[INFO] fetching crate mdoc 0.3.0...
[INFO] checking mdoc-0.3.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate mdoc 0.3.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate mdoc 0.3.0
[INFO] finished tweaking crates.io crate mdoc 0.3.0
[INFO] tweaked toml for crates.io crate mdoc 0.3.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mdoc 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] crate crates.io crate mdoc 0.3.0 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 9b1ccb83935e30c7336295f4bf02bcfda97bde8b64140b2d2d7e415ece3f7058
[INFO] running `Command { std: "docker" "start" "-a" "9b1ccb83935e30c7336295f4bf02bcfda97bde8b64140b2d2d7e415ece3f7058", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9b1ccb83935e30c7336295f4bf02bcfda97bde8b64140b2d2d7e415ece3f7058", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b1ccb83935e30c7336295f4bf02bcfda97bde8b64140b2d2d7e415ece3f7058", kill_on_drop: false }`
[INFO] [stdout] 9b1ccb83935e30c7336295f4bf02bcfda97bde8b64140b2d2d7e415ece3f7058
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] f1e0e59418c2471e10b67a66adf3d12527191b5a0bf3f8005ce6efde56e13b73
[INFO] running `Command { std: "docker" "start" "-a" "f1e0e59418c2471e10b67a66adf3d12527191b5a0bf3f8005ce6efde56e13b73", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.107
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling pkg-config v0.3.22
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling anyhow v1.0.45
[INFO] [stderr]    Compiling tectonic_cfg_support v0.1.3
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]    Compiling tectonic_dep_support v0.1.0
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling tokio v1.14.0
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking cpufeatures v0.2.1
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
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[INFO] [stderr]    Compiling indexmap v1.7.0
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[INFO] [stderr]    Compiling getrandom v0.1.16
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[INFO] [stderr]     Checking openssl-probe v0.1.4
[INFO] [stderr]     Checking tracing v0.1.29
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[INFO] [stderr]    Compiling rand_core v0.5.1
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[INFO] [stderr]     Checking app_dirs2 v2.3.3
[INFO] [stderr]    Compiling libz-sys v1.1.3
[INFO] [stderr]    Compiling tectonic_bridge_core v0.3.0
[INFO] [stderr]    Compiling openssl-sys v0.9.70
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[INFO] [stderr]     Checking digest v0.9.0
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[INFO] [stderr]    Compiling encoding_rs v0.8.29
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[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking regex-syntax v0.6.25
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[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]    Compiling terminfo v0.7.3
[INFO] [stderr]     Checking rand_core v0.6.3
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[INFO] [stderr]    Compiling tectonic_engine_xdvipdfmx v0.1.3
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[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking inotify-sys v0.1.5
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]    Compiling num-traits v0.2.14
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[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
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[INFO] [stderr]     Checking byteorder v1.4.3
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[INFO] [stderr]     Checking ipnet v2.3.1
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[INFO] [stderr]     Checking rand_chacha v0.3.1
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[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking which v4.2.2
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking inotify v0.7.1
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking webpki v0.22.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking filetime v0.2.15
[INFO] [stderr]     Checking object v0.27.1
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking notify v4.0.17
[INFO] [stderr]     Checking sct v0.7.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]    Compiling darling_core v0.12.4
[INFO] [stderr]     Checking tokio-util v0.6.9
[INFO] [stderr]     Checking utf8-width v0.1.5
[INFO] [stderr]     Checking pathdiff v0.2.1
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]    Compiling tectonic v0.8.0
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]     Checking open v1.7.1
[INFO] [stderr]     Checking h2 v0.3.7
[INFO] [stderr]     Checking byte-unit v4.0.13
[INFO] [stderr]     Checking rustls v0.20.2
[INFO] [stderr]     Checking webpki-roots v0.22.1
[INFO] [stderr]     Checking tectonic_xdv v0.1.12
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking quick-xml v0.22.0
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking chunked_transfer v1.4.0
[INFO] [stderr]     Checking globset v0.4.6
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking dirs v4.0.0
[INFO] [stderr]     Checking ignore v0.4.17
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking command-group v1.0.8
[INFO] [stderr]    Compiling darling_macro v0.12.4
[INFO] [stderr]    Compiling darling v0.12.4
[INFO] [stderr]    Compiling derive_builder_core v0.10.2
[INFO] [stderr]     Checking structopt v0.3.25
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking tectonic_io_base v0.3.1
[INFO] [stderr]     Checking clearscreen v1.0.7
[INFO] [stderr]     Checking zip v0.5.13
[INFO] [stderr]     Checking ureq v2.4.0
[INFO] [stderr]    Compiling derive_builder_macro v0.10.2
[INFO] [stderr]     Checking hyper v0.14.14
[INFO] [stderr]     Checking derive_builder v0.10.2
[INFO] [stderr]     Checking watchexec v1.17.1
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.6
[INFO] [stderr]     Checking tectonic_geturl v0.3.0
[INFO] [stderr]     Checking tectonic_bundles v0.2.0
[INFO] [stderr]     Checking mdoc v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 | /         #[structopt(short = "o", long = "output")]
[INFO] [stdout] 32 | |         /// The type of output you want to build to.
[INFO] [stdout] 33 | |         output: 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 `mdoc` (bin "mdoc") 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<String, Infallible>
[INFO] [stdout]   --> src/main.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 | /         #[structopt(short = "o", long = "output")]
[INFO] [stdout] 32 | |         /// The type of output you want to build to.
[INFO] [stdout] 33 | |         output: 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 `mdoc` (bin "mdoc" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "f1e0e59418c2471e10b67a66adf3d12527191b5a0bf3f8005ce6efde56e13b73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1e0e59418c2471e10b67a66adf3d12527191b5a0bf3f8005ce6efde56e13b73", kill_on_drop: false }`
[INFO] [stdout] f1e0e59418c2471e10b67a66adf3d12527191b5a0bf3f8005ce6efde56e13b73
