[INFO] fetching crate ushcn 0.2.5...
[INFO] checking ushcn-0.2.5 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate ushcn 0.2.5 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate ushcn 0.2.5
[INFO] finished tweaking crates.io crate ushcn 0.2.5
[INFO] tweaked toml for crates.io crate ushcn 0.2.5 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ushcn 0.2.5 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 ushcn 0.2.5 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]     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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] de97193ccca172f6352268ff6bf9bed71863a7cebc6bd6768d2b867f6ab8536d
[INFO] running `Command { std: "docker" "start" "-a" "de97193ccca172f6352268ff6bf9bed71863a7cebc6bd6768d2b867f6ab8536d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de97193ccca172f6352268ff6bf9bed71863a7cebc6bd6768d2b867f6ab8536d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de97193ccca172f6352268ff6bf9bed71863a7cebc6bd6768d2b867f6ab8536d", kill_on_drop: false }`
[INFO] [stdout] de97193ccca172f6352268ff6bf9bed71863a7cebc6bd6768d2b867f6ab8536d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 362ecd4bbc58de482bb3954232c1ada77e817fa67cb65ca63b72bf2486cf6469
[INFO] running `Command { std: "docker" "start" "-a" "362ecd4bbc58de482bb3954232c1ada77e817fa67cb65ca63b72bf2486cf6469", kill_on_drop: false }`
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]     Checking arrow-schema v52.1.0
[INFO] [stderr]     Checking lexical-util v0.8.5
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]    Compiling serde v1.0.204
[INFO] [stderr]    Compiling semver v1.0.23
[INFO] [stderr]    Compiling syn v2.0.71
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking regex-syntax v0.8.4
[INFO] [stderr]    Compiling zstd-safe v7.2.0
[INFO] [stderr]     Checking linux-raw-sys v0.4.14
[INFO] [stderr]    Compiling serde_json v1.0.120
[INFO] [stderr]     Checking anstyle-parse v0.2.4
[INFO] [stderr]     Checking csv-core v0.1.11
[INFO] [stderr]     Checking http v1.1.0
[INFO] [stderr]     Checking anstyle-query v1.1.0
[INFO] [stderr]     Checking colorchoice v1.0.1
[INFO] [stderr]    Compiling portable-atomic v1.6.0
[INFO] [stderr]     Checking is_terminal_polyfill v1.70.0
[INFO] [stderr]     Checking lexical-write-integer v0.8.5
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[INFO] [stderr]    Compiling rustc_version v0.4.0
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[INFO] [stderr]     Checking twox-hash v1.6.3
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[INFO] [stderr]     Checking lexical-write-float v0.8.5
[INFO] [stderr]     Checking clap_lex v0.7.1
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[INFO] [stderr]     Checking rustix v0.38.34
[INFO] [stderr]    Compiling cc v1.1.1
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[INFO] [stderr]     Checking flate2 v1.0.30
[INFO] [stderr]     Checking console v0.15.8
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[INFO] [stderr]     Checking brotli v6.0.0
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[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking half v2.4.1
[INFO] [stderr]     Checking chrono v0.4.38
[INFO] [stderr]     Checking atoi v2.0.0
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[INFO] [stderr]     Checking num-iter v0.1.45
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[INFO] [stderr]    Compiling flatbuffers v24.3.25
[INFO] [stderr]     Checking ordered-float v2.10.1
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[INFO] [stderr]    Compiling seq-macro v0.3.5
[INFO] [stderr]     Checking dirs v5.0.1
[INFO] [stderr]     Checking thrift v0.17.0
[INFO] [stderr]     Checking xattr v1.3.1
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[INFO] [stderr]     Checking indicatif v0.17.8
[INFO] [stderr]     Checking tar v0.4.41
[INFO] [stderr]     Checking regex-automata v0.4.7
[INFO] [stderr]    Compiling openssl-sys v0.9.102
[INFO] [stderr]    Compiling zstd-sys v2.0.11+zstd.1.5.6
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]    Compiling openssl v0.10.64
[INFO] [stderr]    Compiling native-tls v0.2.12
[INFO] [stderr]     Checking num v0.4.3
[INFO] [stderr]     Checking arrow-buffer v52.1.0
[INFO] [stderr]     Checking csv v1.3.0
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
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[INFO] [stderr]     Checking arrow-array v52.1.0
[INFO] [stderr]    Compiling tokio-macros v2.3.0
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling pin-project-internal v1.1.5
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling clap_derive v4.5.8
[INFO] [stderr]     Checking regex v1.10.5
[INFO] [stderr]     Checking tokio v1.38.0
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[INFO] [stderr]     Checking zstd v0.13.2
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[INFO] [stderr]     Checking clap v4.5.9
[INFO] [stderr]     Checking arrow-select v52.1.0
[INFO] [stderr]     Checking arrow-row v52.1.0
[INFO] [stderr]     Checking arrow-arith v52.1.0
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[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking arrow-ipc v52.1.0
[INFO] [stderr]     Checking arrow-json v52.1.0
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[INFO] [stderr]     Checking tokio-util v0.7.11
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[INFO] [stderr]     Checking tokio-native-tls v0.3.1
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[INFO] [stderr]     Checking parquet v52.1.0
[INFO] [stderr]     Checking arrow v52.1.0
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[INFO] [stderr]     Checking hyper-tls v0.6.0
[INFO] [stderr]     Checking reqwest v0.12.5
[INFO] [stderr]     Checking ushcn v0.2.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `command`
[INFO] [stdout]  --> src/cli/mod.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | use clap::{command, Parser};
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `command`
[INFO] [stdout]  --> src/cli/mod.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | use clap::{command, Parser};
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `dataset_to_string` is never used
[INFO] [stdout]   --> src/cli/command/daily.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn dataset_to_string(dataset: &Dataset) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `month` is never read
[INFO] [stdout]   --> src/reading/monthly.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub struct MonthlyReading {
[INFO] [stdout]    |            -------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub month: Option<u16>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MonthlyReading` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]    --> src/cli/command/stations.rs:168:5
[INFO] [stdout]     |
[INFO] [stdout] 168 |     s.trim().parse::<String>().ok().filter(|v| !v.is_empty())
[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 `ushcn` (bin "ushcn") due to 1 previous error; 3 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: function `dataset_to_string` is never used
[INFO] [stdout]   --> src/cli/command/daily.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn dataset_to_string(dataset: &Dataset) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `month` is never read
[INFO] [stdout]   --> src/reading/monthly.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub struct MonthlyReading {
[INFO] [stdout]    |            -------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub month: Option<u16>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MonthlyReading` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]    --> src/cli/command/stations.rs:168:5
[INFO] [stdout]     |
[INFO] [stdout] 168 |     s.trim().parse::<String>().ok().filter(|v| !v.is_empty())
[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 `ushcn` (bin "ushcn" test) due to 1 previous error; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "362ecd4bbc58de482bb3954232c1ada77e817fa67cb65ca63b72bf2486cf6469", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "362ecd4bbc58de482bb3954232c1ada77e817fa67cb65ca63b72bf2486cf6469", kill_on_drop: false }`
[INFO] [stdout] 362ecd4bbc58de482bb3954232c1ada77e817fa67cb65ca63b72bf2486cf6469