[INFO] fetching crate xwebtransport-wtransport 0.2.0...
[INFO] checking xwebtransport-wtransport-0.2.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate xwebtransport-wtransport 0.2.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate xwebtransport-wtransport 0.2.0
[INFO] finished tweaking crates.io crate xwebtransport-wtransport 0.2.0
[INFO] tweaked toml for crates.io crate xwebtransport-wtransport 0.2.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate xwebtransport-wtransport 0.2.0 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] Updating crates.io index
[INFO] [stderr] Locking 177 packages to latest compatible versions
[INFO] [stderr] Adding generic-array v0.14.7 (available: v0.14.9)
[INFO] [stderr] Adding wtransport v0.1.14 (available: v0.6.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a68e7fc3903b9464540e35adc99c4b53dec1abc6532b2cdf41bdee0fceb25bfb
[INFO] running `Command { std: "docker" "start" "-a" "a68e7fc3903b9464540e35adc99c4b53dec1abc6532b2cdf41bdee0fceb25bfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a68e7fc3903b9464540e35adc99c4b53dec1abc6532b2cdf41bdee0fceb25bfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a68e7fc3903b9464540e35adc99c4b53dec1abc6532b2cdf41bdee0fceb25bfb", kill_on_drop: false }`
[INFO] [stdout] a68e7fc3903b9464540e35adc99c4b53dec1abc6532b2cdf41bdee0fceb25bfb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=forbid -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 12c49117a46a165a02a3849f050c2790670fb8b7e2b9a7ed30ef289ffd08b8ec
[INFO] running `Command { std: "docker" "start" "-a" "12c49117a46a165a02a3849f050c2790670fb8b7e2b9a7ed30ef289ffd08b8ec", kill_on_drop: false }`
[INFO] [stderr] Compiling ring v0.17.14
[INFO] [stderr] Checking time v0.3.44
[INFO] [stderr] Compiling displaydoc v0.2.5
[INFO] [stderr] Compiling asn1-rs-impl v0.2.0
[INFO] [stderr] Checking rusticata-macros v4.1.0
[INFO] [stderr] Compiling tracing-attributes v0.1.30
[INFO] [stderr] Checking tokio v1.48.0
[INFO] [stderr] Compiling asn1-rs-derive v0.5.1
[INFO] [stderr] Compiling rustls v0.21.12
[INFO] [stderr] Compiling oid-registry v0.7.1
[INFO] [stderr] Checking ring v0.16.20
[INFO] [stderr] Checking num-bigint v0.4.6
[INFO] [stderr] Checking serde v1.0.228
[INFO] [stderr] Checking socket2 v0.5.10
[INFO] [stderr] Checking base64 v0.22.1
[INFO] [stderr] Checking rustls-pemfile v2.2.0
[INFO] [stderr] Checking octets v0.3.3
[INFO] [stderr] Checking httlib-huffman v0.3.4
[INFO] [stderr] Checking rustls-native-certs v0.7.3
[INFO] [stderr] Checking pem v3.0.6
[INFO] [stderr] Checking sha2 v0.10.9
[INFO] [stderr] Checking tinystr v0.8.2
[INFO] [stderr] Checking zerotrie v0.2.3
[INFO] [stderr] Checking icu_collections v2.1.1
[INFO] [stderr] Checking icu_locale_core v2.1.1
[INFO] [stderr] Checking tracing v0.1.41
[INFO] [stderr] Checking quinn-udp v0.4.1
[INFO] [stderr] Checking asn1-rs v0.6.2
[INFO] [stderr] Checking yasna v0.5.2
[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 der-parser v9.0.0
[INFO] [stderr] Checking idna_adapter v1.2.1
[INFO] [stderr] Checking x509-parser v0.16.0
[INFO] [stderr] Checking idna v1.1.0
[INFO] [stderr] Checking url v2.5.7
[INFO] [stderr] Checking xwebtransport-core v0.2.0
[INFO] [stderr] Checking xwebtransport-error v0.2.0
[INFO] [stderr] Checking xwebtransport-tests v0.2.0
[INFO] [stderr] Checking wtransport-proto v0.1.14
[INFO] [stderr] Checking sct v0.7.1
[INFO] [stderr] Checking rustls-webpki v0.101.7
[INFO] [stderr] Checking rcgen v0.13.2
[INFO] [stderr] Checking quinn-proto v0.10.6
[INFO] [stderr] Checking quinn v0.10.2
[INFO] [stderr] Checking wtransport v0.1.14
[INFO] [stderr] Checking xwebtransport-wtransport v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result