[INFO] fetching crate rumqtt 0.31.0... [INFO] checking rumqtt-0.31.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] extracting crate rumqtt 0.31.0 into /workspace/builds/worker-0-tc1/source [INFO] validating manifest of crates.io crate rumqtt 0.31.0 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 rumqtt 0.31.0 [INFO] finished tweaking crates.io crate rumqtt 0.31.0 [INFO] tweaked toml for crates.io crate rumqtt 0.31.0 written to /workspace/builds/worker-0-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] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 145 packages [INFO] [stderr] Adding autocfg v0.1.8 (latest: v1.2.0) [INFO] [stderr] Adding base64 v0.10.1 (latest: v0.22.0) [INFO] [stderr] Adding bitflags v1.3.2 (latest: v2.5.0) [INFO] [stderr] Adding bytes v0.4.12 (latest: v1.6.0) [INFO] [stderr] Adding cfg-if v0.1.10 (latest: v1.0.0) [INFO] [stderr] Adding cloudabi v0.0.3 (latest: v0.1.0) [INFO] [stderr] Adding crossbeam-channel v0.3.9 (latest: v0.5.12) [INFO] [stderr] Adding crossbeam-deque v0.7.4 (latest: v0.8.5) [INFO] [stderr] Adding crossbeam-epoch v0.8.2 (latest: v0.9.18) [INFO] [stderr] Adding crossbeam-queue v0.2.3 (latest: v0.3.11) [INFO] [stderr] Adding crossbeam-utils v0.6.6 (latest: v0.8.19) [INFO] [stderr] Adding crossbeam-utils v0.7.2 (latest: v0.8.19) [INFO] [stderr] Adding derive_more v0.13.0 (latest: v0.99.17) [INFO] [stderr] Adding env_logger v0.6.2 (latest: v0.11.3) [INFO] [stderr] Adding envy v0.3.3 (latest: v0.4.2) [INFO] [stderr] Adding futures v0.1.31 (latest: v0.3.30) [INFO] [stderr] Adding hermit-abi v0.1.19 (latest: v0.3.9) [INFO] [stderr] Adding humantime v1.3.0 (latest: v2.1.0) [INFO] [stderr] Adding jsonwebtoken v6.0.1 (latest: v9.3.0) [INFO] [stderr] Adding lock_api v0.3.4 (latest: v0.4.11) [INFO] [stderr] Adding memoffset v0.5.6 (latest: v0.9.1) [INFO] [stderr] Adding mio v0.6.23 (latest: v0.8.11) [INFO] [stderr] Adding miow v0.2.2 (latest: v0.6.0) [INFO] [stderr] Adding object v0.32.2 (latest: v0.34.0) [INFO] [stderr] Adding parking_lot v0.9.0 (latest: v0.12.1) [INFO] [stderr] Adding parking_lot_core v0.6.3 (latest: v0.9.9) [INFO] [stderr] Adding pretty_env_logger v0.3.1 (latest: v0.5.0) [INFO] [stderr] Adding proc-macro2 v0.4.30 (latest: v1.0.79) [INFO] [stderr] Adding quick-error v1.2.3 (latest: v2.0.1) [INFO] [stderr] Adding quote v0.6.13 (latest: v1.0.35) [INFO] [stderr] Adding rand v0.6.5 (latest: v0.8.5) [INFO] [stderr] Adding rand_chacha v0.1.1 (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_hc v0.1.0 (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 redox_syscall v0.1.57 (latest: v0.5.1) [INFO] [stderr] Adding ring v0.14.6 (latest: v0.17.8) [INFO] [stderr] Adding rustc_version v0.2.3 (latest: v0.4.0) [INFO] [stderr] Adding rustls v0.15.2 (latest: v0.23.4) [INFO] [stderr] Adding sct v0.5.0 (latest: v0.7.1) [INFO] [stderr] Adding semver v0.9.0 (latest: v1.0.22) [INFO] [stderr] Adding semver-parser v0.7.0 (latest: v0.10.2) [INFO] [stderr] Adding smallvec v0.6.14 (latest: v1.13.2) [INFO] [stderr] Adding spin v0.5.2 (latest: v0.9.8) [INFO] [stderr] Adding syn v0.15.44 (latest: v2.0.58) [INFO] [stderr] Adding syn v1.0.109 (latest: v2.0.58) [INFO] [stderr] Adding synstructure v0.12.6 (latest: v0.13.1) [INFO] [stderr] Adding tokio v0.1.22 (latest: v1.37.0) [INFO] [stderr] Adding tokio-rustls v0.9.4 (latest: v0.26.0) [INFO] [stderr] Adding unicode-xid v0.1.0 (latest: v0.2.4) [INFO] [stderr] Adding untrusted v0.6.2 (latest: v0.9.0) [INFO] [stderr] Adding uuid v0.7.4 (latest: v1.8.0) [INFO] [stderr] Adding webpki v0.19.1 (latest: v0.22.4) [INFO] [stderr] Adding winapi v0.2.8 (latest: v0.3.9) [INFO] [stderr] Adding windows-core v0.52.0 (latest: v0.55.0) [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 mqtt311 v0.2.0 [INFO] [stderr] Downloaded webpki v0.19.1 [INFO] [stderr] Downloaded tokio-rustls v0.9.4 [INFO] [stderr] Downloaded untrusted v0.6.2 [INFO] [stderr] Downloaded pretty_env_logger