[INFO] fetching crate mail-core 0.6.2... [INFO] checking mail-core-0.6.2 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] extracting crate mail-core 0.6.2 into /workspace/builds/worker-5-tc1/source [INFO] validating manifest of crates.io crate mail-core 0.6.2 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 mail-core 0.6.2 [INFO] finished tweaking crates.io crate mail-core 0.6.2 [INFO] tweaked toml for crates.io crate mail-core 0.6.2 written to /workspace/builds/worker-5-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] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 96 packages [INFO] [stderr] Adding base64 v0.6.0 (latest: v0.22.0) [INFO] [stderr] Adding futures v0.1.31 (latest: v0.3.30) [INFO] [stderr] Adding idna v0.1.5 (latest: v0.5.0) [INFO] [stderr] Adding lazy_static v0.2.11 (latest: v1.4.0) [INFO] [stderr] Adding log v0.3.9 (latest: v0.4.21) [INFO] [stderr] Adding memchr v1.0.2 (latest: v2.7.2) [INFO] [stderr] Adding nom v3.2.1 (latest: v7.1.3) [INFO] [stderr] Adding object v0.32.2 (latest: v0.34.0) [INFO] [stderr] Adding percent-encoding v1.0.1 (latest: v2.3.1) [INFO] [stderr] Adding quick-error v1.2.3 (latest: v2.0.1) [INFO] [stderr] Adding quoted_printable v0.4.8 (latest: v0.5.0) [INFO] [stderr] Adding rand v0.3.23 (latest: v0.8.5) [INFO] [stderr] Adding rand v0.4.6 (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 rdrand v0.4.0 (latest: v0.8.3) [INFO] [stderr] Adding safemem v0.2.0 (latest: v0.3.3) [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 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded quoted-string v0.6.1 [INFO] [stderr] Downloaded media-type-impl-utils v0.3.0-unstable [INFO] [stderr] Downloaded quoted_printable v0.4.8 [INFO] [stderr] Downloaded nom v3.2.1 [INFO] [stderr] Downloaded soft-ascii-string v1.1.0 [INFO] [stderr] Downloaded checked_command v0.2.4 [INFO] [stderr] Downloaded vec-drain-where v1.0.1 [INFO] [stderr] Downloaded total-order-multi-map v0.4.6 [INFO] [stderr] Downloaded mail-headers v0.6.6 [INFO] [stderr] Downloaded memchr v1.0.2 [INFO] [stderr] Downloaded mail-internals v0.2.3 [INFO] [stderr] Downloaded lut v0.1.0-unstable [INFO] [stderr] Downloaded media-type v0.4.0-unstable [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 112a54875ce3a5ffa2cdc4f98857b5fb18c5ccd7f2494c80b03aa670eaa8c125 [INFO] running `Command { std: "docker" "start" "-a" "112a54875ce3a5ffa2cdc4f98857b5fb18c5ccd7f2494c80b03aa670eaa8c125", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "112a54875ce3a5ffa2cdc4f98857b5fb18c5ccd7f2494c80b03aa670eaa8c125", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "112a54875ce3a5ffa2cdc4f98857b5fb18c5ccd7f2494c80b03aa670eaa8c125", kill_on_drop: false }` [INFO] [stdout] 112a54875ce3a5ffa2cdc4f98857b5fb18c5ccd7f2494c80b03aa670eaa8c125 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 1f1ee1acebfb00451f51030344a7a3abed026bbaf018b5470fa635b5cc7505ed [INFO] running `Command { std: "docker" "start" "-a" "1f1ee1acebfb00451f51030344a7a3abed026bbaf018b5470fa635b5cc7505ed", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.153 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Checking adler v1.0.2 [INFO] [stderr] Checking memchr v2.7.2 [INFO] [stderr] Checking gimli v0.28.1 [INFO] [stderr] Compiling failure_derive v0.1.8 [INFO] [stderr] Checking lazy_static v0.2.11 [INFO] [stderr] Compiling unicode-xid v0.2.4 [INFO] [stderr] Checking rustc-demangle v0.1.23 [INFO] [stderr] Checking quoted-string v0.6.1 [INFO] [stderr] Compiling backtrace v0.3.71 [INFO] [stderr] Checking byteorder v1.5.0 [INFO] [stderr] Checking stable_deref_trait v1.2.0 [INFO] [stderr] Checking safemem v0.2.0 [INFO] [stderr] Compiling serde v1.0.197 [INFO] [stderr] Checking chrono v0.4.37 [INFO] [stderr] Checking lut v0.1.0-unstable [INFO] [stderr] Checking vec-drain-where v1.0.1 [INFO] [stderr] Compiling checked_command v0.2.4 [INFO] [stderr] Checking soft-ascii-string v1.1.0 [INFO] [stderr] Checking miniz_oxide v0.7.2 [INFO] [stderr] Checking vec1 v1.12.0 [INFO] [stderr] Checking media-type-impl-utils v0.3.0-unstable [INFO] [stderr] Checking quoted_printable v0.4.8 [INFO] [stderr] Checking base64 v0.6.0 [INFO] [stderr] Checking total-order-multi-map v0.4.6 [INFO] [stderr] Checking owning_ref v0.4.1 [INFO] [stderr] Checking quick-error v1.2.3 [INFO] [stderr] Checking futures v0.1.31 [INFO] [stderr] Checking log v0.3.9 [INFO] [stderr] Checking media-type v0.4.0-unstable [INFO] [stderr] Checking object v0.32.2 [INFO] [stderr] Checking memchr v1.0.2 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Checking num_cpus v1.16.0 [INFO] [stderr] Checking nom v3.2.1 [INFO] [stderr] Checking futures-cpupool v0.1.8 [INFO] [stderr] Checking addr2line v0.21.0 [INFO] [stderr] Checking rand v0.3.23 [INFO] [stderr] Compiling synstructure v0.12.6 [INFO] [stderr] Checking serde_json v1.0.115 [INFO] [stderr] Checking serde_test v1.0.176 [INFO] [stderr] Checking failure v0.1.8 [INFO] [stderr] Checking mail-internals v0.2.3 [INFO] [stderr] Checking mail-headers v0.6.6 [INFO] [stderr] Checking mail-core v0.6.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `Send` is imported redundantly [INFO] [stdout] --> src/utils.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use std::marker::Send; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Send` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `chrono` is imported redundantly [INFO] [stdout] --> src/utils.