[INFO] fetching crate xkv 0.1.51...
[INFO] checking xkv-0.1.51 against 1.95.0 for pr-155915
[INFO] extracting crate xkv 0.1.51 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate xkv 0.1.51
[INFO] finished tweaking crates.io crate xkv 0.1.51
[INFO] tweaked toml for crates.io crate xkv 0.1.51 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate xkv 0.1.51 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 xkv 0.1.51 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 linkme-impl v0.3.35
[INFO] [stderr]   Downloaded static_ v0.1.15
[INFO] [stderr]   Downloaded linkme v0.3.35
[INFO] [stderr]   Downloaded uuid v1.18.1
[INFO] [stderr]   Downloaded aok v0.1.18
[INFO] [stderr]   Downloaded cookie-factory v0.3.2
[INFO] [stderr]   Downloaded async_wrap v0.1.10
[INFO] [stderr]   Downloaded gensym v0.1.1
[INFO] [stderr]   Downloaded xboot v0.1.28
[INFO] [stderr]   Downloaded crc16 v0.4.0
[INFO] [stderr]   Downloaded fred-macros v0.1.0
[INFO] [stderr]   Downloaded err_exit v0.1.6
[INFO] [stderr]   Downloaded redis-protocol v6.0.0
[INFO] [stderr]   Downloaded zerocopy-derive v0.8.28
[INFO] [stderr]   Downloaded rustls-pki-types v1.13.0
[INFO] [stderr]   Downloaded syn v2.0.110
[INFO] [stderr]   Downloaded fred v10.1.0
[INFO] [stderr]   Downloaded cc v1.2.46
[INFO] [stderr]   Downloaded zerocopy v0.8.28
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 0f497d8dc24a232c610750d644ed309524e86a19e2d357a4b8ee49256861301b
[INFO] running `Command { std: "docker" "start" "-a" "0f497d8dc24a232c610750d644ed309524e86a19e2d357a4b8ee49256861301b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0f497d8dc24a232c610750d644ed309524e86a19e2d357a4b8ee49256861301b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f497d8dc24a232c610750d644ed309524e86a19e2d357a4b8ee49256861301b", kill_on_drop: false }`
[INFO] [stdout] 0f497d8dc24a232c610750d644ed309524e86a19e2d357a4b8ee49256861301b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 226af764f2501cdd7675a3da21c1af28f291e7eec7ea3ed87c7b418d568320f1
[INFO] running `Command { std: "docker" "start" "-a" "226af764f2501cdd7675a3da21c1af28f291e7eec7ea3ed87c7b418d568320f1", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling zerocopy v0.8.28
[INFO] [stderr]     Checking futures-channel v0.3.31
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling crc16 v0.4.0
[INFO] [stderr]     Checking rustls-pki-types v1.13.0
[INFO] [stderr]    Compiling linkme-impl v0.3.35
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]    Compiling rustls v0.23.35
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking bytes-utils v0.1.4
[INFO] [stderr]     Checking log v0.4.28
[INFO] [stderr]     Checking cookie-factory v0.3.2
[INFO] [stderr]     Checking once_cell v1.21.3
[INFO] [stderr]     Checking rustls-webpki v0.103.8
[INFO] [stderr]    Compiling linkme v0.3.35
[INFO] [stderr]     Checking sha-1 v0.10.1
[INFO] [stderr]     Checking arc-swap v1.7.1
[INFO] [stderr]     Checking urlencoding v2.1.3
[INFO] [stderr]     Checking aok v0.1.18
[INFO] [stderr]     Checking err_exit v0.1.6
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking mio v1.1.0
[INFO] [stderr]     Checking socket2 v0.6.1
[INFO] [stderr]     Checking parking_lot_core v0.9.12
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking parking_lot v0.12.5
[INFO] [stderr]     Checking socket2 v0.5.10
[INFO] [stderr]     Checking redis-protocol v6.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling zerofrom-derive v0.1.6
[INFO] [stderr]    Compiling yoke-derive v0.8.1
[INFO] [stderr]    Compiling zerovec-derive v0.11.2
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling tokio-macros v2.6.0
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling fred-macros v0.1.0
[INFO] [stderr]    Compiling async-trait v0.1.89
[INFO] [stderr]     Checking tokio v1.48.0
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking zerofrom v0.1.6
[INFO] [stderr]     Checking yoke v0.8.1
[INFO] [stderr]     Checking zerovec v0.11.5
[INFO] [stderr]     Checking zerotrie v0.2.3
[INFO] [stderr]     Checking tinystr v0.8.2
[INFO] [stderr]     Checking potential_utf v0.1.4
[INFO] [stderr]     Checking icu_collections v2.1.1
[INFO] [stderr]     Checking icu_locale_core v2.1.1
[INFO] [stderr]     Checking icu_provider v2.1.1
[INFO] [stderr]     Checking icu_properties v2.1.1
[INFO] [stderr]     Checking icu_normalizer v2.1.1
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]     Checking tokio-util v0.7.17
[INFO] [stderr]     Checking tokio-stream v0.1.17
[INFO] [stderr]     Checking idna_adapter v1.2.1
[INFO] [stderr]     Checking idna v1.1.0
[INFO] [stderr]     Checking url v2.5.7
[INFO] [stderr]     Checking fred v10.1.0
[INFO] [stderr]     Checking xkv v0.1.51 (/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(macro_metavar_expr)]
[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(macro_metavar_expr)]
[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 `xkv` (lib test) 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 `xkv` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "226af764f2501cdd7675a3da21c1af28f291e7eec7ea3ed87c7b418d568320f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "226af764f2501cdd7675a3da21c1af28f291e7eec7ea3ed87c7b418d568320f1", kill_on_drop: false }`
[INFO] [stdout] 226af764f2501cdd7675a3da21c1af28f291e7eec7ea3ed87c7b418d568320f1
