[INFO] fetching crate xsmtp 0.1.19...
[INFO] testing xsmtp-0.1.19 against 1.90.0 for beta-1.91-3
[INFO] extracting crate xsmtp 0.1.19 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate xsmtp 0.1.19
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate xsmtp 0.1.19
[INFO] tweaked toml for crates.io crate xsmtp 0.1.19 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate xsmtp 0.1.19 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] crate crates.io crate xsmtp 0.1.19 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded static_init_macro v1.0.4
[INFO] [stderr]   Downloaded quote v1.0.38
[INFO] [stderr]   Downloaded unicode-ident v1.0.17
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[INFO] [stderr]   Downloaded tempfile v3.17.1
[INFO] [stderr]   Downloaded redox_syscall v0.5.8
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[INFO] [stderr]   Downloaded ryu v1.0.19
[INFO] [stderr]   Downloaded derive_arbitrary v1.4.1
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[INFO] [stderr]   Downloaded constant_time_eq v0.3.1
[INFO] [stderr]   Downloaded deflate64 v0.1.9
[INFO] [stderr]   Downloaded lzma-rs v0.3.0
[INFO] [stderr]   Downloaded lockfree-object-pool v0.1.6
[INFO] [stderr]   Downloaded log v0.4.25
[INFO] [stderr]   Downloaded zopfli v0.8.1
[INFO] [stderr]   Downloaded pkg-config v0.3.31
[INFO] [stderr]   Downloaded mail-builder v0.4.1
[INFO] [stderr]   Downloaded smtp-proto v0.1.5
[INFO] [stderr]   Downloaded tokio-rustls v0.26.1
[INFO] [stderr]   Downloaded mail-send-fork v0.5.0
[INFO] [stderr]   Downloaded thiserror v2.0.11
[INFO] [stderr]   Downloaded static_init v1.0.3
[INFO] [stderr]   Downloaded bytes v1.10.0
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[INFO] [stderr]   Downloaded proc-macro2 v1.0.93
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6024f9ac492eaca3e6403daf6af7c9715e50abca2d907eaead6f7a849db3e26e
[INFO] running `Command { std: "docker" "start" "-a" "6024f9ac492eaca3e6403daf6af7c9715e50abca2d907eaead6f7a849db3e26e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6024f9ac492eaca3e6403daf6af7c9715e50abca2d907eaead6f7a849db3e26e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6024f9ac492eaca3e6403daf6af7c9715e50abca2d907eaead6f7a849db3e26e", kill_on_drop: false }`
[INFO] [stdout] 6024f9ac492eaca3e6403daf6af7c9715e50abca2d907eaead6f7a849db3e26e
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dd46c27b6530846c1829e34c412c0e14fd73dfea89684ad4ed339fbff31a3574
[INFO] running `Command { std: "docker" "start" "-a" "dd46c27b6530846c1829e34c412c0e14fd73dfea89684ad4ed339fbff31a3574", kill_on_drop: false }`
[INFO] [stderr]    Compiling once_cell v1.20.3
[INFO] [stderr]    Compiling smallvec v1.14.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling bytes v1.10.0
[INFO] [stderr]    Compiling log v0.4.25
[INFO] [stderr]    Compiling bitflags v2.8.0
[INFO] [stderr]    Compiling jobserver v0.1.32
[INFO] [stderr]    Compiling rustls v0.21.12
[INFO] [stderr]    Compiling openssl v0.10.71
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling indexmap v2.7.1
[INFO] [stderr]    Compiling rustls-pki-types v1.11.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]    Compiling instant v0.1.13
[INFO] [stderr]    Compiling zstd-safe v7.2.2
[INFO] [stderr]    Compiling match_cfg v0.1.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling tracing-core v0.1.33
[INFO] [stderr]    Compiling linux-raw-sys v0.4.15
[INFO] [stderr]    Compiling hostname v0.3.1
[INFO] [stderr]    Compiling tinyvec v1.8.1
[INFO] [stderr]    Compiling static_init v1.0.3
[INFO] [stderr]    Compiling cc v1.2.14
[INFO] [stderr]    Compiling inout v0.1.3
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[INFO] [stderr]    Compiling getrandom v0.3.1
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling http v0.2.12
[INFO] [stderr]    Compiling parking_lot v0.12.3
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[INFO] [stderr]    Compiling zerocopy v0.8.20
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[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling crc v3.2.1
[INFO] [stderr]    Compiling resolv-conf v0.7.0
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[INFO] [stderr]    Compiling deranged v0.3.11
[INFO] [stderr]    Compiling lru-cache v0.1.2
