[INFO] fetching crate async-coap 0.1.0...
[INFO] checking async-coap-0.1.0 against master#b3bd7058c139e71bae0862ef8f8ac936208873e9 for pr-123752
[INFO] extracting crate async-coap 0.1.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate async-coap 0.1.0 on toolchain b3bd7058c139e71bae0862ef8f8ac936208873e9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async-coap 0.1.0
[INFO] finished tweaking crates.io crate async-coap 0.1.0
[INFO] tweaked toml for crates.io crate async-coap 0.1.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 65 packages
[INFO] [stderr]       Adding autocfg v0.1.8 (latest: v1.2.0)
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[INFO] [stderr]       Adding rand_core v0.3.1 (latest: v0.6.4)
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[INFO] [stderr]       Adding wasi v0.9.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded futures-preview v0.3.0-alpha.18
[INFO] [stderr]   Downloaded futures-sink-preview v0.3.0-alpha.18
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4e9a2bf1daefeb82a32adbfbb4361d70910cdbf990f06fa9475abe4131e3061f
[INFO] running `Command { std: "docker" "start" "-a" "4e9a2bf1daefeb82a32adbfbb4361d70910cdbf990f06fa9475abe4131e3061f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e9a2bf1daefeb82a32adbfbb4361d70910cdbf990f06fa9475abe4131e3061f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e9a2bf1daefeb82a32adbfbb4361d70910cdbf990f06fa9475abe4131e3061f", kill_on_drop: false }`
[INFO] [stdout] 4e9a2bf1daefeb82a32adbfbb4361d70910cdbf990f06fa9475abe4131e3061f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e62fde881080a847bdf014ce9cb893d3d84588b0c90609bbfb35dffddd92d91
[INFO] running `Command { std: "docker" "start" "-a" "3e62fde881080a847bdf014ce9cb893d3d84588b0c90609bbfb35dffddd92d91", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling regex-syntax v0.8.3
[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-iter v0.1.44
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]    Compiling futures-select-macro-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling futures-join-macro-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling async-coap-uri-macros v0.1.0
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking async-coap-uri v0.1.0
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-timer v0.3.0
[INFO] [stderr]     Checking async-coap v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: warn(rust_2018_idioms) is ignored unless specified at crate level
[INFO] [stdout]    --> src/arc_guard.rs:115:54
[INFO] [stdout]     |
[INFO] [stdout] 115 | #![warn(missing_docs, missing_debug_implementations, rust_2018_idioms)]
[INFO] [stdout]     |                                                      ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `OptionIterator` is imported redundantly
[INFO] [stdout]   --> src/message/read.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use super::*;
[INFO] [stdout]    |     -------- the item `OptionIterator` is already imported here
[INFO] [stdout] 17 | use crate::option::OptionIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]   --> src/message/token.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use core::convert::From;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `From` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Into` is imported redundantly
[INFO] [stdout]   --> src/option/insert.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use core::convert::Into;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Into` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Into` is imported redundantly
[INFO] [stdout]   --> src/option/iter.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::convert::Into;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Into` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `PhantomData` is imported redundantly
[INFO] [stdout]   --> src/send_desc/unicast_block2.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use super::*;
[INFO] [stdout]    |     -------- the item `PhantomData` is already imported here
[INFO] [stdout] 17 | use crate::message::{OwnedImmutableMessage, VecMessageEncoder};
[INFO] [stdout] 18 | use std::marker::PhantomData;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `PhantomData` is imported redundantly
[INFO] [stdout]   --> src/send_desc/uri_host_path.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use super::*;
[INFO] [stdout]    |     -------- the item `PhantomData` is already imported here
[INFO] [stdout] 17 | use std::marker::PhantomData;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]   --> src/block.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::convert::From;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `From` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `RemoteEndpoint` is imported redundantly
[INFO] [stdout]   --> src/local_endpoint.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use super::*;
[INFO] [stdout]    |     -------- the item `RemoteEndpoint` is already imported here
[INFO] [stdout] 17 |
[INFO] [stdout] 18 | use super::remote_endpoint::RemoteEndpoint;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `UriBuf` is imported redundantly
