[INFO] fetching crate md_htm 0.1.0...
[INFO] testing md_htm-0.1.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate md_htm 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate md_htm 0.1.0
[INFO] finished tweaking crates.io crate md_htm 0.1.0
[INFO] tweaked toml for crates.io crate md_htm 0.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate md_htm 0.1.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "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" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 85 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pastey v0.1.1
[INFO] [stderr]   Downloaded rany v0.1.13
[INFO] [stderr]   Downloaded unicode-id v0.3.6
[INFO] [stderr]   Downloaded daachorse v1.0.0
[INFO] [stderr]   Downloaded matchgen v0.3.1
[INFO] [stderr]   Downloaded htmlize v1.0.6
[INFO] [stderr]   Downloaded markdown v1.0.0
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 59eb3d20dc9eace5ec69d58e68f2a40967e8d8a1d3bed38a9615e79be03eaccb
[INFO] running `Command { std: "docker" "start" "-a" "59eb3d20dc9eace5ec69d58e68f2a40967e8d8a1d3bed38a9615e79be03eaccb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "59eb3d20dc9eace5ec69d58e68f2a40967e8d8a1d3bed38a9615e79be03eaccb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59eb3d20dc9eace5ec69d58e68f2a40967e8d8a1d3bed38a9615e79be03eaccb", kill_on_drop: false }`
[INFO] [stdout] 59eb3d20dc9eace5ec69d58e68f2a40967e8d8a1d3bed38a9615e79be03eaccb
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e1bc58397383ba59fdbfa5deae239a27bf112bc97a68bdd4f82f28d4511cece6
[INFO] running `Command { std: "docker" "start" "-a" "e1bc58397383ba59fdbfa5deae239a27bf112bc97a68bdd4f82f28d4511cece6", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling itoa v1.0.15
[INFO] [stderr]    Compiling ryu v1.0.20
[INFO] [stderr]    Compiling matchgen v0.3.1
[INFO] [stderr]    Compiling unicode-id v0.3.6
[INFO] [stderr]    Compiling static_init_macro v1.0.4
[INFO] [stderr]    Compiling libc v0.2.176
[INFO] [stderr]    Compiling static_init v1.0.4
[INFO] [stderr]    Compiling pastey v0.1.1
[INFO] [stderr]    Compiling daachorse v1.0.0
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling markdown v1.0.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling rany v0.1.13
[INFO] [stderr]    Compiling htmlize v1.0.6
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rany-0.1.13/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(doc_cfg)]
[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 `rany` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "e1bc58397383ba59fdbfa5deae239a27bf112bc97a68bdd4f82f28d4511cece6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1bc58397383ba59fdbfa5deae239a27bf112bc97a68bdd4f82f28d4511cece6", kill_on_drop: false }`
[INFO] [stdout] e1bc58397383ba59fdbfa5deae239a27bf112bc97a68bdd4f82f28d4511cece6