[INFO] fetching crate mclr 3.1.4...
[INFO] checking mclr-3.1.4 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate mclr 3.1.4 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate mclr 3.1.4
[INFO] finished tweaking crates.io crate mclr 3.1.4
[INFO] tweaked toml for crates.io crate mclr 3.1.4 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mclr 3.1.4 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 mclr 3.1.4 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-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] 95e7347f6b2b296c29cf0cfeb7f2122599df930d2ddddd85eea38b9f07b33d54
[INFO] running `Command { std: "docker" "start" "-a" "95e7347f6b2b296c29cf0cfeb7f2122599df930d2ddddd85eea38b9f07b33d54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "95e7347f6b2b296c29cf0cfeb7f2122599df930d2ddddd85eea38b9f07b33d54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95e7347f6b2b296c29cf0cfeb7f2122599df930d2ddddd85eea38b9f07b33d54", kill_on_drop: false }`
[INFO] [stdout] 95e7347f6b2b296c29cf0cfeb7f2122599df930d2ddddd85eea38b9f07b33d54
[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] 2410a33934390bce9b0823b14a04effbe07a65c0f6a7570708a77a38d5e0561e
[INFO] running `Command { std: "docker" "start" "-a" "2410a33934390bce9b0823b14a04effbe07a65c0f6a7570708a77a38d5e0561e", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]  --> src/mc/utils/assets_utils.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::sync::Arc;
[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: `std::sync::Arc`
[INFO] [stdout]  --> src/mc/utils/assets_utils.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::sync::Arc;
[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 imports: `fs` and `path::Path`
[INFO] [stdout]  --> src/lib.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 |     use std::{fs, path::Path};
[INFO] [stdout]   |               ^^  ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] help: if this is a test module, consider adding a `#[cfg(test)]` to the containing module
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | mod tests {
[INFO] [stdout]   | ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `CommandAssetsConfig`, `CommandRamConfig`, `CommandResourcesConfig`, `CommandUserConfig`, `HandleEvent`, `RunType`, `get_compatible_java`, `manifest::manifest`, and `self`
[INFO] [stdout]   --> src/lib.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |             self, get_compatible_java,
[INFO] [stdout]    |             ^^^^  ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 11 |             utils::command_builder::{
[INFO] [stdout] 12 |                 CommandAssetsConfig, CommandRamConfig, CommandResourcesConfig, CommandUserConfig,
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 13 |                 RunType,
[INFO] [stdout]    |                 ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |         utils::{HandleEvent, manifest::manifest},
[INFO] [stdout]    |                 ^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: if this is a test module, consider adding a `#[cfg(test)]` to the containing module
[INFO] [stdout]   --> src/lib.rs:5:1
[INFO] [stdout]    |
[INFO] [stdout]  5 | mod tests {
[INFO] [stdout]    | ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/mc/utils/assets_utils.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let mut downloader = Downloader::new();
[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: field `path` is never read
[INFO] [stdout]   --> src/deserialize/json_version.rs:84:16
[INFO] [stdout]    |
[INFO] [stdout] 83 | pub struct LibraryDownloadsArtifacts {
[INFO] [stdout]    |            ------------------------- field in this struct
[INFO] [stdout] 84 |     pub(crate) path: String,
[INFO] [stdout]    |                ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `LibraryDownloadsArtifacts` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `version` is never read
[INFO] [stdout]   --> src/deserialize/json_version.rs:94:5
[INFO] [stdout]    |
[INFO] [stdout] 91 | pub struct LibraryRuleOs {
[INFO] [stdout]    |            ------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 94 |     version: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `LibraryRuleOs` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `md5`, `sha1`, `sha256`, `sha521`, `size`, and `extract` are never read
[INFO] [stdout]    --> src/deserialize/json_version.rs:126:5
[INFO] [stdout]     |
[INFO] [stdout] 118 | pub struct Library {
[INFO] [stdout]     |            ------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 126 |     md5: String,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 127 |     #[serde(default)]
[INFO] [stdout] 128 |     sha1: String,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 129 |     #[serde(default)]
[INFO] [stdout] 130 |     sha256: String,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 131 |     #[serde(default)]
[INFO] [stdout] 132 |     sha521: String,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 133 |     #[serde(default)]
[INFO] [stdout] 134 |     size: usize,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 135 |     pub(crate) extract: Option<LibraryExtract>,
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Library` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `exclude` is never read
[INFO] [stdout]    --> src/deserialize/json_version.rs:139:5
[INFO] [stdout]     |
[INFO] [stdout] 138 | pub struct LibraryExtract {
[INFO] [stdout]     |            -------------- field in this struct
[INFO] [stdout] 139 |     exclude: Vec<String>,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `LibraryExtract` has derived impls for the traits `Clone` and `Debug`, but these are 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/mc/utils/command_builder.rs:116:36
[INFO] [stdout]     |
[INFO] [stdout] 116 |                 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: variable does not need to be mutable
[INFO] [stdout]   --> src/mc/utils/assets_utils.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let mut downloader = Downloader::new();
[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: field `path` is never read
[INFO] [stdout]   --> src/deserialize/json_version.rs:84:16
[INFO] [stdout]    |
[INFO] [stdout] 83 | pub struct LibraryDownloadsArtifacts {
[INFO] [stdout]    |            ------------------------- field in this struct
[INFO] [stdout] 84 |     pub(crate) path: String,
[INFO] [stdout]    |                ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `LibraryDownloadsArtifacts` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `version` is never read
[INFO] [stdout]   --> src/deserialize/json_version.rs:94:5
[INFO] [stdout]    |
[INFO] [stdout] 91 | pub struct LibraryRuleOs {
[INFO] [stdout]    |            ------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 94 |     version: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `LibraryRuleOs` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `md5`, `sha1`, `sha256`, `sha521`, `size`, and `extract` are never read
[INFO] [stdout]    --> src/deserialize/json_version.rs:126:5
[INFO] [stdout]     |
[INFO] [stdout] 118 | pub struct Library {
[INFO] [stdout]     |            ------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 126 |     md5: String,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 127 |     #[serde(default)]
[INFO] [stdout] 128 |     sha1: String,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 129 |     #[serde(default)]
[INFO] [stdout] 130 |     sha256: String,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 131 |     #[serde(default)]
[INFO] [stdout] 132 |     sha521: String,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 133 |     #[serde(default)]
[INFO] [stdout] 134 |     size: usize,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 135 |     pub(crate) extract: Option<LibraryExtract>,
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Library` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `exclude` is never read
[INFO] [stdout]    --> src/deserialize/json_version.rs:139:5
[INFO] [stdout]     |
[INFO] [stdout] 138 | pub struct LibraryExtract {
[INFO] [stdout]     |            -------------- field in this struct
[INFO] [stdout] 139 |     exclude: Vec<String>,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `LibraryExtract` has derived impls for the traits `Clone` and `Debug`, but these are 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/mc/utils/command_builder.rs:116:36
[INFO] [stdout]     |
[INFO] [stdout] 116 |                 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 `mclr` (lib test) due to 1 previous error; 6 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `mclr` (lib) due to 1 previous error; 8 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "2410a33934390bce9b0823b14a04effbe07a65c0f6a7570708a77a38d5e0561e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2410a33934390bce9b0823b14a04effbe07a65c0f6a7570708a77a38d5e0561e", kill_on_drop: false }`
[INFO] [stdout] 2410a33934390bce9b0823b14a04effbe07a65c0f6a7570708a77a38d5e0561e
