[INFO] fetching crate pit-rust-guest 0.4.0...
[INFO] building pit-rust-guest-0.4.0 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate pit-rust-guest 0.4.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate pit-rust-guest 0.4.0
[INFO] finished tweaking crates.io crate pit-rust-guest 0.4.0
[INFO] tweaked toml for crates.io crate pit-rust-guest 0.4.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate pit-rust-guest 0.4.0 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate pit-rust-guest 0.4.0 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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 27972ed8c25de1c2d8b6cd12fe82e55f6979d759cc1a1f7c8be15392816a29c9
[INFO] running `Command { std: "docker" "start" "-a" "27972ed8c25de1c2d8b6cd12fe82e55f6979d759cc1a1f7c8be15392816a29c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "27972ed8c25de1c2d8b6cd12fe82e55f6979d759cc1a1f7c8be15392816a29c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27972ed8c25de1c2d8b6cd12fe82e55f6979d759cc1a1f7c8be15392816a29c9", kill_on_drop: false }`
[INFO] [stdout] 27972ed8c25de1c2d8b6cd12fe82e55f6979d759cc1a1f7c8be15392816a29c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5eab07916760c772e4ce396c295be35114b3fa7bcf418ad1568f1ebcc917bbb4
[INFO] running `Command { std: "docker" "start" "-a" "5eab07916760c772e4ce396c295be35114b3fa7bcf418ad1568f1ebcc917bbb4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling unicode-xid v0.2.6
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling keccak v0.1.5
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling nom v8.0.0
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling quasiquote-proc-macro v0.1.0
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling quasiquote v0.1.1
[INFO] [stderr]    Compiling sha3 v0.10.8
[INFO] [stderr]    Compiling derive_more-impl v2.0.1
[INFO] [stderr]    Compiling derive_more v2.0.1
[INFO] [stderr]    Compiling pit-core v0.4.2
[INFO] [stderr]    Compiling pit-rust-guest v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `ty`
[INFO] [stdout]   --> src/lib.rs:74:48
[INFO] [stdout]    |
[INFO] [stdout] 74 |                         if let Arg::Resource { ty, nullable, take, ann } = b{
[INFO] [stdout]    |                                                ^^ help: try ignoring the field: `ty: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nullable`
[INFO] [stdout]   --> src/lib.rs:74:52
[INFO] [stdout]    |
[INFO] [stdout] 74 |                         if let Arg::Resource { ty, nullable, take, ann } = b{
[INFO] [stdout]    |                                                    ^^^^^^^^ help: try ignoring the field: `nullable: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ann`
[INFO] [stdout]   --> src/lib.rs:74:68
[INFO] [stdout]    |
[INFO] [stdout] 74 |                         if let Arg::Resource { ty, nullable, take, ann } = b{
[INFO] [stdout]    |                                                                    ^^^ help: try ignoring the field: `ann: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ty`
[INFO] [stdout]    --> src/lib.rs:102:44
[INFO] [stdout]     |
[INFO] [stdout] 102 |                     if let Arg::Resource { ty, nullable, take, ann } = b{
[INFO] [stdout]     |                                            ^^ help: try ignoring the field: `ty: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nullable`
[INFO] [stdout]    --> src/lib.rs:102:48
[INFO] [stdout]     |
[INFO] [stdout] 102 |                     if let Arg::Resource { ty, nullable, take, ann } = b{
[INFO] [stdout]     |                                                ^^^^^^^^ help: try ignoring the field: `nullable: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ann`
[INFO] [stdout]    --> src/lib.rs:102:64
[INFO] [stdout]     |
[INFO] [stdout] 102 |                     if let Arg::Resource { ty, nullable, take, ann } = b{
[INFO] [stdout]     |                                                                ^^^ help: try ignoring the field: `ann: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:70:29
[INFO] [stdout]    |
[INFO] [stdout] 70 |                         let mut c = format_ident!("p{a}");
[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/lib.rs:98:25
[INFO] [stdout]    |
[INFO] [stdout] 98 |                     let mut c = format_ident!("p{a}");
[INFO] [stdout]    |                         ----^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ann`
[INFO] [stdout]    --> src/lib.rs:231:13
[INFO] [stdout]     |
[INFO] [stdout] 231 |             ann,
[INFO] [stdout]     |             ^^^ help: try ignoring the field: `ann: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     write!(ha, "~{}", id);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let _ = write!(ha, "~{}", id);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     ha.write(&opts.salt);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let _ = ha.write(&opts.salt);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.90s
[INFO] running `Command { std: "docker" "inspect" "5eab07916760c772e4ce396c295be35114b3fa7bcf418ad1568f1ebcc917bbb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5eab07916760c772e4ce396c295be35114b3fa7bcf418ad1568f1ebcc917bbb4", kill_on_drop: false }`
[INFO] [stdout] 5eab07916760c772e4ce396c295be35114b3fa7bcf418ad1568f1ebcc917bbb4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3d5c36332885555fa5405b311ec00af0cc0b2fe828e9877984082dfbcff3ccea
[INFO] running `Command { std: "docker" "start" "-a" "3d5c36332885555fa5405b311ec00af0cc0b2fe828e9877984082dfbcff3ccea", kill_on_drop: false }`
[INFO] [stderr]    Compiling pit-rust-guest v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `ty`
[INFO] [stdout]   --> src/lib.rs:74:48
[INFO] [stdout]    |
[INFO] [stdout] 74 |                         if let Arg::Resource { ty, nullable, take, ann } = b{
