[INFO] fetching crate igcp 0.1.6...
[INFO] checking igcp-0.1.6 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate igcp 0.1.6 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate igcp 0.1.6 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate igcp 0.1.6
[INFO] finished tweaking crates.io crate igcp 0.1.6
[INFO] tweaked toml for crates.io crate igcp 0.1.6 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 184 packages to latest compatible versions
[INFO] [stderr]       Adding aead v0.4.3 (available: v0.5.2)
[INFO] [stderr]       Adding aes v0.7.5 (available: v0.8.4)
[INFO] [stderr]       Adding aes-gcm v0.9.4 (available: v0.10.3)
[INFO] [stderr]       Adding async-channel v1.9.0 (available: v2.3.1)
[INFO] [stderr]       Adding async-tungstenite v0.16.1 (available: v0.28.0)
[INFO] [stderr]       Adding base64 v0.13.1 (available: v0.22.1)
[INFO] [stderr]       Adding blake2 v0.9.2 (available: v0.10.6)
[INFO] [stderr]       Adding block-buffer v0.9.0 (available: v0.10.4)
[INFO] [stderr]       Adding chacha20 v0.7.3 (available: v0.9.1)
[INFO] [stderr]       Adding chacha20poly1305 v0.8.2 (available: v0.10.1)
[INFO] [stderr]       Adding cipher v0.3.0 (available: v0.4.4)
[INFO] [stderr]       Adding convert_case v0.4.0 (available: v0.6.0)
[INFO] [stderr]       Adding crypto-mac v0.8.0 (available: v0.11.1)
[INFO] [stderr]       Adding ctr v0.8.0 (available: v0.9.2)
[INFO] [stderr]       Adding curve25519-dalek v3.2.1 (available: v4.1.3)
[INFO] [stderr]       Adding derive_more v0.99.18 (available: v1.0.0)
[INFO] [stderr]       Adding digest v0.9.0 (available: v0.10.7)
[INFO] [stderr]       Adding event-listener v2.5.3 (available: v5.3.1)
[INFO] [stderr]       Adding fastrand v1.9.0 (available: v2.1.1)
[INFO] [stderr]       Adding futures-lite v1.13.0 (available: v2.3.0)
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v1.1.0)
[INFO] [stderr]       Adding getrandom v0.1.16 (available: v0.2.15)
[INFO] [stderr]       Adding ghash v0.4.4 (available: v0.5.1)
[INFO] [stderr]       Adding gloo-utils v0.1.7 (available: v0.2.0)
[INFO] [stderr]       Adding hash32 v0.2.1 (available: v0.3.1)
[INFO] [stderr]       Adding heapless v0.7.17 (available: v0.8.0)
[INFO] [stderr]       Adding http v0.2.12 (available: v1.1.0)
[INFO] [stderr]       Adding idna v0.5.0 (available: v1.0.2)
[INFO] [stderr]       Adding linux-raw-sys v0.4.14 (available: v0.6.5)
[INFO] [stderr]       Adding poly1305 v0.7.2 (available: v0.8.0)
[INFO] [stderr]       Adding polyval v0.5.3 (available: v0.6.2)
[INFO] [stderr]       Adding postcard v0.7.3 (available: v1.0.10)
[INFO] [stderr]       Adding postcard-cobs v0.1.5-pre (available: v0.2.0)
[INFO] [stderr]       Adding radium v0.7.0 (available: v1.1.0)
[INFO] [stderr]       Adding rand_core v0.5.1 (available: v0.6.4)
[INFO] [stderr]       Adding reqwasm v0.4.1 (available: v0.5.0)
[INFO] [stderr]       Adding rustc_version v0.3.3 (available: v0.4.1)
[INFO] [stderr]       Adding semver v0.11.0 (available: v1.0.23)
[INFO] [stderr]       Adding sha-1 v0.9.8 (available: v0.10.1)
[INFO] [stderr]       Adding sha2 v0.9.9 (available: v0.10.8)
[INFO] [stderr]       Adding snow v0.8.0 (available: v0.9.6)
[INFO] [stderr]       Adding subtle v2.4.1 (available: v2.6.1)
[INFO] [stderr]       Adding tungstenite v0.16.0 (available: v0.24.0)
[INFO] [stderr]       Adding universal-hash v0.4.1 (available: v0.5.1)
[INFO] [stderr]       Adding uuid v0.8.2 (available: v1.10.0)
[INFO] [stderr]       Adding wasi v0.9.0+wasi-snapshot-preview1 (available: v0.13.2+wasi-0.2.1)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (available: v0.13.2+wasi-0.2.1)
[INFO] [stderr]       Adding windows-sys v0.52.0 (available: v0.59.0)
[INFO] [stderr]       Adding wyz v0.5.1 (available: v0.6.1)
[INFO] [stderr]       Adding x25519-dalek v1.2.0 (available: v2.0.1)
[INFO] [stderr]       Adding zeroize v1.3.0 (available: v1.8.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9aea26bd5b15ab2da1cd14559509195d13b5f145055639f9b017033cfddddc6c
[INFO] running `Command { std: "docker" "start" "-a" "9aea26bd5b15ab2da1cd14559509195d13b5f145055639f9b017033cfddddc6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9aea26bd5b15ab2da1cd14559509195d13b5f145055639f9b017033cfddddc6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9aea26bd5b15ab2da1cd14559509195d13b5f145055639f9b017033cfddddc6c", kill_on_drop: false }`
[INFO] [stdout] 9aea26bd5b15ab2da1cd14559509195d13b5f145055639f9b017033cfddddc6c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1f5d4a8b03976249c0dd60092130a72ada09a82e51c0aff5593fef8cbaa4a2b8
[INFO] running `Command { std: "docker" "start" "-a" "1f5d4a8b03976249c0dd60092130a72ada09a82e51c0aff5593fef8cbaa4a2b8", kill_on_drop: false }`
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]    Compiling syn v2.0.79
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]     Checking parking v2.2.1
[INFO] [stderr]     Checking concurrent-queue v2.5.0
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling ucd-trie v0.1.6
[INFO] [stderr]    Compiling semver v1.0.23
[INFO] [stderr]    Compiling rustix v0.38.37
[INFO] [stderr]     Checking event-listener v5.3.1
[INFO] [stderr]     Checking futures-lite v2.3.0
[INFO] [stderr]     Checking linux-raw-sys v0.4.14
[INFO] [stderr]     Checking event-listener-strategy v0.5.2
