[INFO] fetching crate rsdoc 0.3.0...
[INFO] checking rsdoc-0.3.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate rsdoc 0.3.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate rsdoc 0.3.0
[INFO] finished tweaking crates.io crate rsdoc 0.3.0
[INFO] tweaked toml for crates.io crate rsdoc 0.3.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rsdoc 0.3.0 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 107 packages to latest compatible versions
[INFO] [stderr]       Adding clap v3.2.25 (available: v4.5.51)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.110)
[INFO] [stderr]       Adding ureq v2.12.1 (available: v3.1.4)
[INFO] [stderr]       Adding wasi v0.10.0+wasi-snapshot-preview1 (available: v0.10.2+wasi-snapshot-preview1)
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 85b0b92ddc73fa397940b551f690b7962e4096b12cd21f12245861d19497c544
[INFO] running `Command { std: "docker" "start" "-a" "85b0b92ddc73fa397940b551f690b7962e4096b12cd21f12245861d19497c544", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "85b0b92ddc73fa397940b551f690b7962e4096b12cd21f12245861d19497c544", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85b0b92ddc73fa397940b551f690b7962e4096b12cd21f12245861d19497c544", kill_on_drop: false }`
[INFO] [stdout] 85b0b92ddc73fa397940b551f690b7962e4096b12cd21f12245861d19497c544
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 66325f84640e463f8ef309fe18e2cbfd2a73ff8ec57b0f9e618ed90f9581a093
[INFO] running `Command { std: "docker" "start" "-a" "66325f84640e463f8ef309fe18e2cbfd2a73ff8ec57b0f9e618ed90f9581a093", kill_on_drop: false }`
[INFO] [stderr]     Checking stable_deref_trait v1.2.1
[INFO] [stderr]     Checking writeable v0.6.2
[INFO] [stderr]     Checking litemap v0.8.1
[INFO] [stderr]     Checking zeroize v1.8.2
[INFO] [stderr]     Checking smallvec v1.15.1
[INFO] [stderr]    Compiling icu_normalizer_data v2.1.1
[INFO] [stderr]    Compiling icu_properties_data v2.1.1
[INFO] [stderr]     Checking libc v0.2.177
[INFO] [stderr]     Checking untrusted v0.9.0
[INFO] [stderr]    Compiling ring v0.17.14
[INFO] [stderr]    Compiling crc32fast v1.5.0
[INFO] [stderr]     Checking simd-adler32 v0.3.7
[INFO] [stderr]     Checking zerofrom v0.1.6
[INFO] [stderr]     Checking utf8_iter v1.0.4
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]     Checking percent-encoding v2.3.2
[INFO] [stderr]     Checking once_cell v1.21.3
[INFO] [stderr]     Checking adler2 v2.0.1
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking yoke v0.8.1
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking rustls-pki-types v1.13.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking os_str_bytes v6.6.1
[INFO] [stderr]     Checking subtle v2.6.1
[INFO] [stderr]     Checking log v0.4.28
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]     Checking miniz_oxide v0.8.9
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking form_urlencoded v1.2.2
[INFO] [stderr]     Checking rustc-serialize v0.3.25
[INFO] [stderr]     Checking zerovec v0.11.5
[INFO] [stderr]     Checking zerotrie v0.2.3
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking textwrap v0.16.2
[INFO] [stderr]     Checking base64 v0.22.1
[INFO] [stderr]     Checking deflate v1.0.0
[INFO] [stderr]     Checking syn v1.0.109
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking webpki-roots v1.0.4
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling clap_derive v3.2.25
[INFO] [stderr]     Checking webpki-roots v0.26.11
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]     Checking flate2 v1.1.5
[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 rand v0.3.23
[INFO] [stderr]     Checking icu_locale_core v2.1.1
[INFO] [stderr]     Checking clap v3.2.25
[INFO] [stderr]    Compiling rustls v0.23.35
[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 rustls-webpki v0.103.8
[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 ureq v2.12.1
[INFO] [stderr]     Checking rsdoc v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/save_http_png.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     url: String,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/save_http_png.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     output: Option<String>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/save_http_png.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     url: String,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/save_http_png.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     output: Option<String>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rsdoc` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `rsdoc` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "66325f84640e463f8ef309fe18e2cbfd2a73ff8ec57b0f9e618ed90f9581a093", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66325f84640e463f8ef309fe18e2cbfd2a73ff8ec57b0f9e618ed90f9581a093", kill_on_drop: false }`
[INFO] [stdout] 66325f84640e463f8ef309fe18e2cbfd2a73ff8ec57b0f9e618ed90f9581a093