[INFO] fetching crate slimproto 0.1.14...
[INFO] checking slimproto-0.1.14 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate slimproto 0.1.14 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate slimproto 0.1.14 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 slimproto 0.1.14
[INFO] finished tweaking crates.io crate slimproto 0.1.14
[INFO] tweaked toml for crates.io crate slimproto 0.1.14 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 16 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding memoffset v0.6.5 (latest: v0.9.1)
[INFO] [stderr]       Adding nix v0.23.2 (latest: v0.28.0)
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded socket-server-mocker v0.0.4
[INFO] [stderr]   Downloaded framous v0.1.3
[INFO] [stderr]   Downloaded mac_address v1.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] f2ddf6b03a013cd1c28566cdd1097c5f7e71cad81f155608e00edd2c769b4cca
[INFO] running `Command { std: "docker" "start" "-a" "f2ddf6b03a013cd1c28566cdd1097c5f7e71cad81f155608e00edd2c769b4cca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2ddf6b03a013cd1c28566cdd1097c5f7e71cad81f155608e00edd2c769b4cca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2ddf6b03a013cd1c28566cdd1097c5f7e71cad81f155608e00edd2c769b4cca", kill_on_drop: false }`
[INFO] [stdout] f2ddf6b03a013cd1c28566cdd1097c5f7e71cad81f155608e00edd2c769b4cca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] b64c1b721c84a284f008a25aa15aed3bfe6b1dcab56cf23072e3b051cbd3935f
[INFO] running `Command { std: "docker" "start" "-a" "b64c1b721c84a284f008a25aa15aed3bfe6b1dcab56cf23072e3b051cbd3935f", kill_on_drop: false }`
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]     Checking socket-server-mocker v0.0.4
[INFO] [stderr]     Checking framous v0.1.3
[INFO] [stderr]     Checking nix v0.23.2
[INFO] [stderr]     Checking mac_address v1.1.5
[INFO] [stderr]     Checking slimproto v0.1.14 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `framous` is imported redundantly
[INFO] [stdout]  --> src/codec.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | use framous::{self, Decoder, Encoder};
[INFO] [stdout]   |               ^^^^ the item `framous` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]   --> src/codec.rs:15:11
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::{convert::TryInto, io, net::Ipv4Addr, time::Duration};
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryInto` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]   --> src/codec.rs:15:11
[INFO] [stdout]    |
[INFO] [stdout] 15 | use std::{convert::TryInto, io, net::Ipv4Addr, time::Duration};
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `TryInto` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings 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 2.55s
[INFO] running `Command { std: "docker" "inspect" "b64c1b721c84a284f008a25aa15aed3bfe6b1dcab56cf23072e3b051cbd3935f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b64c1b721c84a284f008a25aa15aed3bfe6b1dcab56cf23072e3b051cbd3935f", kill_on_drop: false }`
[INFO] [stdout] b64c1b721c84a284f008a25aa15aed3bfe6b1dcab56cf23072e3b051cbd3935f