[INFO] fetching crate mkrevealslides 0.9.0...
[INFO] checking mkrevealslides-0.9.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate mkrevealslides 0.9.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate mkrevealslides 0.9.0
[INFO] finished tweaking crates.io crate mkrevealslides 0.9.0
[INFO] tweaked toml for crates.io crate mkrevealslides 0.9.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mkrevealslides 0.9.0 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] crate crates.io crate mkrevealslides 0.9.0 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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] 9d359fb9a5a62a4498e9619ca21721fa0ae37adcce48bea56421469d1b665f1b
[INFO] running `Command { std: "docker" "start" "-a" "9d359fb9a5a62a4498e9619ca21721fa0ae37adcce48bea56421469d1b665f1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d359fb9a5a62a4498e9619ca21721fa0ae37adcce48bea56421469d1b665f1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d359fb9a5a62a4498e9619ca21721fa0ae37adcce48bea56421469d1b665f1b", kill_on_drop: false }`
[INFO] [stdout] 9d359fb9a5a62a4498e9619ca21721fa0ae37adcce48bea56421469d1b665f1b
[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] 132085ad6f2634a2777fa2ab175b6fd29b636e6c9e5979f07a5d7303bb475830
[INFO] running `Command { std: "docker" "start" "-a" "132085ad6f2634a2777fa2ab175b6fd29b636e6c9e5979f07a5d7303bb475830", kill_on_drop: false }`
[INFO] [stderr]     Checking once_cell v1.13.0
[INFO] [stderr]    Compiling serde_derive v1.0.138
[INFO] [stderr]    Compiling ucd-trie v0.1.4
[INFO] [stderr]    Compiling serde v1.0.138
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking unic-char-range v0.9.0
[INFO] [stderr]     Checking unic-common v0.9.0
[INFO] [stderr]     Checking unic-ucd-version v0.9.0
[INFO] [stderr]     Checking unic-char-property v0.9.0
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]     Checking unic-ucd-segment v0.9.0
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking tracing-core v0.1.28
[INFO] [stderr]     Checking crossbeam-utils v0.8.10
[INFO] [stderr]    Compiling pulldown-cmark v0.9.1
[INFO] [stderr]    Compiling anyhow v1.0.58
[INFO] [stderr]     Checking tracing-log v0.1.3
[INFO] [stderr]     Checking unic-segment v0.9.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.22
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]     Checking clap v3.2.8
[INFO] [stderr]     Checking globset v0.4.9
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]     Checking ignore v0.4.18
[INFO] [stderr]     Checking globwalk v0.8.1
[INFO] [stderr]     Checking natord v1.0.9
[INFO] [stderr]     Checking tracing-subscriber v0.3.14
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]     Checking tracing v0.1.35
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking serde_json v1.0.82
[INFO] [stderr]     Checking serde_yaml v0.8.24
[INFO] [stderr]     Checking tera v1.16.0
[INFO] [stderr]     Checking mkrevealslides v0.9.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ui/cli.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         title: Option<String>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mkrevealslides` (lib test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/ui/cli.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |         title: Option<String>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mkrevealslides` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "132085ad6f2634a2777fa2ab175b6fd29b636e6c9e5979f07a5d7303bb475830", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "132085ad6f2634a2777fa2ab175b6fd29b636e6c9e5979f07a5d7303bb475830", kill_on_drop: false }`
[INFO] [stdout] 132085ad6f2634a2777fa2ab175b6fd29b636e6c9e5979f07a5d7303bb475830