[INFO] fetching crate kadcast 0.7.0-rc.6...
[INFO] checking kadcast-0.7.0-rc.6 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate kadcast 0.7.0-rc.6 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate kadcast 0.7.0-rc.6 on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate kadcast 0.7.0-rc.6
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate kadcast 0.7.0-rc.6
[INFO] tweaked toml for crates.io crate kadcast 0.7.0-rc.6 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate kadcast 0.7.0-rc.6 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" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e213351d671124e0c23f14eaabb83c11546b1b154044e7ae054e4c0a3a2c1062
[INFO] running `Command { std: "docker" "start" "-a" "e213351d671124e0c23f14eaabb83c11546b1b154044e7ae054e4c0a3a2c1062", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e213351d671124e0c23f14eaabb83c11546b1b154044e7ae054e4c0a3a2c1062", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e213351d671124e0c23f14eaabb83c11546b1b154044e7ae054e4c0a3a2c1062", kill_on_drop: false }`
[INFO] [stdout] e213351d671124e0c23f14eaabb83c11546b1b154044e7ae054e4c0a3a2c1062
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Dtail_expr_drop_order" "-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 364e985bb3059e5a3dfcf2ff55681dbff41d6305c04811817a4ea5ac9bc95c92
[INFO] running `Command { std: "docker" "start" "-a" "364e985bb3059e5a3dfcf2ff55681dbff41d6305c04811817a4ea5ac9bc95c92", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking subtle v2.5.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking tracing-core v0.1.31
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]     Checking regex-automata v0.3.8
[INFO] [stderr]    Compiling semver v1.0.23
[INFO] [stderr]     Checking konst_macro_rules v0.2.19
[INFO] [stderr]    Compiling syn v2.0.31
[INFO] [stderr]    Compiling konst_proc_macros v0.2.11
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]     Checking thread_local v1.1.7
[INFO] [stderr]     Checking arrayvec v0.7.4
[INFO] [stderr]     Checking smallvec v1.11.0
[INFO] [stderr]     Checking raptorq v2.0.0
[INFO] [stderr]     Checking rustc_tools_util v0.2.1
[INFO] [stderr]     Checking tracing-log v0.1.3
[INFO] [stderr]     Checking konst v0.2.19
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking socket2 v0.5.3
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking mio v0.8.8
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking chrono v0.4.28
[INFO] [stderr]     Checking regex v1.9.5
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking blake2 v0.10.6
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.188
[INFO] [stderr]    Compiling tracing-attributes v0.1.26
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]     Checking tokio v1.32.0
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking serde v1.0.188
[INFO] [stderr]     Checking humantime-serde v1.1.1
[INFO] [stderr]     Checking serde_json v1.0.105
[INFO] [stderr]     Checking tracing-serde v0.1.3
[INFO] [stderr]     Checking toml v0.5.11
[INFO] [stderr]     Checking kadcast v0.7.0-rc.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `BinaryNonce`
[INFO] [stdout]   --> src/kbucket.rs:14:36
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub use key::{BinaryID, BinaryKey, BinaryNonce};
[INFO] [stdout]    |                                    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tracing-subscriber v0.2.25
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BinaryNonce`
[INFO] [stdout]   --> src/kbucket.rs:14:36
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub use key::{BinaryID, BinaryKey, BinaryNonce};
[INFO] [stdout]    |                                    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.06s
[INFO] running `Command { std: "docker" "inspect" "364e985bb3059e5a3dfcf2ff55681dbff41d6305c04811817a4ea5ac9bc95c92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "364e985bb3059e5a3dfcf2ff55681dbff41d6305c04811817a4ea5ac9bc95c92", kill_on_drop: false }`
[INFO] [stdout] 364e985bb3059e5a3dfcf2ff55681dbff41d6305c04811817a4ea5ac9bc95c92