[INFO] fetching crate ctrlgen 0.3.5...
[INFO] testing ctrlgen-0.3.5 against 1.90.0 for beta-1.91-3
[INFO] extracting crate ctrlgen 0.3.5 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate ctrlgen 0.3.5
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate ctrlgen 0.3.5
[INFO] tweaked toml for crates.io crate ctrlgen 0.3.5 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ctrlgen 0.3.5 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]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 71 packages to latest compatible versions
[INFO] [stderr]       Adding flume v0.10.14 (available: v0.11.1)
[INFO] [stderr]       Adding futures-lite v1.13.0 (available: v2.6.1)
[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ctrlgen-derive v0.3.5
[INFO] [stderr]   Downloaded ctrlgen-impl v0.3.5
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ac4de9864a8dbe644ae392fd8dad96bfb4b338dfa276e373b0c615b4079cc757
[INFO] running `Command { std: "docker" "start" "-a" "ac4de9864a8dbe644ae392fd8dad96bfb4b338dfa276e373b0c615b4079cc757", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ac4de9864a8dbe644ae392fd8dad96bfb4b338dfa276e373b0c615b4079cc757", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac4de9864a8dbe644ae392fd8dad96bfb4b338dfa276e373b0c615b4079cc757", kill_on_drop: false }`
[INFO] [stdout] ac4de9864a8dbe644ae392fd8dad96bfb4b338dfa276e373b0c615b4079cc757
[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=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] f5c1ab3245c1dcca1e93680e5d2a60f119e88844a1e7ac5b3652ecdf45db0219
[INFO] running `Command { std: "docker" "start" "-a" "f5c1ab3245c1dcca1e93680e5d2a60f119e88844a1e7ac5b3652ecdf45db0219", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling convert_case v0.5.0
[INFO] [stderr]    Compiling ctrlgen-impl v0.3.5
[INFO] [stderr]    Compiling ctrlgen-derive v0.3.5
[INFO] [stderr]    Compiling ctrlgen v0.3.5 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(impl_trait_in_assoc_type)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(try_trait_v2)]
[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 `ctrlgen` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "f5c1ab3245c1dcca1e93680e5d2a60f119e88844a1e7ac5b3652ecdf45db0219", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5c1ab3245c1dcca1e93680e5d2a60f119e88844a1e7ac5b3652ecdf45db0219", kill_on_drop: false }`
[INFO] [stdout] f5c1ab3245c1dcca1e93680e5d2a60f119e88844a1e7ac5b3652ecdf45db0219
