[INFO] fetching crate flipper0-fap-build 0.1.8...
[INFO] documenting flipper0-fap-build-0.1.8 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate flipper0-fap-build 0.1.8 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate flipper0-fap-build 0.1.8 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 flipper0-fap-build 0.1.8
[INFO] finished tweaking crates.io crate flipper0-fap-build 0.1.8
[INFO] tweaked toml for crates.io crate flipper0-fap-build 0.1.8 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 flipper0-build-cfg v0.1.3
[INFO] [stderr]   Downloaded crate-metadata v0.1.1
[INFO] [stderr]   Downloaded fam v0.1.5
[INFO] [stderr]   Downloaded flipper0-fam-build v0.1.6
[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@sha256:97d61d7686bf65f8ecb15491ab51835e82dc9176a96a831f143a431b191fc501" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f4d113be44a7cc7e9ed46f534dad1bc71d3f597feba5362996034fb217794f37
[INFO] running `Command { std: "docker" "start" "-a" "f4d113be44a7cc7e9ed46f534dad1bc71d3f597feba5362996034fb217794f37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4d113be44a7cc7e9ed46f534dad1bc71d3f597feba5362996034fb217794f37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4d113be44a7cc7e9ed46f534dad1bc71d3f597feba5362996034fb217794f37", kill_on_drop: false }`
[INFO] [stdout] f4d113be44a7cc7e9ed46f534dad1bc71d3f597feba5362996034fb217794f37
[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@sha256:97d61d7686bf65f8ecb15491ab51835e82dc9176a96a831f143a431b191fc501" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c5117dca788c6f797e82100a77517f765306e86d078126d194cbadb3399e7802
[INFO] running `Command { std: "docker" "start" "-a" "c5117dca788c6f797e82100a77517f765306e86d078126d194cbadb3399e7802", kill_on_drop: false }`
[INFO] [stderr]    Compiling ucd-trie v0.1.5
[INFO] [stderr]     Checking flipper0-build-cfg v0.1.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.40
[INFO] [stderr]     Checking serde_json v1.0.96
[INFO] [stderr]     Checking crate-metadata v0.1.1
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]    Compiling pest v2.6.0
[INFO] [stderr]    Compiling pest_meta v2.6.0
[INFO] [stderr]    Compiling pest_generator v2.6.0
[INFO] [stderr]    Compiling pest_derive v2.6.0
[INFO] [stderr]     Checking handlebars v4.3.6
[INFO] [stderr]     Checking fam v0.1.5
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/fam-0.1.5/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_syntax)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fam` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "c5117dca788c6f797e82100a77517f765306e86d078126d194cbadb3399e7802", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5117dca788c6f797e82100a77517f765306e86d078126d194cbadb3399e7802", kill_on_drop: false }`
[INFO] [stdout] c5117dca788c6f797e82100a77517f765306e86d078126d194cbadb3399e7802