v0.3.1 [INFO] [stderr] Downloaded jsonwebtoken v6.0.1 [INFO] [stderr] Downloaded sct v0.5.0 [INFO] [stderr] Downloaded derive_more v0.13.0 [INFO] [stderr] Downloaded rustls v0.15.2 [INFO] [stderr] Downloaded ring v0.14.6 [INFO] [stderr] Downloaded envy v0.3.3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] e5cee7eab7212ce8023e81bc5c4a71f99a31d857c286e5b87ab79598aadc5b30 [INFO] running `Command { std: "docker" "start" "-a" "e5cee7eab7212ce8023e81bc5c4a71f99a31d857c286e5b87ab79598aadc5b30", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e5cee7eab7212ce8023e81bc5c4a71f99a31d857c286e5b87ab79598aadc5b30", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e5cee7eab7212ce8023e81bc5c4a71f99a31d857c286e5b87ab79598aadc5b30", kill_on_drop: false }` [INFO] [stdout] e5cee7eab7212ce8023e81bc5c4a71f99a31d857c286e5b87ab79598aadc5b30 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] cd80e5def6b4805c3ff0068eede95e72d58f0beccafa87e0f8e5d9d69b192e66 [INFO] running `Command { std: "docker" "start" "-a" "cd80e5def6b4805c3ff0068eede95e72d58f0beccafa87e0f8e5d9d69b192e66", kill_on_drop: false }` [INFO] [stderr] Compiling crossbeam-utils v0.7.2 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Checking futures v0.1.31 [INFO] [stderr] Checking memchr v2.7.2 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Compiling ring v0.14.6 [INFO] [stderr] Compiling memoffset v0.5.6 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Checking untrusted v0.6.2 [INFO] [stderr] Checking smallvec v0.6.14 [INFO] [stderr] Compiling num-traits v0.2.18 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling crossbeam-epoch v0.8.2 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Checking lock_api v0.3.4 [INFO] [stderr] Checking net2 v0.2.39 [INFO] [stderr] Compiling parking_lot_core v0.6.3 [INFO] [stderr] Compiling parking_lot v0.9.0 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Checking tokio-executor v0.1.10 [INFO] [stderr] Checking tokio-io v0.1.13 [INFO] [stderr] Compiling quote v0.6.13 [INFO] [stderr] Checking tokio-sync v0.1.8 [INFO] [stderr] Checking mio v0.6.23 [INFO] [stderr] Checking aho-corasick v1.1.3 [INFO] [stderr] Checking object v0.32.2 [INFO] [stderr] Checking base64 v0.10.1 [INFO] [stderr] Checking crossbeam-deque v0.7.4 [INFO] [stderr] Checking crossbeam-queue v0.2.3 [INFO] [stderr] Compiling syn v2.0.58 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking quick-error v1.2.3 [INFO] [stderr] Checking serde_json v1.0.115 [INFO] [stderr] Checking tokio-reactor v0.1.12 [INFO] [stderr] Checking chrono v0.4.37 [INFO] [stderr] Checking regex-automata v0.4.6 [INFO] [stderr] Checking tokio-tcp v0.1.4 [INFO] [stderr] Checking humantime v1.3.0 [INFO] [stderr] Checking rand v0.6.5 [INFO] [stderr] Checking tokio-threadpool v0.1.18 [INFO] [stderr] Checking tokio-codec v0.1.2 [INFO] [stderr] Checking tokio-current-thread v0.1.7 [INFO] [stderr] Checking tokio-timer v0.2.13 [INFO] [stderr] Checking crossbeam-utils v0.6.6 [INFO] [stderr] Checking termcolor v1.4.1 [INFO] [stderr] Checking crossbeam-channel v0.3.9 [INFO] [stderr] Checking tokio v0.1.22 [INFO] [stderr] Checking uuid v0.7.4 [INFO] [stderr] Checking envy v0.3.3 [INFO] [stderr] Checking webpki v0.19.1 [INFO] [stderr] Checking sct v0.5.0 [INFO] [stderr] Checking backtrace v0.3.71 [INFO] [stderr] Checking rustls v0.15.2 [INFO] [stderr] Checking failure v0.1.8 [INFO] [stderr] Compiling derive_more v0.13.0 [INFO] [stderr] Checking regex v1.10.4 [INFO] [stderr] Compiling serde_derive v1.0.197 [INFO] [stderr] Checking env_logger v0.6.2 [INFO] [stderr] Checking pretty_env_logger v0.3.1 [INFO] [stderr] Checking tokio-rustls v0.9.4 [INFO] [stderr] Checking mqtt311 v0.2.0 [INFO] [stderr] Checking jsonwebtoken v6.0.1 [INFO] [stderr] Checking rumqtt v0.31.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `crossbeam_channel` is imported redundantly [INFO] [stdout] --> src/client/mod.