[INFO] fetching crate noria-dataflow 0.6.0...
[INFO] testing noria-dataflow-0.6.0 against 1.91.0 for beta-1.92-2
[INFO] extracting crate noria-dataflow 0.6.0 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate noria-dataflow 0.6.0
[INFO] finished tweaking crates.io crate noria-dataflow 0.6.0
[INFO] tweaked toml for crates.io crate noria-dataflow 0.6.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate noria-dataflow 0.6.0 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "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" "+1.91.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 298 packages to latest compatible versions
[INFO] [stderr]       Adding ahash v0.3.8 (available: v0.8.12)
[INFO] [stderr]       Adding bincode v1.3.3 (available: v2.0.1)
[INFO] [stderr]       Adding indexmap v1.9.3 (available: v2.12.0)
[INFO] [stderr]       Adding itertools v0.9.0 (available: v0.14.0)
[INFO] [stderr]       Adding jemallocator v0.3.2 (available: v0.5.4)
[INFO] [stderr]       Adding petgraph v0.5.1 (available: v0.8.3)
[INFO] [stderr]       Adding rand v0.7.3 (available: v0.9.2)
[INFO] [stderr]       Adding rocksdb v0.14.0 (available: v0.24.0)
[INFO] [stderr]       Adding stream-cancel v0.5.2 (available: v0.8.2)
[INFO] [stderr]       Adding tokio v0.2.25 (available: v1.48.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rocksdb v0.14.0
[INFO] [stderr]   Downloaded timekeeper v0.3.2
[INFO] [stderr]   Downloaded noria-common v0.6.0
[INFO] [stderr]   Downloaded stream-cancel v0.5.2
[INFO] [stderr]   Downloaded assert_infrequent v0.1.0
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[INFO] [stderr]   Downloaded noria v0.6.1
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[INFO] [stderr]   Downloaded tower-limit v0.3.1
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] da796dc13eaeaf7db443fd30ad642d4f13393e4fd879f7e1c056b75daf7b06b2
[INFO] running `Command { std: "docker" "start" "-a" "da796dc13eaeaf7db443fd30ad642d4f13393e4fd879f7e1c056b75daf7b06b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "da796dc13eaeaf7db443fd30ad642d4f13393e4fd879f7e1c056b75daf7b06b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da796dc13eaeaf7db443fd30ad642d4f13393e4fd879f7e1c056b75daf7b06b2", kill_on_drop: false }`
[INFO] [stdout] da796dc13eaeaf7db443fd30ad642d4f13393e4fd879f7e1c056b75daf7b06b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 797e63a9d5f21a8756d4ccc51fc5b3f66eb5881bc14afed398a60b4cacee840e
[INFO] running `Command { std: "docker" "start" "-a" "797e63a9d5f21a8756d4ccc51fc5b3f66eb5881bc14afed398a60b4cacee840e", kill_on_drop: false }`
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[INFO] [stderr]    Compiling assert_infrequent v0.1.0
[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/assert_infrequent-0.1.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[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 `assert_infrequent` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "797e63a9d5f21a8756d4ccc51fc5b3f66eb5881bc14afed398a60b4cacee840e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "797e63a9d5f21a8756d4ccc51fc5b3f66eb5881bc14afed398a60b4cacee840e", kill_on_drop: false }`
[INFO] [stdout] 797e63a9d5f21a8756d4ccc51fc5b3f66eb5881bc14afed398a60b4cacee840e