[INFO] fetching crate flowr 0.142.0...
[INFO] documenting flowr-0.142.0 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate flowr 0.142.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate flowr 0.142.0 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flowr 0.142.0
[INFO] finished tweaking crates.io crate flowr 0.142.0
[INFO] tweaked toml for crates.io crate flowr 0.142.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate flowr 0.142.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6a7ff7272f803e2185350af06b0eca59b967a04cb0eafc645cfb7582cf6371a2
[INFO] running `Command { std: "docker" "start" "-a" "6a7ff7272f803e2185350af06b0eca59b967a04cb0eafc645cfb7582cf6371a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a7ff7272f803e2185350af06b0eca59b967a04cb0eafc645cfb7582cf6371a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a7ff7272f803e2185350af06b0eca59b967a04cb0eafc645cfb7582cf6371a2", kill_on_drop: false }`
[INFO] [stdout] 6a7ff7272f803e2185350af06b0eca59b967a04cb0eafc645cfb7582cf6371a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 50807fdbfc7425426e6be7cf68dc4d274ff4575fc0a995adb078bcb658a9fc28
[INFO] running `Command { std: "docker" "start" "-a" "50807fdbfc7425426e6be7cf68dc4d274ff4575fc0a995adb078bcb658a9fc28", kill_on_drop: false }`
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[INFO] [stderr]    Compiling flowmacro v0.142.0
[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-6f17d22bba15001f/flowmacro-0.142.0/src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(proc_macro_span)]
[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 `flowmacro` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "50807fdbfc7425426e6be7cf68dc4d274ff4575fc0a995adb078bcb658a9fc28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50807fdbfc7425426e6be7cf68dc4d274ff4575fc0a995adb078bcb658a9fc28", kill_on_drop: false }`
[INFO] [stdout] 50807fdbfc7425426e6be7cf68dc4d274ff4575fc0a995adb078bcb658a9fc28
[INFO] documenting flowr-0.142.0 against beta-2023-12-22 for beta-1.76-rustdoc-1
[INFO] extracting crate flowr 0.142.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate flowr 0.142.0 on toolchain beta-2023-12-22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flowr 0.142.0
[INFO] finished tweaking crates.io crate flowr 0.142.0
[INFO] tweaked toml for crates.io crate flowr 0.142.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate crates.io crate flowr 0.142.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 70b34ec814c0b2680c6613d53a365d8d439a3f9a0572cbc1b48c3a6e45b34c0d
[INFO] running `Command { std: "docker" "start" "-a" "70b34ec814c0b2680c6613d53a365d8d439a3f9a0572cbc1b48c3a6e45b34c0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "70b34ec814c0b2680c6613d53a365d8d439a3f9a0572cbc1b48c3a6e45b34c0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70b34ec814c0b2680c6613d53a365d8d439a3f9a0572cbc1b48c3a6e45b34c0d", kill_on_drop: false }`
[INFO] [stdout] 70b34ec814c0b2680c6613d53a365d8d439a3f9a0572cbc1b48c3a6e45b34c0d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 37a386257bd407291e1335d9896ace1ed904834a5d9869f30c76acc4940f7fd4
[INFO] running `Command { std: "docker" "start" "-a" "37a386257bd407291e1335d9896ace1ed904834a5d9869f30c76acc4940f7fd4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.67
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]    Compiling serde v1.0.188
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]     Checking smallvec v1.11.0
[INFO] [stderr]    Compiling libm v0.2.7
[INFO] [stderr]    Compiling thiserror v1.0.47
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]     Checking memchr v2.6.2
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[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]     Checking allocator-api2 v0.2.16
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling jobserver v0.1.26
[INFO] [stderr]    Compiling crc32fast v1.3.2
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[INFO] [stderr]    Compiling syn v2.0.37
[INFO] [stderr]    Compiling cc v1.0.83
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[INFO] [stderr]     Checking arrayvec v0.7.4
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[INFO] [stderr]    Compiling siphasher v0.3.11
[INFO] [stderr]    Compiling rand_core v0.6.4
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[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling phf_shared v0.11.2
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[INFO] [stderr]    Compiling slotmap v1.0.6
[INFO] [stderr]    Compiling lock_api v0.4.10
[INFO] [stderr]     Checking bitflags v2.4.0
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[INFO] [stderr]    Compiling phf_generator v0.11.2
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[INFO] [stderr]    Compiling xml-rs v0.8.16
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[INFO] [stderr]    Compiling wayland-scanner v0.29.5
[INFO] [stderr]    Compiling libz-sys v1.1.12
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[INFO] [stderr]    Compiling flowmacro v0.142.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/flowmacro-0.142.0/src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(proc_macro_span)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 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 `flowmacro` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "37a386257bd407291e1335d9896ace1ed904834a5d9869f30c76acc4940f7fd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37a386257bd407291e1335d9896ace1ed904834a5d9869f30c76acc4940f7fd4", kill_on_drop: false }`
[INFO] [stdout] 37a386257bd407291e1335d9896ace1ed904834a5d9869f30c76acc4940f7fd4
