[INFO] fetching crate async-coap 0.1.0...
[INFO] checking async-coap-0.1.0 against try#7b3da9103634dffd4f4365cfd8642427c781d99f+rustflags=-Dinherent-method-on-receiver for 152214-denied-retry-0
[INFO] extracting crate async-coap 0.1.0 into /workspace/builds/worker-5-tc2/source
[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-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate async-coap 0.1.0 on toolchain 7b3da9103634dffd4f4365cfd8642427c781d99f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7b3da9103634dffd4f4365cfd8642427c781d99f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7b3da9103634dffd4f4365cfd8642427c781d99f" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 70 packages to latest compatible versions
[INFO] [stderr]       Adding futures-channel-preview v0.3.0-alpha.18 (available: v0.3.0-alpha.19)
[INFO] [stderr]       Adding futures-core-preview v0.3.0-alpha.18 (available: v0.3.0-alpha.19)
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[INFO] [stderr]       Adding futures-select-macro-preview v0.3.0-alpha.18 (available: v0.3.0-alpha.19)
[INFO] [stderr]       Adding futures-sink-preview v0.3.0-alpha.18 (available: v0.3.0-alpha.19)
[INFO] [stderr]       Adding futures-timer v0.3.0 (available: v3.0.3)
[INFO] [stderr]       Adding futures-util-preview v0.3.0-alpha.18 (available: v0.3.0-alpha.19)
[INFO] [stderr]       Adding num v0.2.1 (available: v0.4.3)
[INFO] [stderr]       Adding rand v0.6.5 (available: v0.10.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7b3da9103634dffd4f4365cfd8642427c781d99f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+7b3da9103634dffd4f4365cfd8642427c781d99f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 393f395631c31f19abdbd8270c4c3417d2dfdb81223212d10647a918ba6e6bf3
[INFO] running `Command { std: "docker" "start" "-a" "393f395631c31f19abdbd8270c4c3417d2dfdb81223212d10647a918ba6e6bf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "393f395631c31f19abdbd8270c4c3417d2dfdb81223212d10647a918ba6e6bf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "393f395631c31f19abdbd8270c4c3417d2dfdb81223212d10647a918ba6e6bf3", kill_on_drop: false }`
[INFO] [stdout] 393f395631c31f19abdbd8270c4c3417d2dfdb81223212d10647a918ba6e6bf3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dinherent-method-on-receiver" "-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+7b3da9103634dffd4f4365cfd8642427c781d99f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b7291fcfcce76e3ef736509023702feb5439dafee339668943eeb4244bd65199
[INFO] running `Command { std: "docker" "start" "-a" "b7291fcfcce76e3ef736509023702feb5439dafee339668943eeb4244bd65199", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.181
[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 proc-macro-hack v0.5.20+deprecated
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling zerocopy v0.8.39
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking memchr v2.8.0
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling regex-syntax v0.8.9
[INFO] [stderr]     Checking slab v0.4.12
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking log v0.4.29
[INFO] [stderr]     Checking aho-corasick v1.1.4
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[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking num_cpus v1.17.0
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking regex-automata v0.4.14
[INFO] [stderr]    Compiling futures-join-macro-preview v0.3.0-alpha.18
[INFO] [stderr]    Compiling futures-select-macro-preview v0.3.0-alpha.18
[INFO] [stderr]     Checking regex v1.12.3
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]    Compiling async-coap-uri-macros v0.1.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking async-coap-uri v0.1.0
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.18
[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 v0.1.0 (/opt/rustwide/workdir)
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: inherent methods on types that implement `Deref` or `Receiver` shadow methods of their target
[INFO] [stdout]    --> src/arc_guard.rs:158:17
[INFO] [stdout]     |
[INFO] [stdout] 158 |     pub fn head(&self) -> &Arc<RC> {
[INFO] [stdout]     |                 ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 166 | impl<RC, T> Deref for ArcGuard<RC, T> {
[INFO] [stdout]     | ------------------------------------- trait implemented here
[INFO] [stdout] 167 |     type Target = T;
[INFO] [stdout]     |     ----------- with `Target` set here
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D inherent-method-on-receiver`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/remote_endpoint.rs:100:62
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn send<'a, R, SD>(&'a self, send_desc: SD) -> BoxFuture<'_, Result<R, Error>>
[INFO] [stdout]     |                         -- the lifetime is named here        ^^ the same lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 100 -     fn send<'a, R, SD>(&'a self, send_desc: SD) -> BoxFuture<'_, Result<R, Error>>
[INFO] [stdout] 100 +     fn send<'a, R, SD>(&'a self, send_desc: SD) -> BoxFuture<'a, Result<R, Error>>
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/remote_endpoint.rs:107:79
[INFO] [stdout]     |
[INFO] [stdout] 107 |     fn send_to<'a, R, SD, UF>(&'a self, path: UF, send_desc: SD) -> BoxFuture<'_, Result<R, Error>>
[INFO] [stdout]     |                                -- the lifetime is named here                  ^^ the same lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 107 -     fn send_to<'a, R, SD, UF>(&'a self, path: UF, send_desc: SD) -> BoxFuture<'_, Result<R, Error>>
[INFO] [stdout] 107 +     fn send_to<'a, R, SD, UF>(&'a self, path: UF, send_desc: SD) -> BoxFuture<'a, Result<R, Error>>
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/null.rs:101:63
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn send<'a, R, SD>(&'a self, _send_desc: SD) -> BoxFuture<'_, Result<R, Error>>
[INFO] [stdout]     |                         -- the lifetime is named here         ^^ the same lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 101 -     fn send<'a, R, SD>(&'a self, _send_desc: SD) -> BoxFuture<'_, Result<R, Error>>
[INFO] [stdout] 101 +     fn send<'a, R, SD>(&'a self, _send_desc: SD) -> BoxFuture<'a, Result<R, Error>>
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/null.rs:113:20
[INFO] [stdout]     |
[INFO] [stdout] 110 |         &'a self,
[INFO] [stdout]     |          -- the lifetime is named here
[INFO] [stdout] ...
