[INFO] fetching crate ropenttd 0.0.2...
[INFO] checking ropenttd-0.0.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate ropenttd 0.0.2 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate ropenttd 0.0.2
[INFO] finished tweaking crates.io crate ropenttd 0.0.2
[INFO] tweaked toml for crates.io crate ropenttd 0.0.2 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ropenttd 0.0.2 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 ropenttd 0.0.2 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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 913b85b0930ae5bcd0d6f23707dfd0623e1a1e6b5bd0c0a9e89dd6160fd38210
[INFO] running `Command { std: "docker" "start" "-a" "913b85b0930ae5bcd0d6f23707dfd0623e1a1e6b5bd0c0a9e89dd6160fd38210", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "913b85b0930ae5bcd0d6f23707dfd0623e1a1e6b5bd0c0a9e89dd6160fd38210", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "913b85b0930ae5bcd0d6f23707dfd0623e1a1e6b5bd0c0a9e89dd6160fd38210", kill_on_drop: false }`
[INFO] [stdout] 913b85b0930ae5bcd0d6f23707dfd0623e1a1e6b5bd0c0a9e89dd6160fd38210
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 5c5aefe7bb928ab70a39bda720cf63a4c6ad304f474ff4040d31f357868b24ac
[INFO] running `Command { std: "docker" "start" "-a" "5c5aefe7bb928ab70a39bda720cf63a4c6ad304f474ff4040d31f357868b24ac", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling libc v0.2.152
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking bytecount v0.6.7
[INFO] [stderr]     Checking textwrap v0.16.0
[INFO] [stderr]    Compiling convert_case v0.5.0
[INFO] [stderr]     Checking papergrid v0.5.1
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]     Checking subslice v0.2.2
[INFO] [stderr]    Compiling rust-lzma v0.5.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling darling_core v0.13.4
[INFO] [stderr]    Compiling clap_derive v3.2.25
[INFO] [stderr]    Compiling tabled_derive v0.4.0
[INFO] [stderr]     Checking tabled v0.8.0
[INFO] [stderr]    Compiling darling_macro v0.13.4
[INFO] [stderr]     Checking clap v3.2.25
[INFO] [stderr]    Compiling darling v0.13.4
[INFO] [stderr]    Compiling argopt-impl v0.3.0
[INFO] [stderr]     Checking argopt v0.3.0
[INFO] [stderr]     Checking ropenttd v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/vehicle.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |           todo!("??");
[INFO] [stdout]    |           ----------- any code following this expression is unreachable
[INFO] [stdout] 65 |
[INFO] [stdout] 66 | /         Ok(Self {
[INFO] [stdout] 67 | |         })
[INFO] [stdout]    | |__________^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/vehicle.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |           todo!("??");
[INFO] [stdout]    |           ----------- any code following this expression is unreachable
[INFO] [stdout] 65 |
[INFO] [stdout] 66 | /         Ok(Self {
[INFO] [stdout] 67 | |         })
[INFO] [stdout]    | |__________^ unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> src/string_reader.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct OpenString {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 16 |     pub id: StringID,
[INFO] [stdout]    |         ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vehicle`
[INFO] [stdout]   --> src/vehicle.rs:85:13
[INFO] [stdout]    |
[INFO] [stdout] 85 |         let vehicle = &vehicles.trains[0];
[INFO] [stdout]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_vehicle`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> src/string_reader.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct OpenString {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 16 |     pub id: StringID,
[INFO] [stdout]    |         ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     file: 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/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     file: 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 `ropenttd` (bin "ropenttd" test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `ropenttd` (bin "ropenttd") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "5c5aefe7bb928ab70a39bda720cf63a4c6ad304f474ff4040d31f357868b24ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c5aefe7bb928ab70a39bda720cf63a4c6ad304f474ff4040d31f357868b24ac", kill_on_drop: false }`
[INFO] [stdout] 5c5aefe7bb928ab70a39bda720cf63a4c6ad304f474ff4040d31f357868b24ac