[INFO] [stdout]   --> src/remote_endpoint.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use super::*;
[INFO] [stdout]    |     -------- the item `UriBuf` is already imported here
[INFO] [stdout] 17 | use crate::UriBuf;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `SendDesc` is imported redundantly
[INFO] [stdout]   --> src/send_as_stream.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use super::*;
[INFO] [stdout]    |     -------- the item `SendDesc` is already imported here
[INFO] [stdout] 17 |
[INFO] [stdout] 18 | use crate::send_desc::SendDesc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AnyUriRef` is imported redundantly
[INFO] [stdout]   --> src/link_format.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use super::*;
[INFO] [stdout]    |     -------- the item `AnyUriRef` is already imported here
[INFO] [stdout] 21 | use crate::uri::AnyUriRef;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `RemoteEndpoint` is imported redundantly
[INFO] [stdout]   --> src/null.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use super::*;
[INFO] [stdout]    |     -------- the item `RemoteEndpoint` is already imported here
[INFO] [stdout] 20 | use crate::message::NullMessageRead;
[INFO] [stdout] 21 | use crate::remote_endpoint::RemoteEndpoint;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BoxFuture` is imported redundantly
[INFO] [stdout]   --> src/null.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use super::*;
[INFO] [stdout]    |     -------- the item `BoxFuture` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 22 | use futures::future::BoxFuture;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]   --> src/etag.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use core::convert::From;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `From` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: warn(rust_2018_idioms) is ignored unless specified at crate level
[INFO] [stdout]    --> src/arc_guard.rs:115:54
[INFO] [stdout]     |
[INFO] [stdout] 115 | #![warn(missing_docs, missing_debug_implementations, rust_2018_idioms)]
[INFO] [stdout]     |                                                      ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `OptionIterator` is imported redundantly
[INFO] [stdout]   --> src/message/read.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use super::*;
[INFO] [stdout]    |     -------- the item `OptionIterator` is already imported here
[INFO] [stdout] 17 | use crate::option::OptionIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]   --> src/message/token.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use core::convert::From;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `From` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Into` is imported redundantly
[INFO] [stdout]   --> src/option/insert.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use core::convert::Into;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Into` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Into` is imported redundantly
[INFO] [stdout]   --> src/option/iter.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::convert::Into;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Into` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `PhantomData` is imported redundantly
[INFO] [stdout]   --> src/send_desc/unicast_block2.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use super::*;
[INFO] [stdout]    |     -------- the item `PhantomData` is already imported here
[INFO] [stdout] 17 | use crate::message::{OwnedImmutableMessage, VecMessageEncoder};
[INFO] [stdout] 18 | use std::marker::PhantomData;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `PhantomData` is imported redundantly
[INFO] [stdout]   --> src/send_desc/uri_host_path.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use super::*;
[INFO] [stdout]    |     -------- the item `PhantomData` is already imported here
[INFO] [stdout] 17 | use std::marker::PhantomData;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]   --> src/block.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::convert::From;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `From` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `RemoteEndpoint` is imported redundantly
[INFO] [stdout]   --> src/local_endpoint.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use super::*;
[INFO] [stdout]    |     -------- the item `RemoteEndpoint` is already imported here
[INFO] [stdout] 17 |
[INFO] [stdout] 18 | use super::remote_endpoint::RemoteEndpoint;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `UriBuf` is imported redundantly
[INFO] [stdout]   --> src/remote_endpoint.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use super::*;
[INFO] [stdout]    |     -------- the item `UriBuf` is already imported here
[INFO] [stdout] 17 | use crate::UriBuf;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `SendDesc` is imported redundantly
[INFO] [stdout]   --> src/send_as_stream.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use super::*;
[INFO] [stdout]    |     -------- the item `SendDesc` is already imported here
[INFO] [stdout] 17 |