[INFO] [stdout] 113 |     ) -> BoxFuture<'_, Result<R, Error>>
[INFO] [stdout]     |                    ^^ the same lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 113 -     ) -> BoxFuture<'_, Result<R, Error>>
[INFO] [stdout] 113 +     ) -> BoxFuture<'a, Result<R, Error>>
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `async-coap` (lib) due to 1 previous error; 6 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: inherent methods on types that implement `Deref` or `Receiver` shadow methods of their target
[INFO] [stdout]    --> src/arc_guard.rs:158:17
[INFO] [stdout]     |
[INFO] [stdout] 158 |     pub fn head(&self) -> &Arc<RC> {
[INFO] [stdout]     |                 ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 166 | impl<RC, T> Deref for ArcGuard<RC, T> {
[INFO] [stdout]     | ------------------------------------- trait implemented here
[INFO] [stdout] 167 |     type Target = T;
[INFO] [stdout]     |     ----------- with `Target` set here
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D inherent-method-on-receiver`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/remote_endpoint.rs:100:62
[INFO] [stdout]     |
[INFO] [stdout] 100 |     fn send<'a, R, SD>(&'a self, send_desc: SD) -> BoxFuture<'_, Result<R, Error>>
[INFO] [stdout]     |                         -- the lifetime is named here        ^^ the same lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 100 -     fn send<'a, R, SD>(&'a self, send_desc: SD) -> BoxFuture<'_, Result<R, Error>>
[INFO] [stdout] 100 +     fn send<'a, R, SD>(&'a self, send_desc: SD) -> BoxFuture<'a, Result<R, Error>>
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/remote_endpoint.rs:107:79
[INFO] [stdout]     |
[INFO] [stdout] 107 |     fn send_to<'a, R, SD, UF>(&'a self, path: UF, send_desc: SD) -> BoxFuture<'_, Result<R, Error>>
[INFO] [stdout]     |                                -- the lifetime is named here                  ^^ the same lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 107 -     fn send_to<'a, R, SD, UF>(&'a self, path: UF, send_desc: SD) -> BoxFuture<'_, Result<R, Error>>
[INFO] [stdout] 107 +     fn send_to<'a, R, SD, UF>(&'a self, path: UF, send_desc: SD) -> BoxFuture<'a, Result<R, Error>>
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/null.rs:101:63
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn send<'a, R, SD>(&'a self, _send_desc: SD) -> BoxFuture<'_, Result<R, Error>>
[INFO] [stdout]     |                         -- the lifetime is named here         ^^ the same lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 101 -     fn send<'a, R, SD>(&'a self, _send_desc: SD) -> BoxFuture<'_, Result<R, Error>>
[INFO] [stdout] 101 +     fn send<'a, R, SD>(&'a self, _send_desc: SD) -> BoxFuture<'a, Result<R, Error>>
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/null.rs:113:20
[INFO] [stdout]     |
[INFO] [stdout] 110 |         &'a self,
[INFO] [stdout]     |          -- the lifetime is named here
[INFO] [stdout] ...
[INFO] [stdout] 113 |     ) -> BoxFuture<'_, Result<R, Error>>
[INFO] [stdout]     |                    ^^ the same lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 113 -     ) -> BoxFuture<'_, Result<R, Error>>
[INFO] [stdout] 113 +     ) -> BoxFuture<'a, Result<R, Error>>
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `async-coap` (lib test) due to 1 previous error; 6 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "b7291fcfcce76e3ef736509023702feb5439dafee339668943eeb4244bd65199", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7291fcfcce76e3ef736509023702feb5439dafee339668943eeb4244bd65199", kill_on_drop: false }`
[INFO] [stdout] b7291fcfcce76e3ef736509023702feb5439dafee339668943eeb4244bd65199