[INFO] [stdout]    |                                                ^^ help: try ignoring the field: `ty: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nullable`
[INFO] [stdout]   --> src/lib.rs:74:52
[INFO] [stdout]    |
[INFO] [stdout] 74 |                         if let Arg::Resource { ty, nullable, take, ann } = b{
[INFO] [stdout]    |                                                    ^^^^^^^^ help: try ignoring the field: `nullable: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ann`
[INFO] [stdout]   --> src/lib.rs:74:68
[INFO] [stdout]    |
[INFO] [stdout] 74 |                         if let Arg::Resource { ty, nullable, take, ann } = b{
[INFO] [stdout]    |                                                                    ^^^ help: try ignoring the field: `ann: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ty`
[INFO] [stdout]    --> src/lib.rs:102:44
[INFO] [stdout]     |
[INFO] [stdout] 102 |                     if let Arg::Resource { ty, nullable, take, ann } = b{
[INFO] [stdout]     |                                            ^^ help: try ignoring the field: `ty: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nullable`
[INFO] [stdout]    --> src/lib.rs:102:48
[INFO] [stdout]     |
[INFO] [stdout] 102 |                     if let Arg::Resource { ty, nullable, take, ann } = b{
[INFO] [stdout]     |                                                ^^^^^^^^ help: try ignoring the field: `nullable: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ann`
[INFO] [stdout]    --> src/lib.rs:102:64
[INFO] [stdout]     |
[INFO] [stdout] 102 |                     if let Arg::Resource { ty, nullable, take, ann } = b{
[INFO] [stdout]     |                                                                ^^^ help: try ignoring the field: `ann: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:70:29
[INFO] [stdout]    |
[INFO] [stdout] 70 |                         let mut c = format_ident!("p{a}");
[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/lib.rs:98:25
[INFO] [stdout]    |
[INFO] [stdout] 98 |                     let mut c = format_ident!("p{a}");
[INFO] [stdout]    |                         ----^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ann`
[INFO] [stdout]    --> src/lib.rs:231:13
[INFO] [stdout]     |
[INFO] [stdout] 231 |             ann,
[INFO] [stdout]     |             ^^^ help: try ignoring the field: `ann: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     write!(ha, "~{}", id);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let _ = write!(ha, "~{}", id);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     ha.write(&opts.salt);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let _ = ha.write(&opts.salt);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ty`
[INFO] [stdout]   --> src/lib.rs:74:48
[INFO] [stdout]    |
[INFO] [stdout] 74 |                         if let Arg::Resource { ty, nullable, take, ann } = b{
[INFO] [stdout]    |                                                ^^ help: try ignoring the field: `ty: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nullable`
[INFO] [stdout]   --> src/lib.rs:74:52
[INFO] [stdout]    |
[INFO] [stdout] 74 |                         if let Arg::Resource { ty, nullable, take, ann } = b{
[INFO] [stdout]    |                                                    ^^^^^^^^ help: try ignoring the field: `nullable: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ann`
[INFO] [stdout]   --> src/lib.rs:74:68
[INFO] [stdout]    |
[INFO] [stdout] 74 |                         if let Arg::Resource { ty, nullable, take, ann } = b{
[INFO] [stdout]    |                                                                    ^^^ help: try ignoring the field: `ann: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ty`
[INFO] [stdout]    --> src/lib.rs:102:44
[INFO] [stdout]     |
[INFO] [stdout] 102 |                     if let Arg::Resource { ty, nullable, take, ann } = b{
[INFO] [stdout]     |                                            ^^ help: try ignoring the field: `ty: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nullable`
[INFO] [stdout]    --> src/lib.rs:102:48
[INFO] [stdout]     |
[INFO] [stdout] 102 |                     if let Arg::Resource { ty, nullable, take, ann } = b{
[INFO] [stdout]     |                                                ^^^^^^^^ help: try ignoring the field: `nullable: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ann`
[INFO] [stdout]    --> src/lib.rs:102:64
[INFO] [stdout]     |
[INFO] [stdout] 102 |                     if let Arg::Resource { ty, nullable, take, ann } = b{
[INFO] [stdout]     |                                                                ^^^ help: try ignoring the field: `ann: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:70:29
[INFO] [stdout]    |
[INFO] [stdout] 70 |                         let mut c = format_ident!("p{a}");
[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/lib.rs:98:25
[INFO] [stdout]    |
[INFO] [stdout] 98 |                     let mut c = format_ident!("p{a}");
[INFO] [stdout]    |                         ----^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ann`
[INFO] [stdout]    --> src/lib.rs:231:13
[INFO] [stdout]     |
[INFO] [stdout] 231 |             ann,
[INFO] [stdout]     |             ^^^ help: try ignoring the field: `ann: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     write!(ha, "~{}", id);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let _ = write!(ha, "~{}", id);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     ha.write(&opts.salt);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let _ = ha.write(&opts.salt);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "3d5c36332885555fa5405b311ec00af0cc0b2fe828e9877984082dfbcff3ccea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d5c36332885555fa5405b311ec00af0cc0b2fe828e9877984082dfbcff3ccea", kill_on_drop: false }`
[INFO] [stdout] 3d5c36332885555fa5405b311ec00af0cc0b2fe828e9877984082dfbcff3ccea
