[INFO] fetching crate namespaces-rs 0.1.1...
[INFO] testing namespaces-rs-0.1.1 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-8
[INFO] extracting crate namespaces-rs 0.1.1 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate namespaces-rs 0.1.1
[INFO] finished tweaking crates.io crate namespaces-rs 0.1.1
[INFO] tweaked toml for crates.io crate namespaces-rs 0.1.1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate namespaces-rs 0.1.1 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 72 packages to latest compatible versions
[INFO] [stderr]       Adding ipc-channel v0.14.1 (available: v0.20.2)
[INFO] [stderr]       Adding nix v0.18.0 (available: v0.30.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] caf79a64e287b3eec707d3a082ca815dd31298488d7aabddd0a10be45977a067
[INFO] running `Command { std: "docker" "start" "-a" "caf79a64e287b3eec707d3a082ca815dd31298488d7aabddd0a10be45977a067", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "caf79a64e287b3eec707d3a082ca815dd31298488d7aabddd0a10be45977a067", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "caf79a64e287b3eec707d3a082ca815dd31298488d7aabddd0a10be45977a067", kill_on_drop: false }`
[INFO] [stdout] caf79a64e287b3eec707d3a082ca815dd31298488d7aabddd0a10be45977a067
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c2ea5d8421cc2f9708e87e2abc4d634705974d2c435f40c7b4b9b82af417d38b
[INFO] running `Command { std: "docker" "start" "-a" "c2ea5d8421cc2f9708e87e2abc4d634705974d2c435f40c7b4b9b82af417d38b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]    Compiling crossbeam-channel v0.4.4
[INFO] [stderr]    Compiling regex-automata v0.4.13
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling net2 v0.2.39
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling tempfile v3.23.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling ipc-channel v0.14.1
[INFO] [stderr]    Compiling regex v1.12.2
[INFO] [stderr]    Compiling namespaces-rs v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `child`
[INFO] [stdout]   --> src/advanced.rs:15:41
[INFO] [stdout]    |
[INFO] [stdout] 15 |         Ok(unistd::ForkResult::Parent { child, .. }) => {
[INFO] [stdout]    |                                         ^^^^^ help: try ignoring the field: `child: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `child`
[INFO] [stdout]   --> src/advanced.rs:43:41
[INFO] [stdout]    |
[INFO] [stdout] 43 |         Ok(unistd::ForkResult::Parent { child, .. }) => {
[INFO] [stdout]    |                                         ^^^^^ help: try ignoring the field: `child: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `genre` is never read
[INFO] [stdout]   --> src/basic.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Namespace {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 16 |     genre: NsType,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Namespace` 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: unused `Result` that must be used
[INFO] [stdout]   --> src/advanced.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |             tx.send(f());
[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] 26 |             let _ = tx.send(f());
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/advanced.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |             tx.send(res);
[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] 69 |             let _ = tx.send(res);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.74s
[INFO] running `Command { std: "docker" "inspect" "c2ea5d8421cc2f9708e87e2abc4d634705974d2c435f40c7b4b9b82af417d38b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2ea5d8421cc2f9708e87e2abc4d634705974d2c435f40c7b4b9b82af417d38b", kill_on_drop: false }`
[INFO] [stdout] c2ea5d8421cc2f9708e87e2abc4d634705974d2c435f40c7b4b9b82af417d38b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9927749fbad3c0fbb439c1fc137eca7cc6ecb95a67a8f1d46e6c6470b391424
[INFO] running `Command { std: "docker" "start" "-a" "e9927749fbad3c0fbb439c1fc137eca7cc6ecb95a67a8f1d46e6c6470b391424", kill_on_drop: false }`
[INFO] [stderr]    Compiling namespaces-rs v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `child`
[INFO] [stdout]   --> src/advanced.rs:15:41
[INFO] [stdout]    |
[INFO] [stdout] 15 |         Ok(unistd::ForkResult::Parent { child, .. }) => {
[INFO] [stdout]    |                                         ^^^^^ help: try ignoring the field: `child: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `child`
[INFO] [stdout]   --> src/advanced.rs:43:41
[INFO] [stdout]    |
[INFO] [stdout] 43 |         Ok(unistd::ForkResult::Parent { child, .. }) => {
[INFO] [stdout]    |                                         ^^^^^ help: try ignoring the field: `child: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `genre` is never read
[INFO] [stdout]   --> src/basic.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Namespace {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 16 |     genre: NsType,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Namespace` 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: unused `Result` that must be used
