[INFO] cloning repository https://github.com/sunziping2016/thuhole-search
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sunziping2016/thuhole-search" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsunziping2016%2Fthuhole-search", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsunziping2016%2Fthuhole-search'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ec1c1345a0ad482afbe96834af60626b26c6d145
[INFO] checking sunziping2016/thuhole-search against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsunziping2016%2Fthuhole-search" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sunziping2016/thuhole-search
[INFO] finished tweaking git repo https://github.com/sunziping2016/thuhole-search
[INFO] tweaked toml for git repo https://github.com/sunziping2016/thuhole-search written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sunziping2016/thuhole-search 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 git repo https://github.com/sunziping2016/thuhole-search 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] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[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] 92e511adf0a93cde50aaa6210b1d3b456127e491950d17f5ccc3da2c43e73277
[INFO] running `Command { std: "docker" "start" "-a" "92e511adf0a93cde50aaa6210b1d3b456127e491950d17f5ccc3da2c43e73277", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92e511adf0a93cde50aaa6210b1d3b456127e491950d17f5ccc3da2c43e73277", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92e511adf0a93cde50aaa6210b1d3b456127e491950d17f5ccc3da2c43e73277", kill_on_drop: false }`
[INFO] [stdout] 92e511adf0a93cde50aaa6210b1d3b456127e491950d17f5ccc3da2c43e73277
[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] e6fd9c5bf0a71e6e016d01a61f6568078d2d0a5c0d7aa67482387aaae35f5eb1
[INFO] running `Command { std: "docker" "start" "-a" "e6fd9c5bf0a71e6e016d01a61f6568078d2d0a5c0d7aa67482387aaae35f5eb1", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling siphasher v0.3.10
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking matrixmultiply v0.3.2
[INFO] [stderr]     Checking phf_shared v0.10.0
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]    Compiling getrandom v0.2.5
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]     Checking ndarray v0.15.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling phf_generator v0.10.0
[INFO] [stderr]    Compiling phf_macros v0.10.0
[INFO] [stderr]    Compiling ctor v0.1.21
[INFO] [stderr]     Checking phf v0.10.1
[INFO] [stderr]     Checking thulac-rs v0.1.0 (/opt/rustwide/workdir/thulac-rs)
[INFO] [stdout] warning: the feature `char_indices_offset` has been stable since 1.82.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> thulac-rs/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(char_indices_offset)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `result_flattening` has been stable since 1.89.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> thulac-rs/src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(result_flattening)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `char_indices_offset` has been stable since 1.82.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> thulac-rs/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(char_indices_offset)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `result_flattening` has been stable since 1.89.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> thulac-rs/src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(result_flattening)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `stdin_forwarders` has been stable since 1.62.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> thulac-rs/src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(stdin_forwarders)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `result_flattening` has been stable since 1.89.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> thulac-rs/src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(result_flattening)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `stdin_forwarders` has been stable since 1.62.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> thulac-rs/src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(stdin_forwarders)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `result_flattening` has been stable since 1.89.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> thulac-rs/src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(result_flattening)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> thulac-rs/src/main.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 15 |       let path = PathBuf::from_str(
[INFO] [stdout]    |  ________________^
[INFO] [stdout] 16 | |         &env::var("THULAC_MODEL_PATH").expect("failed to fetch env THULAC_MODEL_PATH"),
[INFO] [stdout] 17 | |     )
[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<PathBuf, Infallible>
[INFO] [stdout]   --> thulac-rs/src/main.rs:15:16
[INFO] [stdout]    |
[INFO] [stdout] 15 |       let path = PathBuf::from_str(
[INFO] [stdout]    |  ________________^
[INFO] [stdout] 16 | |         &env::var("THULAC_MODEL_PATH").expect("failed to fetch env THULAC_MODEL_PATH"),
[INFO] [stdout] 17 | |     )
[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 `thulac-rs` (bin "thulac-rs") due to 1 previous error; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `thulac-rs` (bin "thulac-rs" test) due to 1 previous error; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "e6fd9c5bf0a71e6e016d01a61f6568078d2d0a5c0d7aa67482387aaae35f5eb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6fd9c5bf0a71e6e016d01a61f6568078d2d0a5c0d7aa67482387aaae35f5eb1", kill_on_drop: false }`
[INFO] [stdout] e6fd9c5bf0a71e6e016d01a61f6568078d2d0a5c0d7aa67482387aaae35f5eb1