[INFO] cloning repository https://github.com/deane0/crabcan
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/deane0/crabcan" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdeane0%2Fcrabcan", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdeane0%2Fcrabcan'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dfb8f8e0eb41167f4dac55a059489b28c2cd28a7
[INFO] checking deane0/crabcan against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdeane0%2Fcrabcan" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/deane0/crabcan
[INFO] finished tweaking git repo https://github.com/deane0/crabcan
[INFO] tweaked toml for git repo https://github.com/deane0/crabcan written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/deane0/crabcan 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 git repo https://github.com/deane0/crabcan 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 61b1f7036d6f1f531cb40f860ae48873daa7796055f0d4d97bee2e43f5c05105
[INFO] running `Command { std: "docker" "start" "-a" "61b1f7036d6f1f531cb40f860ae48873daa7796055f0d4d97bee2e43f5c05105", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "61b1f7036d6f1f531cb40f860ae48873daa7796055f0d4d97bee2e43f5c05105", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61b1f7036d6f1f531cb40f860ae48873daa7796055f0d4d97bee2e43f5c05105", kill_on_drop: false }`
[INFO] [stdout] 61b1f7036d6f1f531cb40f860ae48873daa7796055f0d4d97bee2e43f5c05105
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] e45bfabe33b777f3eaee66f828821ac79129334c4daad07adbffa3037f573850
[INFO] running `Command { std: "docker" "start" "-a" "e45bfabe33b777f3eaee66f828821ac79129334c4daad07adbffa3037f573850", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking once_cell v1.14.0
[INFO] [stderr]    Compiling clap_derive v3.2.18
[INFO] [stderr]     Checking aho-corasick v0.7.19
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking nix v0.25.0
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking clap v3.2.20
[INFO] [stderr]     Checking scan_fmt v0.2.6
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]     Checking crabcan v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `path`, `argv`, `uid`, and `mount_dir` are never read
[INFO] [stdout]   --> src/config.rs:7:9
[INFO] [stdout]    |
[INFO] [stdout]  6 | pub struct ContainerOpts {
[INFO] [stdout]    |            ------------- fields in this struct
[INFO] [stdout]  7 |     pub path: CString,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]  8 |     pub argv: Vec<CString>,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]  9 |
[INFO] [stdout] 10 |     pub uid: u32,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 11 |     pub mount_dir: PathBuf,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ContainerOpts` has a derived impl for the trait `Clone`, but this is 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 `config` is never read
[INFO] [stdout]  --> src/container.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Container {
[INFO] [stdout]   |            --------- field in this struct
[INFO] [stdout] 7 |     config: ContainerOpts,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/errors.rs:9:18
[INFO] [stdout]   |
[INFO] [stdout] 9 |     NotSupported(u8),
[INFO] [stdout]   |     ------------ ^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `ErrorCode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 9 -     NotSupported(u8),
[INFO] [stdout] 9 +     NotSupported(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/errors.rs:11:20
[INFO] [stdout]    |
[INFO] [stdout] 11 |     ContainerError(u8),
[INFO] [stdout]    |     -------------- ^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ErrorCode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 11 -     ContainerError(u8),
[INFO] [stdout] 11 +     ContainerError(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `path`, `argv`, `uid`, and `mount_dir` are never read
[INFO] [stdout]   --> src/config.rs:7:9
[INFO] [stdout]    |
[INFO] [stdout]  6 | pub struct ContainerOpts {
[INFO] [stdout]    |            ------------- fields in this struct
[INFO] [stdout]  7 |     pub path: CString,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]  8 |     pub argv: Vec<CString>,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]  9 |
[INFO] [stdout] 10 |     pub uid: u32,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 11 |     pub mount_dir: PathBuf,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ContainerOpts` has a derived impl for the trait `Clone`, but this is 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] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/cli.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub command: 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] warning: field `config` is never read
[INFO] [stdout]  --> src/container.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Container {
[INFO] [stdout]   |            --------- field in this struct
[INFO] [stdout] 7 |     config: ContainerOpts,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/errors.rs:9:18
[INFO] [stdout]   |
[INFO] [stdout] 9 |     NotSupported(u8),
[INFO] [stdout]   |     ------------ ^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `ErrorCode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 9 -     NotSupported(u8),
[INFO] [stdout] 9 +     NotSupported(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/errors.rs:11:20
[INFO] [stdout]    |
[INFO] [stdout] 11 |     ContainerError(u8),
[INFO] [stdout]    |     -------------- ^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ErrorCode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 11 -     ContainerError(u8),
[INFO] [stdout] 11 +     ContainerError(()),
[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/cli.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub command: 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 `crabcan` (bin "crabcan" test) due to 1 previous error; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `crabcan` (bin "crabcan") due to 1 previous error; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "e45bfabe33b777f3eaee66f828821ac79129334c4daad07adbffa3037f573850", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e45bfabe33b777f3eaee66f828821ac79129334c4daad07adbffa3037f573850", kill_on_drop: false }`
[INFO] [stdout] e45bfabe33b777f3eaee66f828821ac79129334c4daad07adbffa3037f573850
