[INFO] fetching crate kwap 0.8.1...
[INFO] checking kwap-0.8.1 against master#9a42c6509d399fd205917ebce474b31315c5d3e9 for pr-97427
[INFO] extracting crate kwap 0.8.1 into /workspace/builds/worker-21/source
[INFO] validating manifest of crates.io crate kwap 0.8.1 on toolchain 9a42c6509d399fd205917ebce474b31315c5d3e9
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9a42c6509d399fd205917ebce474b31315c5d3e9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kwap 0.8.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate kwap 0.8.1
[INFO] tweaked toml for crates.io crate kwap 0.8.1 written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] crate crates.io crate kwap 0.8.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9a42c6509d399fd205917ebce474b31315c5d3e9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded no-std-net v0.6.0
[INFO] [stderr]   Downloaded kwap-msg v0.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+9a42c6509d399fd205917ebce474b31315c5d3e9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 856bf194965a2818e16d00e567d7a1d1c3bff5d10e18f53376910f02e172aea8
[INFO] running `Command { std: "docker" "start" "-a" "856bf194965a2818e16d00e567d7a1d1c3bff5d10e18f53376910f02e172aea8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "856bf194965a2818e16d00e567d7a1d1c3bff5d10e18f53376910f02e172aea8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "856bf194965a2818e16d00e567d7a1d1c3bff5d10e18f53376910f02e172aea8", kill_on_drop: false }`
[INFO] [stdout] 856bf194965a2818e16d00e567d7a1d1c3bff5d10e18f53376910f02e172aea8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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" "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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+9a42c6509d399fd205917ebce474b31315c5d3e9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a9fcd21c4ee59ddf82cf7469fbe484bea0d1712dc3c5ce6a5a10580526cdd521
[INFO] running `Command { std: "docker" "start" "-a" "a9fcd21c4ee59ddf82cf7469fbe484bea0d1712dc3c5ce6a5a10580526cdd521", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling regex-syntax v0.6.26
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling time-macros v0.2.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking num_threads v0.1.6
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]     Checking no-std-net v0.6.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking kwap-common v0.6.4
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking time v0.3.9
[INFO] [stderr]     Checking simple_logger v2.1.0
[INFO] [stderr]     Checking crypto-common v0.1.3
[INFO] [stderr]     Checking block-buffer v0.10.2
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking digest v0.10.3
[INFO] [stderr]    Compiling regex v1.5.6
[INFO] [stderr]     Checking blake2 v0.10.4
[INFO] [stderr]     Checking num v0.3.1
[INFO] [stderr]     Checking embedded-time v0.12.1
[INFO] [stderr]    Compiling kwap-macros v0.1.7
[INFO] [stderr]     Checking kwap-msg v0.5.1
[INFO] [stderr]     Checking kwap v0.8.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `msg_summary`
[INFO] [stdout]   --> src/core/mod.rs:16:28
[INFO] [stdout]    |
[INFO] [stdout] 16 | use crate::logging::{self, msg_summary};
[INFO] [stdout]    |                            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `code_to_human`
[INFO] [stdout]   --> src/core/mod.rs:23:19
[INFO] [stdout]    |
[INFO] [stdout] 23 | use crate::todo::{code_to_human, Capacity};
[INFO] [stdout]    |                   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `IpAddr`
[INFO] [stdout]  --> src/net.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | use no_std_net::{IpAddr, SocketAddr};
[INFO] [stdout]   |                  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `exponential_retrier`
[INFO] [stdout]    --> src/retry.rs:262:6
[INFO] [stdout]     |
[INFO] [stdout] 262 |   fn exponential_retrier() {
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `default_leisure_millis`
[INFO] [stdout]  --> src/config.rs:9:3
[INFO] [stdout]   |
[INFO] [stdout] 9 |   pub(crate) default_leisure_millis: u32,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `nstart`
[INFO] [stdout]   --> src/config.rs:11:3
[INFO] [stdout]    |
[INFO] [stdout] 11 |   pub(crate) nstart: u8,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `probing_rate_bytes_per_sec`
[INFO] [stdout]   --> src/config.rs:12:3
[INFO] [stdout]    |
[INFO] [stdout] 12 |   pub(crate) probing_rate_bytes_per_sec: u16,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `max_transmit_wait_millis`
[INFO] [stdout]   --> src/config.rs:22:17
[INFO] [stdout]    |
[INFO] [stdout] 22 |   pub(crate) fn max_transmit_wait_millis(&self) -> u32 {
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `msg_summary`
[INFO] [stdout]   --> src/core/mod.rs:16:28
[INFO] [stdout]    |
[INFO] [stdout] 16 | use crate::logging::{self, msg_summary};
[INFO] [stdout]    |                            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `code_to_human`
[INFO] [stdout]   --> src/core/mod.rs:23:19
[INFO] [stdout]    |
[INFO] [stdout] 23 | use crate::todo::{code_to_human, Capacity};
[INFO] [stdout]    |                   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `IpAddr`
[INFO] [stdout]  --> src/net.rs:1:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | use no_std_net::{IpAddr, SocketAddr};
[INFO] [stdout]   |                  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `default_leisure_millis`
[INFO] [stdout]  --> src/config.rs:9:3
[INFO] [stdout]   |
[INFO] [stdout] 9 |   pub(crate) default_leisure_millis: u32,
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `nstart`
[INFO] [stdout]   --> src/config.rs:11:3
[INFO] [stdout]    |
[INFO] [stdout] 11 |   pub(crate) nstart: u8,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `probing_rate_bytes_per_sec`
[INFO] [stdout]   --> src/config.rs:12:3
[INFO] [stdout]    |
[INFO] [stdout] 12 |   pub(crate) probing_rate_bytes_per_sec: u16,
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `max_transmit_wait_millis`
[INFO] [stdout]   --> src/config.rs:22:17
[INFO] [stdout]    |
[INFO] [stdout] 22 |   pub(crate) fn max_transmit_wait_millis(&self) -> u32 {
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.31s
[INFO] running `Command { std: "docker" "inspect" "a9fcd21c4ee59ddf82cf7469fbe484bea0d1712dc3c5ce6a5a10580526cdd521", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9fcd21c4ee59ddf82cf7469fbe484bea0d1712dc3c5ce6a5a10580526cdd521", kill_on_drop: false }`
[INFO] [stdout] a9fcd21c4ee59ddf82cf7469fbe484bea0d1712dc3c5ce6a5a10580526cdd521