[INFO] [stdout] 18 | use crate::send_desc::SendDesc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AnyUriRef` is imported redundantly
[INFO] [stdout]   --> src/link_format.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use super::*;
[INFO] [stdout]    |     -------- the item `AnyUriRef` is already imported here
[INFO] [stdout] 21 | use crate::uri::AnyUriRef;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ContentFormat` is imported redundantly
[INFO] [stdout]    --> src/datagram/local_endpoint.rs:342:9
[INFO] [stdout]     |
[INFO] [stdout] 340 |     use super::*;
[INFO] [stdout]     |         -------- the item `ContentFormat` is already imported here
[INFO] [stdout] 341 |     use crate::message::MessageDisplay;
[INFO] [stdout] 342 |     use crate::ContentFormat;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `RemoteEndpoint` is imported redundantly
[INFO] [stdout]   --> src/null.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use super::*;
[INFO] [stdout]    |     -------- the item `RemoteEndpoint` is already imported here
[INFO] [stdout] 20 | use crate::message::NullMessageRead;
[INFO] [stdout] 21 | use crate::remote_endpoint::RemoteEndpoint;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BoxFuture` is imported redundantly
[INFO] [stdout]   --> src/null.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use super::*;
[INFO] [stdout]    |     -------- the item `BoxFuture` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 22 | use futures::future::BoxFuture;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]   --> src/etag.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use core::convert::From;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/b3bd7058c139e71bae0862ef8f8ac936208873e9/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `From` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `async_await` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stdout]    --> src/lib.rs:317:12
[INFO] [stdout]     |
[INFO] [stdout] 317 | #![feature(async_await)]
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `async_await` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stdout]    --> src/lib.rs:317:12
[INFO] [stdout]     |
[INFO] [stdout] 317 | #![feature(async_await)]
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `option_start` is never read
[INFO] [stdout]   --> src/message/std_parser.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct StandardMessageParser<'buf> {
[INFO] [stdout]    |            --------------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 31 |     option_start: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `StandardMessageParser` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `option_start` is never read
[INFO] [stdout]   --> src/message/std_parser.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct StandardMessageParser<'buf> {
[INFO] [stdout]    |            --------------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 31 |     option_start: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `StandardMessageParser` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.19s
[INFO] running `Command { std: "docker" "inspect" "3e62fde881080a847bdf014ce9cb893d3d84588b0c90609bbfb35dffddd92d91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e62fde881080a847bdf014ce9cb893d3d84588b0c90609bbfb35dffddd92d91", kill_on_drop: false }`
[INFO] [stdout] 3e62fde881080a847bdf014ce9cb893d3d84588b0c90609bbfb35dffddd92d91
[INFO] checking async-coap-0.1.0 against try#57fe1b734d9ff1c8a92bda60b85506b9648158d3 for pr-123752
[INFO] extracting crate async-coap 0.1.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate async-coap 0.1.0 on toolchain 57fe1b734d9ff1c8a92bda60b85506b9648158d3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+57fe1b734d9ff1c8a92bda60b85506b9648158d3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate async-coap 0.1.0
[INFO] finished tweaking crates.io crate async-coap 0.1.0
[INFO] tweaked toml for crates.io crate async-coap 0.1.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+57fe1b734d9ff1c8a92bda60b85506b9648158d3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 65 packages
[INFO] [stderr]       Adding autocfg v0.1.8 (latest: v1.2.0)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding cloudabi v0.0.3 (latest: v0.1.0)
[INFO] [stderr]       Adding futures-channel-preview v0.3.0-alpha.18 (latest: v0.3.0-alpha.19)
[INFO] [stderr]       Adding futures-core-preview v0.3.0-alpha.18 (latest: v0.3.0-alpha.19)
[INFO] [stderr]       Adding futures-executor-preview v0.3.0-alpha.18 (latest: v0.3.0-alpha.19)
[INFO] [stderr]       Adding futures-io-preview v0.3.0-alpha.18 (latest: v0.3.0-alpha.19)
[INFO] [stderr]       Adding futures-join-macro-preview v0.3.0-alpha.18 (latest: v0.3.0-alpha.19)
[INFO] [stderr]       Adding futures-preview v0.3.0-alpha.18 (latest: v0.3.0-alpha.19)
[INFO] [stderr]       Adding futures-select-macro-preview v0.3.0-alpha.18 (latest: v0.3.0-alpha.19)
[INFO] [stderr]       Adding futures-sink-preview v0.3.0-alpha.18 (latest: v0.3.0-alpha.19)
[INFO] [stderr]       Adding futures-timer v0.3.0 (latest: v3.0.3)
[INFO] [stderr]       Adding futures-util-preview v0.3.0-alpha.18 (latest: v0.3.0-alpha.19)
