[INFO] fetching crate astro-dnssd 0.3.2...
[INFO] checking astro-dnssd-0.3.2 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate astro-dnssd 0.3.2 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate astro-dnssd 0.3.2 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate astro-dnssd 0.3.2
[INFO] finished tweaking crates.io crate astro-dnssd 0.3.2
[INFO] tweaked toml for crates.io crate astro-dnssd 0.3.2 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate astro-dnssd 0.3.2 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unicode-ident v1.0.4
[INFO] [stderr]   Downloaded thiserror-impl v1.0.35
[INFO] [stderr]   Downloaded thiserror v1.0.35
[INFO] [stderr]   Downloaded quote v1.0.21
[INFO] [stderr]   Downloaded aho-corasick v0.7.19
[INFO] [stderr]   Downloaded regex-syntax v0.6.27
[INFO] [stderr]   Downloaded memchr v2.5.0
[INFO] [stderr]   Downloaded libc v0.2.132
[INFO] [stderr]   Downloaded regex v1.6.0
[INFO] [stderr]   Downloaded env_logger v0.9.1
[INFO] [stderr]   Downloaded proc-macro2 v1.0.43
[INFO] [stderr]   Downloaded syn v1.0.99
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f2462dc64773eea9e8e43681835c120b8c9a7aa4dd64d18b8727fb8e33f0e5f1
[INFO] running `Command { std: "docker" "start" "-a" "f2462dc64773eea9e8e43681835c120b8c9a7aa4dd64d18b8727fb8e33f0e5f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2462dc64773eea9e8e43681835c120b8c9a7aa4dd64d18b8727fb8e33f0e5f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2462dc64773eea9e8e43681835c120b8c9a7aa4dd64d18b8727fb8e33f0e5f1", kill_on_drop: false }`
[INFO] [stdout] f2462dc64773eea9e8e43681835c120b8c9a7aa4dd64d18b8727fb8e33f0e5f1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c465f1d3983e3ad0043c03d9b7ff6286143b1e3f9e259f4803e56a4c6b5d7526
[INFO] running `Command { std: "docker" "start" "-a" "c465f1d3983e3ad0043c03d9b7ff6286143b1e3f9e259f4803e56a4c6b5d7526", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling unicode-ident v1.0.4
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling thiserror v1.0.35
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]    Compiling astro-dnssd v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking aho-corasick v0.7.19
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking env_logger v0.9.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.35
[INFO] [stdout] warning: trait `ServiceBrowserTrait` is never used
[INFO] [stdout]  --> src/browse.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub trait ServiceBrowserTrait {
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `full_name` is never read
[INFO] [stdout]    --> src/os/apple/browse.rs:356:9
[INFO] [stdout]     |
[INFO] [stdout] 354 | pub struct ResolvedService {
[INFO] [stdout]     |            --------------- field in this struct
[INFO] [stdout] 355 |     /// Full name of service
[INFO] [stdout] 356 |     pub full_name: String,
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ResolvedService` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `regtype`, `name`, and `domain` are never read
[INFO] [stdout]    --> src/os/apple/register.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 105 | pub struct DNSServiceRegisterReply {
[INFO] [stdout]     |            ----------------------- fields in this struct
[INFO] [stdout] 106 |     /// Service type of successfully registered service
[INFO] [stdout] 107 |     pub regtype: String,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout] 108 |     /// Name of service
[INFO] [stdout] 109 |     pub name: String,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout] 110 |     /// Domain used for successful registration
[INFO] [stdout] 111 |     pub domain: String,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `DNSServiceRegisterReply` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]    --> src/os/apple/register.rs:133:17
[INFO] [stdout]     |
[INFO] [stdout] 133 |                 Box::from_raw(self.context);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 133 |                 let _ = Box::from_raw(self.context);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ServiceBrowserTrait` is never used
[INFO] [stdout]  --> src/browse.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub trait ServiceBrowserTrait {
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `full_name` is never read
[INFO] [stdout]    --> src/os/apple/browse.rs:356:9
[INFO] [stdout]     |
[INFO] [stdout] 354 | pub struct ResolvedService {
[INFO] [stdout]     |            --------------- field in this struct
[INFO] [stdout] 355 |     /// Full name of service
[INFO] [stdout] 356 |     pub full_name: String,
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ResolvedService` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `regtype`, `name`, and `domain` are never read
[INFO] [stdout]    --> src/os/apple/register.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 105 | pub struct DNSServiceRegisterReply {
[INFO] [stdout]     |            ----------------------- fields in this struct
[INFO] [stdout] 106 |     /// Service type of successfully registered service
[INFO] [stdout] 107 |     pub regtype: String,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout] 108 |     /// Name of service
[INFO] [stdout] 109 |     pub name: String,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout] 110 |     /// Domain used for successful registration
[INFO] [stdout] 111 |     pub domain: String,
[INFO] [stdout]     |         ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `DNSServiceRegisterReply` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/ffi/apple.rs:470:19
[INFO] [stdout]     |
[INFO] [stdout] 470 |         unsafe { &(*(::std::ptr::null::<_TXTRecordRef_t>())).PrivateData as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deref_nullptr)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/ffi/apple.rs:481:14
[INFO] [stdout]     |
[INFO] [stdout] 481 |             &(*(::std::ptr::null::<_TXTRecordRef_t>())).ForceNaturalAlignment as *const _ as usize
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]    --> src/os/apple/register.rs:133:17
[INFO] [stdout]     |
[INFO] [stdout] 133 |                 Box::from_raw(self.context);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 133 |                 let _ = Box::from_raw(self.context);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.05s
[INFO] running `Command { std: "docker" "inspect" "c465f1d3983e3ad0043c03d9b7ff6286143b1e3f9e259f4803e56a4c6b5d7526", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c465f1d3983e3ad0043c03d9b7ff6286143b1e3f9e259f4803e56a4c6b5d7526", kill_on_drop: false }`
[INFO] [stdout] c465f1d3983e3ad0043c03d9b7ff6286143b1e3f9e259f4803e56a4c6b5d7526