[INFO] [stdout]   --> src/advanced.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |             tx.send(f());
[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] 26 |             let _ = tx.send(f());
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/advanced.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |             tx.send(res);
[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] 69 |             let _ = tx.send(res);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `child`
[INFO] [stdout]   --> src/advanced.rs:15:41
[INFO] [stdout]    |
[INFO] [stdout] 15 |         Ok(unistd::ForkResult::Parent { child, .. }) => {
[INFO] [stdout]    |                                         ^^^^^ help: try ignoring the field: `child: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `child`
[INFO] [stdout]   --> src/advanced.rs:43:41
[INFO] [stdout]    |
[INFO] [stdout] 43 |         Ok(unistd::ForkResult::Parent { child, .. }) => {
[INFO] [stdout]    |                                         ^^^^^ help: try ignoring the field: `child: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `genre` is never read
[INFO] [stdout]   --> src/basic.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Namespace {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 16 |     genre: NsType,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Namespace` 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: unused `Result` that must be used
[INFO] [stdout]   --> src/advanced.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |             tx.send(f());
[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] 26 |             let _ = tx.send(f());
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/advanced.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |             tx.send(res);
[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] 69 |             let _ = tx.send(res);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.01s
[INFO] running `Command { std: "docker" "inspect" "e9927749fbad3c0fbb439c1fc137eca7cc6ecb95a67a8f1d46e6c6470b391424", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9927749fbad3c0fbb439c1fc137eca7cc6ecb95a67a8f1d46e6c6470b391424", kill_on_drop: false }`
[INFO] [stdout] e9927749fbad3c0fbb439c1fc137eca7cc6ecb95a67a8f1d46e6c6470b391424
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 98a20f6a4e69417fbe7e26d69fc8b31bb9f493cc4a03119136cea47b8ac1398b
[INFO] running `Command { std: "docker" "start" "-a" "98a20f6a4e69417fbe7e26d69fc8b31bb9f493cc4a03119136cea47b8ac1398b", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `child`
[INFO] [stderr]   --> src/advanced.rs:15:41
[INFO] [stderr]    |
[INFO] [stderr] 15 |         Ok(unistd::ForkResult::Parent { child, .. }) => {
[INFO] [stderr]    |                                         ^^^^^ help: try ignoring the field: `child: _`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `child`
[INFO] [stderr]   --> src/advanced.rs:43:41
[INFO] [stderr]    |
[INFO] [stderr] 43 |         Ok(unistd::ForkResult::Parent { child, .. }) => {
[INFO] [stderr]    |                                         ^^^^^ help: try ignoring the field: `child: _`
[INFO] [stderr] 
[INFO] [stderr] warning: field `genre` is never read
[INFO] [stderr]   --> src/basic.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub struct Namespace {
[INFO] [stderr]    |            --------- field in this struct
[INFO] [stderr] 16 |     genre: NsType,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Namespace` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/advanced.rs:26:13
[INFO] [stderr]    |
[INFO] [stderr] 26 |             tx.send(f());
[INFO] [stderr]    |             ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 26 |             let _ = tx.send(f());
[INFO] [stderr]    |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/advanced.rs:69:13
[INFO] [stderr]    |
[INFO] [stderr] 69 |             tx.send(res);
[INFO] [stderr]    |             ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 69 |             let _ = tx.send(res);
[INFO] [stderr]    |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `namespaces-rs` (lib) generated 5 warnings (run `cargo fix --lib -p namespaces-rs` to apply 2 suggestions)
[INFO] [stderr] warning: `namespaces-rs` (lib test) generated 5 warnings (5 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/namespaces-1f19487cd407687b)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test basic::tests::get_namespaces_test ... ok
[INFO] [stdout] test basic::tests::get_specific_namespaces_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests namespaces
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "98a20f6a4e69417fbe7e26d69fc8b31bb9f493cc4a03119136cea47b8ac1398b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98a20f6a4e69417fbe7e26d69fc8b31bb9f493cc4a03119136cea47b8ac1398b", kill_on_drop: false }`
[INFO] [stdout] 98a20f6a4e69417fbe7e26d69fc8b31bb9f493cc4a03119136cea47b8ac1398b