[INFO] fetching crate wstcp 0.2.1...
[INFO] checking wstcp-0.2.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate wstcp 0.2.1 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate wstcp 0.2.1 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wstcp 0.2.1
[INFO] finished tweaking crates.io crate wstcp 0.2.1
[INFO] tweaked toml for crates.io crate wstcp 0.2.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate wstcp 0.2.1 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded trackable_derive v1.0.0
[INFO] [stderr]   Downloaded trackable v1.3.0
[INFO] [stderr]   Downloaded slog-term v2.9.0
[INFO] [stderr]   Downloaded time-macros v0.2.11
[INFO] [stderr]   Downloaded time v0.3.25
[INFO] [stderr]   Downloaded value-bag v1.4.1
[INFO] [stderr]   Downloaded serde v1.0.182
[INFO] [stderr]   Downloaded sloggers v2.1.1
[INFO] [stderr]   Downloaded async-executor v1.5.1
[INFO] [stderr]   Downloaded libflate_lz77 v1.2.0
[INFO] [stderr]   Downloaded serde_derive v1.0.182
[INFO] [stderr]   Downloaded slog-kvfilter v0.7.0
[INFO] [stderr]   Downloaded windows-acl v0.3.0
[INFO] [stderr]   Downloaded pin-project-lite v0.2.11
[INFO] [stderr]   Downloaded bytecodec v0.4.15
[INFO] [stderr]   Downloaded trackable v0.2.24
[INFO] [stderr]   Downloaded cc v1.0.81
[INFO] [stderr]   Downloaded libflate v1.4.0
[INFO] [stderr]   Downloaded slog-async v2.7.0
[INFO] [stderr]   Downloaded deranged v0.3.7
[INFO] [stderr]   Downloaded httpcodec v0.2.3
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d3fd1eec92152f57cabe1628440691b8ab1571cbf923a563ecc511cc5a0e618d
[INFO] running `Command { std: "docker" "start" "-a" "d3fd1eec92152f57cabe1628440691b8ab1571cbf923a563ecc511cc5a0e618d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d3fd1eec92152f57cabe1628440691b8ab1571cbf923a563ecc511cc5a0e618d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3fd1eec92152f57cabe1628440691b8ab1571cbf923a563ecc511cc5a0e618d", kill_on_drop: false }`
[INFO] [stdout] d3fd1eec92152f57cabe1628440691b8ab1571cbf923a563ecc511cc5a0e618d
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fc4972ee4a002525ce0d96e4074c1101d565c6728cc3db35b001f435eb548f30
[INFO] running `Command { std: "docker" "start" "-a" "fc4972ee4a002525ce0d96e4074c1101d565c6728cc3db35b001f435eb548f30", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]     Checking value-bag v1.4.1
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling slog v2.7.0
[INFO] [stderr]     Checking log v0.4.19
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]     Checking parking v2.1.0
[INFO] [stderr]     Checking pin-project-lite v0.2.11
[INFO] [stderr]     Checking concurrent-queue v2.2.0
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking async-lock v2.7.0
[INFO] [stderr]     Checking futures-lite v1.13.0
[INFO] [stderr]    Compiling polling v2.8.0
[INFO] [stderr]    Compiling quote v1.0.32
[INFO] [stderr]    Compiling rustix v0.37.23
[INFO] [stderr]     Checking aho-corasick v1.0.2
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]    Compiling async-io v1.13.0
[INFO] [stderr]     Checking regex-syntax v0.7.4
[INFO] [stderr]     Checking async-task v4.4.0
[INFO] [stderr]    Compiling time-core v0.1.1
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling time-macros v0.2.11
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking io-lifetimes v1.0.11
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]     Checking async-channel v1.9.0
[INFO] [stderr]     Checking thread_local v1.1.7
[INFO] [stderr]     Checking atomic-waker v1.1.1
[INFO] [stderr]    Compiling serde v1.0.182
[INFO] [stderr]    Compiling slog-async v2.7.0
[INFO] [stderr]     Checking num_threads v0.1.6
[INFO] [stderr]     Checking arc-swap v1.6.0
[INFO] [stderr]     Checking rle-decode-fast v1.0.3
[INFO] [stderr]     Checking deranged v0.3.7
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]     Checking slog-scope v4.4.0
[INFO] [stderr]     Checking libflate_lz77 v1.2.0
[INFO] [stderr]     Checking blocking v1.3.1
[INFO] [stderr]     Checking term v0.7.0
[INFO] [stderr]     Checking regex-automata v0.3.6
[INFO] [stderr]     Checking async-executor v1.5.1
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking iana-time-zone v0.1.57
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.182
[INFO] [stderr]     Checking time v0.3.25
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking async-global-executor v2.3.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking chrono v0.4.26
[INFO] [stderr]     Checking libflate v1.4.0
[INFO] [stderr]     Checking slog-stdlog v4.1.1
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]     Checking cpufeatures v0.2.9
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking sha-1 v0.9.8
[INFO] [stderr]     Checking async-std v1.12.0
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]    Compiling trackable_derive v1.0.0
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]     Checking slog-term v2.9.0
[INFO] [stderr]     Checking trackable v1.3.0
[INFO] [stderr]     Checking trackable v0.2.24
[INFO] [stderr]     Checking bytecodec v0.4.15
[INFO] [stderr]     Checking regex v1.9.3
[INFO] [stderr]     Checking slog-kvfilter v0.7.0
[INFO] [stderr]     Checking httpcodec v0.2.3
[INFO] [stderr]     Checking sloggers v2.1.1
[INFO] [stderr]     Checking wstcp v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `bytecodec` is imported redundantly
[INFO] [stdout]   --> src/frame.rs:6:17
[INFO] [stdout]    |
[INFO] [stdout] 6  | use bytecodec::{self, ByteCount, Decode, Encode, Eos};
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | extern crate bytecodec;
[INFO] [stdout]    | ----------------------- the item `bytecodec` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `bytecodec` is imported redundantly
[INFO] [stdout]   --> src/frame.rs:6:17
[INFO] [stdout]    |
[INFO] [stdout] 6  | use bytecodec::{self, ByteCount, Decode, Encode, Eos};
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | extern crate bytecodec;
[INFO] [stdout]    | ----------------------- the item `bytecodec` is already imported here
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.83s
[INFO] running `Command { std: "docker" "inspect" "fc4972ee4a002525ce0d96e4074c1101d565c6728cc3db35b001f435eb548f30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc4972ee4a002525ce0d96e4074c1101d565c6728cc3db35b001f435eb548f30", kill_on_drop: false }`
[INFO] [stdout] fc4972ee4a002525ce0d96e4074c1101d565c6728cc3db35b001f435eb548f30