[INFO] fetching crate mcwr 0.2.3...
[INFO] checking mcwr-0.2.3 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate mcwr 0.2.3 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate mcwr 0.2.3
[INFO] finished tweaking crates.io crate mcwr 0.2.3
[INFO] tweaked toml for crates.io crate mcwr 0.2.3 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mcwr 0.2.3 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 mcwr 0.2.3 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] 255bcde2f5e53ee2114881fb4886543c42c4962524db99e36eac14938ce49372
[INFO] running `Command { std: "docker" "start" "-a" "255bcde2f5e53ee2114881fb4886543c42c4962524db99e36eac14938ce49372", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "255bcde2f5e53ee2114881fb4886543c42c4962524db99e36eac14938ce49372", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "255bcde2f5e53ee2114881fb4886543c42c4962524db99e36eac14938ce49372", kill_on_drop: false }`
[INFO] [stdout] 255bcde2f5e53ee2114881fb4886543c42c4962524db99e36eac14938ce49372
[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] 75546abf0595953544e664a3d05d706a68b7bd4e9cb2703acb70906ddf310a1f
[INFO] running `Command { std: "docker" "start" "-a" "75546abf0595953544e664a3d05d706a68b7bd4e9cb2703acb70906ddf310a1f", kill_on_drop: false }`
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[INFO] [stderr]     Checking mcwr v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `modpack`
[INFO] [stdout]  --> src/main.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 | #[cfg(feature = "modpack")]
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: expected values for `feature` are: `console`, `default`, `dialoguer`, `en`, `es`, `export`, `indicatif`, `interactive`, and `translateutil`
[INFO] [stdout]   = help: consider adding `modpack` as a feature in `Cargo.toml`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]   = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::format`
[INFO] [stdout]  --> src/cline.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::fmt::format;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `modpack`
[INFO] [stdout]  --> src/main.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 | #[cfg(feature = "modpack")]
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: expected values for `feature` are: `console`, `default`, `dialoguer`, `en`, `es`, `export`, `indicatif`, `interactive`, and `translateutil`
[INFO] [stdout]   = help: consider adding `modpack` as a feature in `Cargo.toml`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]   = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::format`
[INFO] [stdout]  --> src/cline.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::fmt::format;
[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 variable: `run`
[INFO] [stdout]   --> src/cline.rs:71:13
[INFO] [stdout]    |
[INFO] [stdout] 71 |             run,
[INFO] [stdout]    |             ^^^ help: try ignoring the field: `run: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `silent`
[INFO] [stdout]   --> src/cline.rs:72:13
[INFO] [stdout]    |
[INFO] [stdout] 72 |             silent,
[INFO] [stdout]    |             ^^^^^^ help: try ignoring the field: `silent: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `term`
[INFO] [stdout]   --> src/interactive.rs:93:19
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn configurations(term: &Term) {
[INFO] [stdout]    |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_term`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `term`
[INFO] [stdout]    --> src/interactive.rs:192:19
[INFO] [stdout]     |
[INFO] [stdout] 192 | fn select_version(term: &Term) -> String {
[INFO] [stdout]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_term`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/mvers.rs:304:13
[INFO] [stdout]     |
[INFO] [stdout] 304 |         let mut binding = std::process::Command::new(self.java_home.as_str());
[INFO] [stdout]     |             ----^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_map` is never used
[INFO] [stdout]    --> src/config.rs:346:12
[INFO] [stdout]     |
[INFO] [stdout]  53 | impl Types {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 346 |     pub fn get_map(&self) -> HashMap<String, Types> {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `WORLD` and `SERVER` are never constructed
[INFO] [stdout]    --> src/mvers.rs:243:5
[INFO] [stdout]     |
[INFO] [stdout] 242 | pub enum RunType {
[INFO] [stdout]     |          ------- variants in this enum
[INFO] [stdout] 243 |     WORLD(String),
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 244 |     SERVER(String),
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `ram`, `event`, and `err_event` are never read
[INFO] [stdout]    --> src/mvers.rs:255:9
[INFO] [stdout]     |
[INFO] [stdout] 248 | pub struct Command {
[INFO] [stdout]     |            ------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 255 |     pub ram: CommandRamConfig,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 256 |     pub event: fn(String),
