[INFO] fetching crate nitox 0.1.9... [INFO] checking nitox-0.1.9 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] extracting crate nitox 0.1.9 into /workspace/builds/worker-0-tc1/source [INFO] validating manifest of crates.io crate nitox 0.1.9 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate nitox 0.1.9 [INFO] finished tweaking crates.io crate nitox 0.1.9 [INFO] tweaked toml for crates.io crate nitox 0.1.9 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 179 packages [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 cast v0.2.7 (latest: v0.3.0) [INFO] [stderr] Adding cfg-if v0.1.10 (latest: v1.0.0) [INFO] [stderr] Adding clap v2.34.0 (latest: v4.5.4) [INFO] [stderr] Adding cloudabi v0.0.3 (latest: v0.1.0) [INFO] [stderr] Adding criterion v0.2.11 (latest: v0.5.1) [INFO] [stderr] Adding criterion-plot v0.3.1 (latest: v0.5.0) [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 v0.7.2 (latest: v0.8.19) [INFO] [stderr] Adding darling v0.9.0 (latest: v0.20.8) [INFO] [stderr] Adding darling_core v0.9.0 (latest: v0.20.8) [INFO] [stderr] Adding darling_macro v0.9.0 (latest: v0.20.8) [INFO] [stderr] Adding derive_builder v0.7.2 (latest: v0.20.0) [INFO] [stderr] Adding derive_builder_core v0.5.0 (latest: v0.20.0) [INFO] [stderr] Adding env_logger v0.6.2 (latest: v0.11.3) [INFO] [stderr] Adding foreign-types v0.3.2 (latest: v0.5.0) [INFO] [stderr] Adding foreign-types-shared v0.1.1 (latest: v0.3.1) [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 idna v0.1.5 (latest: v0.5.0) [INFO] [stderr] Adding itertools v0.8.2 (latest: v0.12.1) [INFO] [stderr] Adding linux-raw-sys v0.4.13 (latest: v0.6.4) [INFO] [stderr] Adding lock_api v0.1.5 (latest: v0.4.11) [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 v0.6.4 (latest: v0.12.1) [INFO] [stderr] Adding parking_lot v0.9.0 (latest: v0.12.1) [INFO] [stderr] Adding parking_lot_core v0.3.1 (latest: v0.9.9) [INFO] [stderr] Adding parking_lot_core v0.6.3 (latest: v0.9.9) [INFO] [stderr] Adding percent-encoding v1.0.1 (latest: v2.3.1) [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 v0.5.6 (latest: v0.8.5) [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_os v0.1.3 (latest: v0.2.2) [INFO] [stderr] Adding rand_xoshiro v0.1.0 (latest: v0.6.0) [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 rustc_version v0.2.3 (latest: v0.4.0) [INFO] [stderr] Adding scopeguard v0.3.3 (latest: v1.2.0) [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 strsim v0.7.0 (latest: v0.11.1) [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 textwrap v0.11.0 (latest: v0.16.1) [INFO] [stderr] Adding tokio v0.1.22 (latest: v1.37.0) [INFO] [stderr] Adding tokio-tls v0.2.1 (latest: v0.3.1) [INFO] [stderr] Adding unicode-xid v0.1.0 (latest: v0.2.4) [INFO] [stderr] Adding url v1.7.2 (latest: v2.5.0) [INFO] [stderr] Adding winapi v0.2.8 (latest: v0.3.9) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded tokio-tls v0.2.1 [INFO] [stderr] Downloaded darling_macro v0.9.0 [INFO] [stderr] Downloaded darling v0.9.0 [INFO] [stderr] Downloaded lock_api v0.1.5 [INFO] [stderr] Downloaded strsim v0.7.0 [INFO] [stderr] Downloaded darling_core v0.9.0 [INFO] [stderr] Downloaded derive_builder_core v0.5.0 [INFO] [stderr] Downloaded derive_builder v0.7.2 [INFO] [stderr] Downloaded parking_lot_core v0.3.1 [INFO] [stderr] Downloaded parking_lot v0.6.4 [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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 33738fc7c9d4d300acaccdcffda9b5474e8a1458072f39cad7978a76894a845f [INFO] running `Command { std: "docker" "start" "-a" "33738fc7c9d4d300acaccdcffda9b5474e8a1458072f39cad7978a76894a845f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "33738fc7c9d4d300acaccdcffda9b5474e8a1458072f39cad7978a76894a845f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "33738fc7c9d4d300acaccdcffda9b5474e8a1458072f39cad7978a76894a845f", kill_on_drop: false }` [INFO] [stdout] 33738fc7c9d4d300acaccdcffda9b5474e8a1458072f39cad7978a76894a845f [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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 88de1a7a35beacdb103c0ffe2a319e7dbcc9be0828625c4db229220129332b24 [INFO] running `Command { std: "docker" "start" "-a" "88de1a7a35beacdb103c0ffe2a319e7dbcc9be0828625c4db229220129332b24", kill_on_drop: false }` [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] Compiling crossbeam-utils v0.7.2 [INFO] [stderr] Checking rand_core v0.4.2 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Compiling semver v1.0.22 [INFO] [stderr] Checking lock_api v0.3.4 [INFO] [stderr] Compiling memoffset v0.5.6 [INFO] [stderr] Checking iovec v0.1.4 [INFO] [stderr] Checking net2 v0.2.39 [INFO] [stderr] Compiling syn v2.0.58 [INFO] [stderr] Compiling crossbeam-epoch v0.8.2 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling ident_case v1.0.1 [INFO] [stderr] Compiling strsim v0.7.0 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Compiling fnv v1.0.7 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling serde_json v1.0.115 [INFO] [stderr] Checking stable_deref_trait v1.2.0 [INFO] [stderr] Checking owning_ref v0.4.1 [INFO] [stderr] Checking mio v0.6.23 [INFO] [stderr] Checking rand v0.5.6 [INFO] [stderr] Checking object v0.32.2 [INFO] [stderr] Compiling derive_builder v0.7.2 [INFO] [stderr] Checking smallvec v0.6.14 [INFO] [stderr] Checking scopeguard v0.3.3 [INFO] [stderr] Checking lock_api v0.1.5 [INFO] [stderr] Checking itertools v0.8.2 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling rustc_version v0.4.0 [INFO] [stderr] Checking humantime v1.3.0 [INFO] [stderr] Checking rand_xoshiro v0.1.0 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking mio-uds v0.6.8 [INFO] [stderr] Compiling parking_lot_core v0.6.3 [INFO] [stderr] Compiling parking_lot v0.9.0 [INFO] [stderr] Compiling parking_lot_core v0.3.1 [INFO] [stderr] Compiling cast v0.2.7 [INFO] [stderr] Checking env_logger v0.6.2 [INFO] [stderr] Checking crossbeam-queue v0.2.3 [INFO] [stderr] Checking tinytemplate v1.2.1 [INFO] [stderr] Checking tokio-executor v0.1.10 [INFO] [stderr] Checking tokio-io v0.1.13 [INFO] [stderr] Checking tokio-sync v0.1.8 [INFO] [stderr] Checking crossbeam-deque v0.7.4 [INFO] [stderr] Checking tokio-timer v0.2.13 [INFO] [stderr] Checking tokio-current-thread v0.1.7 [INFO] [stderr] Checking parking_lot v0.6.4 [INFO] [stderr] Checking tokio-threadpool v0.1.18 [INFO] [stderr] Checking criterion-plot v0.3.1 [INFO] [stderr] Checking tokio-reactor v0.1.12 [INFO] [stderr] Checking tokio-codec v0.1.2 [INFO] [stderr] Checking tokio-fs v0.1.7 [INFO] [stderr] Checking tokio-tcp v0.1.4 [INFO] [stderr] Checking tokio-uds v0.2.7 [INFO] [stderr] Checking tokio-udp v0.1.6 [INFO] [stderr] Checking tokio v0.1.22 [INFO] [stderr] Compiling synstructure v0.12.6 [INFO] [stderr] Compiling darling_core v0.9.0 [INFO] [stderr] Compiling failure_derive v0.1.8 [INFO] [stderr] Compiling openssl-macros v0.1.1 [INFO] [stderr] Compiling serde_derive v1.0.197 [INFO] [stderr] Checking openssl v0.10.64 [INFO] [stderr] Checking backtrace v0.3.71 [INFO] [stderr] Checking failure v0.1.8 [INFO] [stderr] Compiling darling_macro v0.9.0 [INFO] [stderr] Compiling darling v0.9.0 [INFO] [stderr] Compiling derive_builder_core v0.5.0 [INFO] [stderr] Checking criterion v0.2.11 [INFO] [stderr] Checking native-tls v0.2.11 [INFO] [stderr] Checking tokio-tls v0.2.1 [INFO] [stderr] Checking nitox v0.1.9 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `Command` is imported redundantly [INFO] [stdout] --> src/protocol/op.rs:1:26 [INFO] [stdout] | [INFO] [stdout] 1 | use super::{commands::*, Command, CommandError}; [INFO] [stdout] | ----------- ^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | the item `Command` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `tokio_executor` is imported redundantly [INFO] [stdout] --> src/net/connection.