[INFO] [stderr]       Adding getrandom v0.1.16 (latest: v0.2.14)
[INFO] [stderr]       Adding num v0.2.1 (latest: v0.4.1)
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[INFO] [stderr]       Adding num-complex v0.2.4 (latest: v0.4.5)
[INFO] [stderr]       Adding num-rational v0.2.4 (latest: v0.4.1)
[INFO] [stderr]       Adding proc-macro2 v0.4.30 (latest: v1.0.79)
[INFO] [stderr]       Adding quote v0.6.13 (latest: v1.0.36)
[INFO] [stderr]       Adding rand v0.6.5 (latest: v0.8.5)
[INFO] [stderr]       Adding rand v0.7.3 (latest: v0.8.5)
[INFO] [stderr]       Adding rand_chacha v0.1.1 (latest: v0.3.1)
[INFO] [stderr]       Adding rand_chacha v0.2.2 (latest: v0.3.1)
[INFO] [stderr]       Adding rand_core v0.3.1 (latest: v0.6.4)
[INFO] [stderr]       Adding rand_core v0.4.2 (latest: v0.6.4)
[INFO] [stderr]       Adding rand_core v0.5.1 (latest: v0.6.4)
[INFO] [stderr]       Adding rand_hc v0.1.0 (latest: v0.3.2)
[INFO] [stderr]       Adding rand_hc v0.2.0 (latest: v0.3.2)
[INFO] [stderr]       Adding rand_isaac v0.1.1 (latest: v0.3.0)
[INFO] [stderr]       Adding rand_jitter v0.1.4 (latest: v0.4.0)
[INFO] [stderr]       Adding rand_os v0.1.3 (latest: v0.2.2)
[INFO] [stderr]       Adding rand_pcg v0.1.2 (latest: v0.3.1)
[INFO] [stderr]       Adding rand_xorshift v0.1.1 (latest: v0.3.0)
[INFO] [stderr]       Adding rdrand v0.4.0 (latest: v0.8.3)
[INFO] [stderr]       Adding syn v0.15.44 (latest: v2.0.58)
[INFO] [stderr]       Adding unicode-xid v0.1.0 (latest: v0.2.4)
[INFO] [stderr]       Adding wasi v0.9.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+57fe1b734d9ff1c8a92bda60b85506b9648158d3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+57fe1b734d9ff1c8a92bda60b85506b9648158d3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f76808f6d8f4a3448d3466677e96d15f6850969ae20135a43fb4ece8a550ce5c
[INFO] running `Command { std: "docker" "start" "-a" "f76808f6d8f4a3448d3466677e96d15f6850969ae20135a43fb4ece8a550ce5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f76808f6d8f4a3448d3466677e96d15f6850969ae20135a43fb4ece8a550ce5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f76808f6d8f4a3448d3466677e96d15f6850969ae20135a43fb4ece8a550ce5c", kill_on_drop: false }`
[INFO] [stdout] f76808f6d8f4a3448d3466677e96d15f6850969ae20135a43fb4ece8a550ce5c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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" "+57fe1b734d9ff1c8a92bda60b85506b9648158d3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cc3e2f1ca121f33fd6db872b39061173e2b2c88486ec05b4fef9c5f2d783c046
[INFO] running `Command { std: "docker" "start" "-a" "cc3e2f1ca121f33fd6db872b39061173e2b2c88486ec05b4fef9c5f2d783c046", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling regex-syntax v0.8.3
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-iter v0.1.44
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]    Compiling futures-select-macro-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling futures-join-macro-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling async-coap-uri-macros v0.1.0
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking futures-timer v0.3.0
[INFO] [stderr]     Checking async-coap-uri v0.1.0
[INFO] [stderr]     Checking async-coap v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: warn(rust_2018_idioms) is ignored unless specified at crate level
[INFO] [stdout]    --> src/arc_guard.rs:115:54
[INFO] [stdout]     |
[INFO] [stdout] 115 | #![warn(missing_docs, missing_debug_implementations, rust_2018_idioms)]
[INFO] [stdout]     |                                                      ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `OptionIterator` is imported redundantly
[INFO] [stdout]   --> src/message/read.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use super::*;
[INFO] [stdout]    |     -------- the item `OptionIterator` is already imported here
[INFO] [stdout] 17 | use crate::option::OptionIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]   --> src/message/token.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use core::convert::From;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/57fe1b734d9ff1c8a92bda60b85506b9648158d3/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `From` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Into` is imported redundantly
[INFO] [stdout]   --> src/option/insert.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use core::convert::Into;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/57fe1b734d9ff1c8a92bda60b85506b9648158d3/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Into` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Into` is imported redundantly
[INFO] [stdout]   --> src/option/iter.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::convert::Into;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/57fe1b734d9ff1c8a92bda60b85506b9648158d3/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Into` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `PhantomData` is imported redundantly
[INFO] [stdout]   --> src/send_desc/unicast_block2.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use super::*;
[INFO] [stdout]    |     -------- the item `PhantomData` is already imported here