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use crossbeam_channel; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ the item `crossbeam_channel` 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 `crossbeam_channel` is imported redundantly [INFO] [stdout] --> src/client/connection.rs:10:25 [INFO] [stdout] | [INFO] [stdout] 10 | use crossbeam_channel::{self, Sender}; [INFO] [stdout] | ^^^^ the item `crossbeam_channel` is already defined by prelude [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Result` is imported redundantly [INFO] [stdout] --> src/client/mqttstate.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | result::Result, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Result` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `IntoIterator` is imported redundantly [INFO] [stdout] --> src/client/prepend.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::iter::IntoIterator; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `IntoIterator` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `mqtt311` is imported redundantly [INFO] [stdout] --> src/codec.rs:4:15 [INFO] [stdout] | [INFO] [stdout] 4 | use mqtt311::{self, MqttRead, MqttWrite, Packet}; [INFO] [stdout] | ^^^^ the item `mqtt311` is already defined by prelude [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `jsonwebtoken` is imported redundantly [INFO] [stdout] --> src/error.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | use jsonwebtoken; [INFO] [stdout] | ^^^^^^^^^^^^ the item `jsonwebtoken` is already defined by prelude [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `crossbeam_channel` is imported redundantly [INFO] [stdout] --> src/client/mod.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | use crossbeam_channel; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ the item `crossbeam_channel` 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 `crossbeam_channel` is imported redundantly [INFO] [stdout] --> src/client/connection.rs:10:25 [INFO] [stdout] | [INFO] [stdout] 10 | use crossbeam_channel::{self, Sender}; [INFO] [stdout] | ^^^^ the item `crossbeam_channel` is already defined by prelude [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Result` is imported redundantly [INFO] [stdout] --> src/client/mqttstate.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | result::Result, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Result` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `IntoIterator` is imported redundantly [INFO] [stdout] --> src/client/prepend.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::iter::IntoIterator; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:134:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `IntoIterator` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `mqtt311` is imported redundantly [INFO] [stdout] --> src/codec.rs:4:15 [INFO] [stdout] | [INFO] [stdout] 4 | use mqtt311::{self, MqttRead, MqttWrite, Packet}; [INFO] [stdout] | ^^^^ the item `mqtt311` is already defined by prelude [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `jsonwebtoken` is imported redundantly [INFO] [stdout] --> src/error.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | use jsonwebtoken; [INFO] [stdout] | ^^^^^^^^^^^^ the item `jsonwebtoken` is already defined by prelude [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing [INFO] [stdout] --> examples/tls.rs:25:38 [INFO] [stdout] | [INFO] [stdout] 25 | mqtt_client.publish(topic.clone(), QoS::AtLeastOnce, false, payload).unwrap(); [INFO] [stdout] | ^^^^^^^^ help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.40s [INFO] running `Command { std: "docker" "inspect" "cd80e5def6b4805c3ff0068eede95e72d58f0beccafa87e0f8e5d9d69b192e66", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cd80e5def6b4805c3ff0068eede95e72d58f0beccafa87e0f8e5d9d69b192e66", kill_on_drop: false }` [INFO] [stdout] cd80e5def6b4805c3ff0068eede95e72d58f0beccafa87e0f8e5d9d69b192e66