[INFO] fetching crate tjh-mqtt 0.2.1...
[INFO] checking tjh-mqtt-0.2.1 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate tjh-mqtt 0.2.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate tjh-mqtt 0.2.1
[INFO] finished tweaking crates.io crate tjh-mqtt 0.2.1
[INFO] tweaked toml for crates.io crate tjh-mqtt 0.2.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tjh-mqtt 0.2.1 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 52 packages to latest compatible versions
[INFO] [stderr]       Adding tokio-rustls v0.24.1 (available: v0.26.2)
[INFO] [stderr]       Adding webpki-roots v0.25.4 (available: v1.0.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c3168998d0b5711541e04713d6d01863c6e9fa536a5ec727eaba740118c2888e
[INFO] running `Command { std: "docker" "start" "-a" "c3168998d0b5711541e04713d6d01863c6e9fa536a5ec727eaba740118c2888e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c3168998d0b5711541e04713d6d01863c6e9fa536a5ec727eaba740118c2888e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3168998d0b5711541e04713d6d01863c6e9fa536a5ec727eaba740118c2888e", kill_on_drop: false }`
[INFO] [stdout] c3168998d0b5711541e04713d6d01863c6e9fa536a5ec727eaba740118c2888e
[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" "-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9009ff6779b7a3be303f3cce95e62ef5dd133597808c3993bb9a5fea1808c9b8
[INFO] running `Command { std: "docker" "start" "-a" "9009ff6779b7a3be303f3cce95e62ef5dd133597808c3993bb9a5fea1808c9b8", kill_on_drop: false }`
[INFO] [stderr]     Checking tjh-mqtt v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `WrappingNonZeroU16` is never constructed
[INFO] [stdout]   --> src/misc.rs:76:19
[INFO] [stdout]    |
[INFO] [stdout] 76 | pub(crate) struct WrappingNonZeroU16(NonZeroU16);
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `MAX` and `get` are never used
[INFO] [stdout]   --> src/misc.rs:95:12
[INFO] [stdout]    |
[INFO] [stdout] 93 | impl WrappingNonZeroU16 {
[INFO] [stdout]    | ----------------------- associated items in this implementation
[INFO] [stdout] 94 |     // pub const MIN: Self = Self(NonZeroU16::MIN);
[INFO] [stdout] 95 |     pub const MAX: Self = Self(NonZeroU16::MAX);
[INFO] [stdout]    |               ^^^
[INFO] [stdout] ...
[INFO] [stdout] 98 |     pub fn get(&self) -> NonZeroU16 {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/topic.rs:82:25
[INFO] [stdout]    |
[INFO] [stdout] 82 |     pub fn from_static(s: &'static str) -> &Self {
[INFO] [stdout]    |                            ^^^^^^^         ----- the lifetime gets resolved as `'static`
[INFO] [stdout]    |                            |
[INFO] [stdout]    |                            this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to consistently use `'static`
[INFO] [stdout]    |
[INFO] [stdout] 82 |     pub fn from_static(s: &'static str) -> &'static Self {
[INFO] [stdout]    |                                             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WrappingNonZeroU16` is never constructed
[INFO] [stdout]   --> src/misc.rs:76:19
[INFO] [stdout]    |
[INFO] [stdout] 76 | pub(crate) struct WrappingNonZeroU16(NonZeroU16);
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `MAX` and `get` are never used
[INFO] [stdout]   --> src/misc.rs:95:12
[INFO] [stdout]    |
[INFO] [stdout] 93 | impl WrappingNonZeroU16 {
[INFO] [stdout]    | ----------------------- associated items in this implementation
[INFO] [stdout] 94 |     // pub const MIN: Self = Self(NonZeroU16::MIN);
[INFO] [stdout] 95 |     pub const MAX: Self = Self(NonZeroU16::MAX);
[INFO] [stdout]    |               ^^^
[INFO] [stdout] ...
[INFO] [stdout] 98 |     pub fn get(&self) -> NonZeroU16 {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/topic.rs:82:25
[INFO] [stdout]    |
[INFO] [stdout] 82 |     pub fn from_static(s: &'static str) -> &Self {
[INFO] [stdout]    |                            ^^^^^^^         ----- the lifetime gets resolved as `'static`
[INFO] [stdout]    |                            |
[INFO] [stdout]    |                            this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to consistently use `'static`
[INFO] [stdout]    |
[INFO] [stdout] 82 |     pub fn from_static(s: &'static str) -> &'static Self {
[INFO] [stdout]    |                                             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "9009ff6779b7a3be303f3cce95e62ef5dd133597808c3993bb9a5fea1808c9b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9009ff6779b7a3be303f3cce95e62ef5dd133597808c3993bb9a5fea1808c9b8", kill_on_drop: false }`
[INFO] [stdout] 9009ff6779b7a3be303f3cce95e62ef5dd133597808c3993bb9a5fea1808c9b8