[INFO] [stdout] 17 | use crate::message::{OwnedImmutableMessage, VecMessageEncoder};
[INFO] [stdout] 18 | use std::marker::PhantomData;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `PhantomData` is imported redundantly
[INFO] [stdout]   --> src/send_desc/uri_host_path.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use super::*;
[INFO] [stdout]    |     -------- the item `PhantomData` is already imported here
[INFO] [stdout] 17 | use std::marker::PhantomData;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]   --> src/block.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::convert::From;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/57fe1b734d9ff1c8a92bda60b85506b9648158d3/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `From` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `RemoteEndpoint` is imported redundantly
[INFO] [stdout]   --> src/local_endpoint.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use super::*;
[INFO] [stdout]    |     -------- the item `RemoteEndpoint` is already imported here
[INFO] [stdout] 17 |
[INFO] [stdout] 18 | use super::remote_endpoint::RemoteEndpoint;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `UriBuf` is imported redundantly
[INFO] [stdout]   --> src/remote_endpoint.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use super::*;
[INFO] [stdout]    |     -------- the item `UriBuf` is already imported here
[INFO] [stdout] 17 | use crate::UriBuf;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `SendDesc` is imported redundantly
[INFO] [stdout]   --> src/send_as_stream.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use super::*;
[INFO] [stdout]    |     -------- the item `SendDesc` is already imported here
[INFO] [stdout] 17 |
[INFO] [stdout] 18 | use crate::send_desc::SendDesc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AnyUriRef` is imported redundantly
[INFO] [stdout]   --> src/link_format.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use super::*;
[INFO] [stdout]    |     -------- the item `AnyUriRef` is already imported here
[INFO] [stdout] 21 | use crate::uri::AnyUriRef;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `RemoteEndpoint` is imported redundantly
[INFO] [stdout]   --> src/null.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use super::*;
[INFO] [stdout]    |     -------- the item `RemoteEndpoint` is already imported here
[INFO] [stdout] 20 | use crate::message::NullMessageRead;
[INFO] [stdout] 21 | use crate::remote_endpoint::RemoteEndpoint;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BoxFuture` is imported redundantly
[INFO] [stdout]   --> src/null.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use super::*;
[INFO] [stdout]    |     -------- the item `BoxFuture` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 22 | use futures::future::BoxFuture;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]   --> src/etag.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use core::convert::From;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/57fe1b734d9ff1c8a92bda60b85506b9648158d3/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `From` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: warn(rust_2018_idioms) is ignored unless specified at crate level
[INFO] [stdout]    --> src/arc_guard.rs:115:54
[INFO] [stdout]     |
[INFO] [stdout] 115 | #![warn(missing_docs, missing_debug_implementations, rust_2018_idioms)]
[INFO] [stdout]     |                                                      ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `OptionIterator` is imported redundantly
[INFO] [stdout]   --> src/message/read.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use super::*;
[INFO] [stdout]    |     -------- the item `OptionIterator` is already imported here
[INFO] [stdout] 17 | use crate::option::OptionIterator;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]   --> src/message/token.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use core::convert::From;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/57fe1b734d9ff1c8a92bda60b85506b9648158d3/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `From` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Into` is imported redundantly
[INFO] [stdout]   --> src/option/insert.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use core::convert::Into;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/57fe1b734d9ff1c8a92bda60b85506b9648158d3/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Into` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Into` is imported redundantly
[INFO] [stdout]   --> src/option/iter.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use std::convert::Into;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/57fe1b734d9ff1c8a92bda60b85506b9648158d3/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Into` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `PhantomData` is imported redundantly
[INFO] [stdout]   --> src/send_desc/unicast_block2.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use super::*;
[INFO] [stdout]    |     -------- the item `PhantomData` is already imported here