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | use tokio_executor; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:97:1 [INFO] [stdout] | [INFO] [stdout] 97 | extern crate tokio_executor; [INFO] [stdout] | ---------------------------- the item `tokio_executor` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Future` is imported redundantly [INFO] [stdout] --> src/client.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 5 | prelude::*, [INFO] [stdout] | ---------- the item `Future` is already imported here [INFO] [stdout] ... [INFO] [stdout] 8 | Future, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `tokio_executor` is imported redundantly [INFO] [stdout] --> src/client.rs:17:5 [INFO] [stdout] | [INFO] [stdout] 17 | use tokio_executor; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:97:1 [INFO] [stdout] | [INFO] [stdout] 97 | extern crate tokio_executor; [INFO] [stdout] | ---------------------------- the item `tokio_executor` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/client.rs:297:25 [INFO] [stdout] | [INFO] [stdout] 297 | if let Some(mut s) = (*self.rx.subs_tx.write()).get_mut(&cmd.sid) { [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `other_tx` is never read [INFO] [stdout] --> src/client.rs:73:5 [INFO] [stdout] | [INFO] [stdout] 72 | struct NatsClientMultiplexer { [INFO] [stdout] | --------------------- field in this struct [INFO] [stdout] 73 | other_tx: Arc>, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `NatsClientMultiplexer` 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: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Command` is imported redundantly [INFO] [stdout] --> src/protocol/op.rs:1:26 [INFO] [stdout] | [INFO] [stdout] 1 | use super::{commands::*, Command, CommandError}; [INFO] [stdout] | ----------- ^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | the item `Command` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `tokio_executor` is imported redundantly [INFO] [stdout] --> src/net/connection.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | use tokio_executor; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:97:1 [INFO] [stdout] | [INFO] [stdout] 97 | extern crate tokio_executor; [INFO] [stdout] | ---------------------------- the item `tokio_executor` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Future` is imported redundantly [INFO] [stdout] --> src/client.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 5 | prelude::*, [INFO] [stdout] | ---------- the item `Future` is already imported here [INFO] [stdout] ... [INFO] [stdout] 8 | Future, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `tokio_executor` is imported redundantly [INFO] [stdout] --> src/client.rs:17:5 [INFO] [stdout] | [INFO] [stdout] 17 | use tokio_executor; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:97:1 [INFO] [stdout] | [INFO] [stdout] 97 | extern crate tokio_executor; [INFO] [stdout] | ---------------------------- the item `tokio_executor` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/client.rs:297:25 [INFO] [stdout] | [INFO] [stdout] 297 | if let Some(mut s) = (*self.rx.subs_tx.write()).get_mut(&cmd.sid) { [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `other_tx` is never read [INFO] [stdout] --> src/client.rs:73:5 [INFO] [stdout] | [INFO] [stdout] 72 | struct NatsClientMultiplexer { [INFO] [stdout] | --------------------- field in this struct [INFO] [stdout] 73 | other_tx: Arc>, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `NatsClientMultiplexer` 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: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.63s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.2.11 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2` [INFO] running `Command { std: "docker" "inspect" "88de1a7a35beacdb103c0ffe2a319e7dbcc9be0828625c4db229220129332b24", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "88de1a7a35beacdb103c0ffe2a319e7dbcc9be0828625c4db229220129332b24", kill_on_drop: false }` [INFO] [stdout] 88de1a7a35beacdb103c0ffe2a319e7dbcc9be0828625c4db229220129332b24