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout] 257 |     pub err_event: fn(String),
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `bin` and `logger` are never read
[INFO] [stdout]    --> src/mvers.rs:264:9
[INFO] [stdout]     |
[INFO] [stdout] 261 | pub struct CommandResourcesConfig {
[INFO] [stdout]     |            ---------------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 264 |     pub bin: String,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 265 |     pub logger: String,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `xmx` and `xms` are never read
[INFO] [stdout]    --> src/mvers.rs:268:9
[INFO] [stdout]     |
[INFO] [stdout] 267 | pub struct CommandRamConfig {
[INFO] [stdout]     |            ---------------- fields in this struct
[INFO] [stdout] 268 |     pub xmx: i32,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 269 |     pub xms: i32,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]    --> src/mvers.rs:360:36
[INFO] [stdout]     |
[INFO] [stdout] 360 |                 RunType::NORMAL => { "" }.parse().unwrap(),
[INFO] [stdout]     |                                    ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `run`
[INFO] [stdout]   --> src/cline.rs:71:13
[INFO] [stdout]    |
[INFO] [stdout] 71 |             run,
[INFO] [stdout]    |             ^^^ help: try ignoring the field: `run: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `silent`
[INFO] [stdout]   --> src/cline.rs:72:13
[INFO] [stdout]    |
[INFO] [stdout] 72 |             silent,
[INFO] [stdout]    |             ^^^^^^ help: try ignoring the field: `silent: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mcwr` (bin "mcwr" test) due to 1 previous error; 12 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `term`
[INFO] [stdout]   --> src/interactive.rs:93:19
[INFO] [stdout]    |
[INFO] [stdout] 93 | fn configurations(term: &Term) {
[INFO] [stdout]    |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_term`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `term`
[INFO] [stdout]    --> src/interactive.rs:192:19
[INFO] [stdout]     |
[INFO] [stdout] 192 | fn select_version(term: &Term) -> String {
[INFO] [stdout]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_term`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/mvers.rs:304:13
[INFO] [stdout]     |
[INFO] [stdout] 304 |         let mut binding = std::process::Command::new(self.java_home.as_str());
[INFO] [stdout]     |             ----^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_map` is never used
[INFO] [stdout]    --> src/config.rs:346:12
[INFO] [stdout]     |
[INFO] [stdout]  53 | impl Types {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 346 |     pub fn get_map(&self) -> HashMap<String, Types> {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `WORLD` and `SERVER` are never constructed
[INFO] [stdout]    --> src/mvers.rs:243:5
[INFO] [stdout]     |
[INFO] [stdout] 242 | pub enum RunType {
[INFO] [stdout]     |          ------- variants in this enum
[INFO] [stdout] 243 |     WORLD(String),
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 244 |     SERVER(String),
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `ram`, `event`, and `err_event` are never read
[INFO] [stdout]    --> src/mvers.rs:255:9
[INFO] [stdout]     |
[INFO] [stdout] 248 | pub struct Command {
[INFO] [stdout]     |            ------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 255 |     pub ram: CommandRamConfig,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 256 |     pub event: fn(String),
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout] 257 |     pub err_event: fn(String),
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `bin` and `logger` are never read
[INFO] [stdout]    --> src/mvers.rs:264:9
[INFO] [stdout]     |
[INFO] [stdout] 261 | pub struct CommandResourcesConfig {
[INFO] [stdout]     |            ---------------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 264 |     pub bin: String,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 265 |     pub logger: String,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `xmx` and `xms` are never read
[INFO] [stdout]    --> src/mvers.rs:268:9
[INFO] [stdout]     |
[INFO] [stdout] 267 | pub struct CommandRamConfig {
[INFO] [stdout]     |            ---------------- fields in this struct
[INFO] [stdout] 268 |     pub xmx: i32,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 269 |     pub xms: i32,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]    --> src/mvers.rs:360:36
[INFO] [stdout]     |
[INFO] [stdout] 360 |                 RunType::NORMAL => { "" }.parse().unwrap(),
[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 `mcwr` (bin "mcwr") due to 1 previous error; 12 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "75546abf0595953544e664a3d05d706a68b7bd4e9cb2703acb70906ddf310a1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75546abf0595953544e664a3d05d706a68b7bd4e9cb2703acb70906ddf310a1f", kill_on_drop: false }`
[INFO] [stdout] 75546abf0595953544e664a3d05d706a68b7bd4e9cb2703acb70906ddf310a1f