[INFO] [stdout] 17 | use crate::message::{OwnedImmutableMessage, VecMessageEncoder};
[INFO] [stdout] 18 | use std::marker::PhantomData;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `PhantomData` is imported redundantly
[INFO] [stdout]   --> src/send_desc/uri_host_path.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use super::*;
[INFO] [stdout]    |     -------- the item `PhantomData` is already imported here
[INFO] [stdout] 17 | use std::marker::PhantomData;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]   --> src/block.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use std::convert::From;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/57fe1b734d9ff1c8a92bda60b85506b9648158d3/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `From` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `RemoteEndpoint` is imported redundantly
[INFO] [stdout]   --> src/local_endpoint.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use super::*;
[INFO] [stdout]    |     -------- the item `RemoteEndpoint` is already imported here
[INFO] [stdout] 17 |
[INFO] [stdout] 18 | use super::remote_endpoint::RemoteEndpoint;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `UriBuf` is imported redundantly
[INFO] [stdout]   --> src/remote_endpoint.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use super::*;
[INFO] [stdout]    |     -------- the item `UriBuf` is already imported here
[INFO] [stdout] 17 | use crate::UriBuf;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `SendDesc` is imported redundantly
[INFO] [stdout]   --> src/send_as_stream.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use super::*;
[INFO] [stdout]    |     -------- the item `SendDesc` is already imported here
[INFO] [stdout] 17 |
[INFO] [stdout] 18 | use crate::send_desc::SendDesc;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AnyUriRef` is imported redundantly
[INFO] [stdout]   --> src/link_format.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use super::*;
[INFO] [stdout]    |     -------- the item `AnyUriRef` is already imported here
[INFO] [stdout] 21 | use crate::uri::AnyUriRef;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ContentFormat` is imported redundantly
[INFO] [stdout]    --> src/datagram/local_endpoint.rs:342:9
[INFO] [stdout]     |
[INFO] [stdout] 340 |     use super::*;
[INFO] [stdout]     |         -------- the item `ContentFormat` is already imported here
[INFO] [stdout] 341 |     use crate::message::MessageDisplay;
[INFO] [stdout] 342 |     use crate::ContentFormat;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `RemoteEndpoint` is imported redundantly
[INFO] [stdout]   --> src/null.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use super::*;
[INFO] [stdout]    |     -------- the item `RemoteEndpoint` is already imported here
[INFO] [stdout] 20 | use crate::message::NullMessageRead;
[INFO] [stdout] 21 | use crate::remote_endpoint::RemoteEndpoint;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BoxFuture` is imported redundantly
[INFO] [stdout]   --> src/null.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use super::*;
[INFO] [stdout]    |     -------- the item `BoxFuture` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 22 | use futures::future::BoxFuture;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]   --> src/etag.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use core::convert::From;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/57fe1b734d9ff1c8a92bda60b85506b9648158d3/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `From` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `async_await` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stdout]    --> src/lib.rs:317:12
[INFO] [stdout]     |
[INFO] [stdout] 317 | #![feature(async_await)]
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `async_await` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stdout]    --> src/lib.rs:317:12
[INFO] [stdout]     |
[INFO] [stdout] 317 | #![feature(async_await)]
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `option_start` is never read
[INFO] [stdout]   --> src/message/std_parser.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct StandardMessageParser<'buf> {
[INFO] [stdout]    |            --------------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 31 |     option_start: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `StandardMessageParser` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `option_start` is never read
[INFO] [stdout]   --> src/message/std_parser.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct StandardMessageParser<'buf> {
[INFO] [stdout]    |            --------------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 31 |     option_start: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `StandardMessageParser` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.12s
[INFO] running `Command { std: "docker" "inspect" "cc3e2f1ca121f33fd6db872b39061173e2b2c88486ec05b4fef9c5f2d783c046", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc3e2f1ca121f33fd6db872b39061173e2b2c88486ec05b4fef9c5f2d783c046", kill_on_drop: false }`
[INFO] [stdout] cc3e2f1ca121f33fd6db872b39061173e2b2c88486ec05b4fef9c5f2d783c046