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling cipher v0.4.4
[INFO] [stderr]    Compiling hmac v0.12.1
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[INFO] [stderr]    Compiling rustls v0.23.23
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[INFO] [stderr]    Compiling bumpalo v3.17.0
[INFO] [stderr]    Compiling simd-adler32 v0.3.7
[INFO] [stderr]    Compiling anyhow v1.0.96
[INFO] [stderr]    Compiling gethostname v1.0.0
[INFO] [stderr]    Compiling aes v0.8.4
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[INFO] [stderr]    Compiling pbkdf2 v0.12.2
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[INFO] [stderr]    Compiling time v0.3.37
[INFO] [stderr]    Compiling sha1 v0.10.6
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[INFO] [stderr]    Compiling ryu v1.0.19
[INFO] [stderr]    Compiling deflate64 v0.1.9
[INFO] [stderr]    Compiling constant_time_eq v0.3.1
[INFO] [stderr]    Compiling mail-builder v0.4.1
[INFO] [stderr]    Compiling rustls-pemfile v2.2.0
[INFO] [stderr]    Compiling quick-xml v0.37.2
[INFO] [stderr]    Compiling gethostname v0.5.0
[INFO] [stderr]    Compiling webpki-roots v0.26.8
[INFO] [stderr]    Compiling aok v0.1.17
[INFO] [stderr]    Compiling smtp-proto v0.1.5
[INFO] [stderr]    Compiling md5 v0.7.0
[INFO] [stderr]    Compiling const-str v0.6.2
[INFO] [stderr]    Compiling ring v0.17.9
[INFO] [stderr]    Compiling openssl-sys v0.9.106
[INFO] [stderr]    Compiling zstd-sys v2.0.14+zstd.1.5.7
[INFO] [stderr]    Compiling bzip2-sys v0.1.12+1.0.8
[INFO] [stderr]    Compiling rand_core v0.9.1
[INFO] [stderr]    Compiling native-tls v0.2.14
[INFO] [stderr]    Compiling bzip2 v0.4.4
[INFO] [stderr]    Compiling static_init_macro v1.0.4
[INFO] [stderr]    Compiling synstructure v0.13.1
[INFO] [stderr]    Compiling zerofrom-derive v0.1.5
[INFO] [stderr]    Compiling yoke-derive v0.7.5
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling zerovec-derive v0.10.3
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
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[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling futures-macro v0.3.31
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[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling zeroize_derive v1.4.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling async-trait v0.1.86
[INFO] [stderr]    Compiling enum-as-inner v0.6.1
[INFO] [stderr]    Compiling tokio v1.43.0
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling zeroize v1.8.1
[INFO] [stderr]    Compiling rustls-webpki v0.101.7
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling sct v0.7.1
[INFO] [stderr]    Compiling serde_derive v1.0.218
[INFO] [stderr]    Compiling thiserror-impl v2.0.11
[INFO] [stderr]    Compiling rustls-webpki v0.102.8
[INFO] [stderr]    Compiling hashify v0.2.6
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling zstd v0.13.3
[INFO] [stderr]    Compiling enum_dispatch v0.3.13
[INFO] [stderr]    Compiling ppv-lite86 v0.2.20
[INFO] [stderr]    Compiling zerofrom v0.1.5
[INFO] [stderr]    Compiling yoke v0.7.5
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling quick_cache v0.6.10
[INFO] [stderr]    Compiling zerovec v0.10.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling genv v0.1.16
[INFO] [stderr]    Compiling rand v0.9.0
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling mail-parser v0.10.2
[INFO] [stderr]    Compiling tinystr v0.7.6
[INFO] [stderr]    Compiling icu_collections v1.5.0
[INFO] [stderr]    Compiling serde v1.0.218
[INFO] [stderr]    Compiling icu_locid v1.5.0
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling tokio-util v0.7.13
[INFO] [stderr]    Compiling tokio-rustls v0.24.1
[INFO] [stderr]    Compiling trt v0.1.29
[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/trt-0.1.29/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![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 `trt` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "dd46c27b6530846c1829e34c412c0e14fd73dfea89684ad4ed339fbff31a3574", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd46c27b6530846c1829e34c412c0e14fd73dfea89684ad4ed339fbff31a3574", kill_on_drop: false }`
[INFO] [stdout] dd46c27b6530846c1829e34c412c0e14fd73dfea89684ad4ed339fbff31a3574