs 0.1.0...
[INFO] testing b3-rs-0.1.0 against 1.69.0 for beta-1.70-1
[INFO] extracting crate b3-rs 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate b3-rs 0.1.0 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate b3-rs 0.1.0
[INFO] finished tweaking crates.io crate b3-rs 0.1.0
[INFO] tweaked toml for crates.io crate b3-rs 0.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+1.69.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nano-leb128 v0.1.0
[INFO] [stderr]   Downloaded byteio v0.2.3
[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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2b8a99dc299db45338a4f471ce3db8d8bde33dd7aa2e2518708d07def346679c
[INFO] running `Command { std: "docker" "start" "-a" "2b8a99dc299db45338a4f471ce3db8d8bde33dd7aa2e2518708d07def346679c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2b8a99dc299db45338a4f471ce3db8d8bde33dd7aa2e2518708d07def346679c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b8a99dc299db45338a4f471ce3db8d8bde33dd7aa2e2518708d07def346679c", kill_on_drop: false }`
[INFO] [stdout] 2b8a99dc299db45338a4f471ce3db8d8bde33dd7aa2e2518708d07def346679c
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d534a9ba17f5b26849fecb33d2e144fbcf3ed3646acb1182c1f60a2487550ac9
[INFO] running `Command { std: "docker" "start" "-a" "d534a9ba17f5b26849fecb33d2e144fbcf3ed3646acb1182c1f60a2487550ac9", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteio v0.2.3
[INFO] [stderr]    Compiling nano-leb128 v0.1.0
[INFO] [stderr]    Compiling b3-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 51 | #![feature(alloc_prelude)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `alloc_prelude`
[INFO] [stdout]   --> src/lib.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 51 | #![feature(alloc_prelude)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `b3-rs` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "d534a9ba17f5b26849fecb33d2e144fbcf3ed3646acb1182c1f60a2487550ac9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d534a9ba17f5b26849fecb33d2e144fbcf3ed3646acb1182c1f60a2487550ac9", kill_on_drop: false }`
[INFO] [stdout] d534a9ba17f5b26849fecb33d2e144fbcf3ed3646acb1182c1f60a2487550ac9