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking universal-hash v0.4.1
[INFO] [stderr]     Checking cipher v0.3.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking value-bag v1.9.0
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]     Checking log v0.4.22
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking unicode-normalization v0.1.24
[INFO] [stderr]     Checking unicode-bidi v0.3.15
[INFO] [stderr]     Checking async-task v4.7.1
[INFO] [stderr]     Checking atomic-waker v1.1.2
[INFO] [stderr]    Compiling radium v0.7.0
[INFO] [stderr]     Checking piper v0.2.4
[INFO] [stderr]    Compiling heapless v0.7.17
[INFO] [stderr]     Checking polyval v0.5.3
[INFO] [stderr]     Checking async-lock v3.4.0
[INFO] [stderr]     Checking async-channel v2.3.1
[INFO] [stderr]     Checking aead v0.4.3
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]    Compiling num-conv v0.1.0
[INFO] [stderr]     Checking powerfmt v0.2.0
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]    Compiling serde_json v1.0.128
[INFO] [stderr]    Compiling time-core v0.1.2
[INFO] [stderr]     Checking deranged v0.3.11
[INFO] [stderr]    Compiling time-macros v0.2.18
[INFO] [stderr]     Checking wyz v0.5.1
[INFO] [stderr]     Checking blocking v1.6.1
[INFO] [stderr]     Checking ghash v0.4.4
[INFO] [stderr]     Checking async-executor v1.13.1
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking url v2.5.2
[INFO] [stderr]     Checking aes v0.7.5
[INFO] [stderr]     Checking ctr v0.8.0
[INFO] [stderr]     Checking sha-1 v0.9.8
[INFO] [stderr]     Checking poly1305 v0.7.2
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]     Checking utf-8 v0.7.6
[INFO] [stderr]     Checking funty v2.0.0
[INFO] [stderr]     Checking event-listener v2.5.3
[INFO] [stderr]     Checking aes-gcm v0.9.4
[INFO] [stderr]     Checking blake2 v0.9.2
[INFO] [stderr]     Checking async-channel v1.9.0
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking sha2 v0.9.9
[INFO] [stderr]     Checking waker-fn v1.2.0
[INFO] [stderr]     Checking postcard-cobs v0.1.5-pre
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]     Checking bitvec v1.0.1
[INFO] [stderr]     Checking futures-lite v1.13.0
[INFO] [stderr]     Checking time v0.3.36
[INFO] [stderr]    Compiling thiserror-impl v1.0.64
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling serde_derive v1.0.210
[INFO] [stderr]    Compiling zeroize_derive v1.4.2
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling serde_repr v0.1.19
[INFO] [stderr]    Compiling derive_more v0.99.18
[INFO] [stderr]     Checking zeroize v1.3.0
[INFO] [stderr]     Checking curve25519-dalek v3.2.1
[INFO] [stderr]     Checking chacha20 v0.7.3
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking chacha20poly1305 v0.8.2
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking polling v3.7.3
[INFO] [stderr]    Compiling thiserror v1.0.64
[INFO] [stderr]    Compiling pest v2.7.13
[INFO] [stderr]     Checking x25519-dalek v1.2.0
[INFO] [stderr]     Checking async-io v2.3.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking async-global-executor v2.4.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking async-std v1.13.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]     Checking serde v1.0.210
[INFO] [stderr]     Checking tungstenite v0.16.0
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]    Compiling rustc_version v0.3.3
[INFO] [stderr]    Compiling snow v0.8.0
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking async-tungstenite v0.16.1
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking uuid v1.10.0
[INFO] [stderr]     Checking serde_bytes v0.11.15
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking postcard v0.7.3
[INFO] [stderr]     Checking bson v2.13.0
[INFO] [stderr]     Checking igcp v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `TcpListener`
[INFO] [stdout]  --> src/io.rs:7:26
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use async_std::net::{TcpListener, TcpStream};
[INFO] [stdout]   |                          ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `UnixListener`
[INFO] [stdout]   --> src/io.rs:11:36
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub use async_std::os::unix::net::{UnixListener, UnixStream};
[INFO] [stdout]    |                                    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TcpListener`
[INFO] [stdout]  --> src/io.rs:7:26
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use async_std::net::{TcpListener, TcpStream};
[INFO] [stdout]   |                          ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `UnixListener`
[INFO] [stdout]   --> src/io.rs:11:36
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub use async_std::os::unix::net::{UnixListener, UnixStream};
[INFO] [stdout]    |                                    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 00s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: snow v0.8.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "1f5d4a8b03976249c0dd60092130a72ada09a82e51c0aff5593fef8cbaa4a2b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f5d4a8b03976249c0dd60092130a72ada09a82e51c0aff5593fef8cbaa4a2b8", kill_on_drop: false }`
[INFO] [stdout] 1f5d4a8b03976249c0dd60092130a72ada09a82e51c0aff5593fef8cbaa4a2b8