[INFO] fetching crate syndicate 0.44.0-rc.3...
[INFO] checking syndicate-0.44.0-rc.3 against 1.95.0 for pr-155915
[INFO] extracting crate syndicate 0.44.0-rc.3 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate syndicate 0.44.0-rc.3
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate syndicate 0.44.0-rc.3
[INFO] tweaked toml for crates.io crate syndicate 0.44.0-rc.3 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate syndicate 0.44.0-rc.3 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate syndicate 0.44.0-rc.3 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded log v0.4.26
[INFO] [stderr]   Downloaded tracing-serde v0.1.3
[INFO] [stderr]   Downloaded dtoa v0.4.8
[INFO] [stderr]   Downloaded tracing-log v0.1.4
[INFO] [stderr]   Downloaded is-terminal v0.4.16
[INFO] [stderr]   Downloaded heck v0.3.3
[INFO] [stderr]   Downloaded crunchy v0.2.3
[INFO] [stderr]   Downloaded convert_case v0.4.0
[INFO] [stderr]   Downloaded clap_lex v0.7.4
[INFO] [stderr]   Downloaded strsim v0.8.0
[INFO] [stderr]   Downloaded anstyle v1.0.10
[INFO] [stderr]   Downloaded tracing-futures v0.2.5
[INFO] [stderr]   Downloaded android-tzdata v0.1.1
[INFO] [stderr]   Downloaded windows-link v0.1.1
[INFO] [stderr]   Downloaded syndicate-schema-plugin v0.12.0-rc.1
[INFO] [stderr]   Downloaded once_cell v1.21.1
[INFO] [stderr]   Downloaded slab v0.4.9
[INFO] [stderr]   Downloaded structopt-derive v0.4.18
[INFO] [stderr]   Downloaded rustversion v1.0.20
[INFO] [stderr]   Downloaded hermit-abi v0.5.0
[INFO] [stderr]   Downloaded windows-core v0.52.0
[INFO] [stderr]   Downloaded preserves-schema v6.0.0-rc.5
[INFO] [stderr]   Downloaded half v2.5.0
[INFO] [stderr]   Downloaded openssl-sys v0.9.106
[INFO] [stderr]   Downloaded typenum v1.18.0
[INFO] [stderr]   Downloaded bumpalo v3.17.0
[INFO] [stderr]   Downloaded criterion v0.5.1
[INFO] [stderr]   Downloaded cc v1.2.17
[INFO] [stderr]   Downloaded tracing-subscriber v0.2.25
[INFO] [stderr]   Downloaded clap_builder v4.5.32
[INFO] [stderr]   Downloaded preserves v5.0.0-rc.6
[INFO] [stderr]   Downloaded structopt v0.3.26
[INFO] [stderr]   Downloaded clap v2.34.0
[INFO] [stderr]   Downloaded regex v1.11.1
[INFO] [stderr]   Downloaded chrono v0.4.40
[INFO] [stderr]   Downloaded syn v2.0.100
[INFO] [stderr]   Downloaded miniz_oxide v0.8.5
[INFO] [stderr]   Downloaded openssl v0.10.71
[INFO] [stderr]   Downloaded tokio-util v0.6.10
[INFO] [stderr]   Downloaded clap v4.5.32
[INFO] [stderr]   Downloaded glob v0.3.2
[INFO] [stderr]   Downloaded bytemuck v1.22.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.94
[INFO] [stderr]   Downloaded redox_syscall v0.5.10
[INFO] [stderr]   Downloaded iana-time-zone v0.1.61
[INFO] [stderr]   Downloaded smallvec v1.14.0
[INFO] [stderr]   Downloaded web-sys v0.3.77
[INFO] [stderr]   Downloaded libc v0.2.171
[INFO] [stderr]   Downloaded tokio v1.44.1
[INFO] [stderr]   Downloaded openssl-src v300.4.2+3.4.1
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7e1b9aaef9ac12f497b8ecb5018967af10c72051921f217e9876645d05102d01
[INFO] running `Command { std: "docker" "start" "-a" "7e1b9aaef9ac12f497b8ecb5018967af10c72051921f217e9876645d05102d01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7e1b9aaef9ac12f497b8ecb5018967af10c72051921f217e9876645d05102d01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e1b9aaef9ac12f497b8ecb5018967af10c72051921f217e9876645d05102d01", kill_on_drop: false }`
[INFO] [stdout] 7e1b9aaef9ac12f497b8ecb5018967af10c72051921f217e9876645d05102d01
[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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9ae610949031985c120b4ccdb8cc2eec3a110e50b21d546e69d7dcdd01df88d4
[INFO] running `Command { std: "docker" "start" "-a" "9ae610949031985c120b4ccdb8cc2eec3a110e50b21d546e69d7dcdd01df88d4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]    Compiling libc v0.2.171
[INFO] [stderr]    Compiling unicode-segmentation v1.12.0
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling unicode-width v0.1.14
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]     Checking pin-project-lite v0.2.16
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling typenum v1.18.0
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]     Checking once_cell v1.21.1
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling bytemuck v1.22.0
[INFO] [stderr]    Compiling base64 v0.13.1
[INFO] [stderr]    Compiling dtoa v0.4.8
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling glob v0.3.2
[INFO] [stderr]     Checking tracing-core v0.1.33
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]     Checking futures-sink v0.3.31
[INFO] [stderr]     Checking futures-core v0.3.31
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]     Checking ryu v1.0.20
[INFO] [stderr]     Checking itoa v1.0.15
[INFO] [stderr]     Checking futures-channel v0.3.31
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking futures-io v0.3.31
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]     Checking smallvec v1.14.0
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]     Checking futures-task v0.3.31
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]     Checking log v0.4.26
[INFO] [stderr]     Checking half v2.5.0
[INFO] [stderr]     Checking iana-time-zone v0.1.61
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]     Checking bytes v1.10.1
[INFO] [stderr]     Checking clap_lex v0.7.4
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]     Checking anstyle v1.0.10
[INFO] [stderr]     Checking ciborium-ll v0.2.2
[INFO] [stderr]     Checking tracing-log v0.1.4
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking chrono v0.4.40
[INFO] [stderr]     Checking clap_builder v4.5.32
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking thread_local v1.1.8
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking blake2 v0.10.6
[INFO] [stderr]     Checking plotters v0.3.7
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking is-terminal v0.4.16
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking clap v4.5.32
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling structopt v0.3.26
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]     Checking preserves v5.0.0-rc.6
[INFO] [stderr]     Checking preserves-schema v6.0.0-rc.5
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling tracing-attributes v0.1.28
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling pin-project-internal v1.1.10
[INFO] [stderr]     Checking tokio v1.44.1
[INFO] [stderr]     Checking tracing v0.1.41
[INFO] [stderr]     Checking pin-project v1.1.10
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]    Compiling syndicate-schema-plugin v0.12.0-rc.1
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking tokio-util v0.6.10
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]     Checking tracing-serde v0.1.3
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking tracing-subscriber v0.2.25
[INFO] [stderr]     Checking criterion v0.5.1
[INFO] [stderr]    Compiling syndicate v0.44.0-rc.3 (/opt/rustwide/workdir)
[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(min_specialization)]
[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(min_specialization)]
[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 `syndicate` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `syndicate` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "9ae610949031985c120b4ccdb8cc2eec3a110e50b21d546e69d7dcdd01df88d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ae610949031985c120b4ccdb8cc2eec3a110e50b21d546e69d7dcdd01df88d4", kill_on_drop: false }`
[INFO] [stdout] 9ae610949031985c120b4ccdb8cc2eec3a110e50b21d546e69d7dcdd01df88d4
