[INFO] cloning repository https://github.com/mickjohn/friendly_file_server_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mickjohn/friendly_file_server_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmickjohn%2Ffriendly_file_server_rust", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8f2b9b3e6bf11c6566a433c3a987ab7537d1a7a1
[INFO] checking mickjohn/friendly_file_server_rust against master#029c9e18dd1f4668e1d42bb187c1c263dfe20093 for pr-157562
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmickjohn%2Ffriendly_file_server_rust" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
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[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mickjohn/friendly_file_server_rust
[INFO] finished tweaking git repo https://github.com/mickjohn/friendly_file_server_rust
[INFO] tweaked toml for git repo https://github.com/mickjohn/friendly_file_server_rust written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mickjohn/friendly_file_server_rust on toolchain 029c9e18dd1f4668e1d42bb187c1c263dfe20093
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+029c9e18dd1f4668e1d42bb187c1c263dfe20093" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mickjohn/friendly_file_server_rust 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" "+029c9e18dd1f4668e1d42bb187c1c263dfe20093" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `UserRole`
[INFO] [stdout]   --> src/webserver/filters.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     UserRole,
[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: `UserRole`
[INFO] [stdout]   --> src/webserver/filters.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     UserRole,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/webserver/websocket.rs:148:33
[INFO] [stdout]     |
[INFO] [stdout] 148 |                     if let Some(mut user) = room.users_by_id.get_mut(&my_id) {
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/webserver/websocket.rs:148:33
[INFO] [stdout]     |
[INFO] [stdout] 148 |                     if let Some(mut user) = room.users_by_id.get_mut(&my_id) {
[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 `db_url` is never read
[INFO] [stdout]   --> src/args.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct Config {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 21 |     pub db_url: 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 `db_url` is never read
[INFO] [stdout]   --> src/args.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 27 | struct JsonConfig {
[INFO] [stdout]    |        ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub db_url: Option<String>,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `JsonConfig` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `db_url` is never read
[INFO] [stdout]   --> src/args.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct CliConfig {
[INFO] [stdout]    |        --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 54 |     pub db_url: Option<String>,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CliConfig` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> src/webserver/models.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub struct Room {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 64 |     pub id: String,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NotADirectory` is never constructed
[INFO] [stdout]  --> src/webserver/rejections.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct NotADirectory;
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NotAFile` is never constructed
[INFO] [stdout]   --> src/webserver/rejections.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct NotAFile;
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `db_url` is never read
[INFO] [stdout]   --> src/args.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct Config {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 21 |     pub db_url: 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 `db_url` is never read
[INFO] [stdout]   --> src/args.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 27 | struct JsonConfig {
[INFO] [stdout]    |        ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub db_url: Option<String>,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `JsonConfig` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `db_url` is never read
[INFO] [stdout]   --> src/args.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct CliConfig {
[INFO] [stdout]    |        --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 54 |     pub db_url: Option<String>,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CliConfig` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> src/webserver/models.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub struct Room {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 64 |     pub id: String,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NotADirectory` is never constructed
[INFO] [stdout]  --> src/webserver/rejections.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct NotADirectory;
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NotAFile` is never constructed
[INFO] [stdout]   --> src/webserver/rejections.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct NotAFile;
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 37.32s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: buf_redux v0.8.4, multipart v0.17.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 4`
[INFO] running `Command { std: "docker" "inspect" "2c7de18b36ffc1ed3e39847087a7ee9a76a13b32370eae399c83ba832b02bea9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c7de18b36ffc1ed3e39847087a7ee9a76a13b32370eae399c83ba832b02bea9", kill_on_drop: false }`
[INFO] [stdout] 2c7de18b36ffc1ed3e39847087a7ee9a76a13b32370eae399c83ba832b02bea9