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | use chrono; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:14:1 [INFO] [stdout] | [INFO] [stdout] 14 | extern crate chrono; [INFO] [stdout] | -------------------- the item `chrono` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `rand` is imported redundantly [INFO] [stdout] --> src/mime.rs:2:12 [INFO] [stdout] | [INFO] [stdout] 2 | use rand::{self, Rng}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:16:1 [INFO] [stdout] | [INFO] [stdout] 16 | extern crate rand; [INFO] [stdout] | ------------------ the item `rand` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Default` is imported redundantly [INFO] [stdout] --> src/resource/data.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | default::Default, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Default` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `ToOwned` is imported redundantly [INFO] [stdout] --> src/resource/loading.rs:3:14 [INFO] [stdout] | [INFO] [stdout] 3 | borrow::{ToOwned, Borrow}, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `ToOwned` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `_From` is imported redundantly [INFO] [stdout] --> src/mail.rs:781:17 [INFO] [stdout] | [INFO] [stdout] 781 | _From, ContentType, ContentTransferEncoding, [INFO] [stdout] | ^^^^^ [INFO] [stdout] ... [INFO] [stdout] 786 | use super::super::*; [INFO] [stdout] | --------------- the item `_From` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `ContentType` is imported redundantly [INFO] [stdout] --> src/mail.rs:781:24 [INFO] [stdout] | [INFO] [stdout] 781 | _From, ContentType, ContentTransferEncoding, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 786 | use super::super::*; [INFO] [stdout] | --------------- the item `ContentType` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `ContentTransferEncoding` is imported redundantly [INFO] [stdout] --> src/mail.rs:781:37 [INFO] [stdout] | [INFO] [stdout] 781 | _From, ContentType, ContentTransferEncoding, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 786 | use super::super::*; [INFO] [stdout] | --------------- the item `ContentTransferEncoding` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Date` is imported redundantly [INFO] [stdout] --> src/mail.rs:782:17 [INFO] [stdout] | [INFO] [stdout] 782 | Date, Subject [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 786 | use super::super::*; [INFO] [stdout] | --------------- the item `Date` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Builder` is imported redundantly [INFO] [stdout] --> src/default_impl/cpupool.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | use futures_cpupool::Builder; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] 34 | use super::*; [INFO] [stdout] | -------- the item `Builder` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `rand` is imported redundantly [INFO] [stdout] --> src/default_impl/message_id_gen.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use rand; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:16:1 [INFO] [stdout] | [INFO] [stdout] 16 | extern crate rand; [INFO] [stdout] | ------------------ the item `rand` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/utils.rs:13:36 [INFO] [stdout] | [INFO] [stdout] 13 | pub type SendBoxFuture = Box + Send + 'static>; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 13 | pub type SendBoxFuture = Box + Send + 'static>; [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Send` is imported redundantly [INFO] [stdout] --> src/utils.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use std::marker::Send; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Send` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `chrono` is imported redundantly [INFO] [stdout] --> src/utils.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | use chrono; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:14:1 [INFO] [stdout] | [INFO] [stdout] 14 | extern crate chrono; [INFO] [stdout] | -------------------- the item `chrono` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `rand` is imported redundantly [INFO] [stdout] --> src/mime.rs:2:12 [INFO] [stdout] | [INFO] [stdout] 2 | use rand::{self, Rng}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:16:1 [INFO] [stdout] | [INFO] [stdout] 16 | extern crate rand; [INFO] [stdout] | ------------------ the item `rand` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Default` is imported redundantly [INFO] [stdout] --> src/resource/data.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | default::Default, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Default` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `ToOwned` is imported redundantly [INFO] [stdout] --> src/resource/loading.rs:3:14 [INFO] [stdout] | [INFO] [stdout] 3 | borrow::{ToOwned, Borrow}, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `ToOwned` is already defined here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `rand` is imported redundantly [INFO] [stdout] --> src/default_impl/message_id_gen.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use rand; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/lib.rs:16:1 [INFO] [stdout] | [INFO] [stdout] 16 | extern crate rand; [INFO] [stdout] | ------------------ the item `rand` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/utils.rs:13:36 [INFO] [stdout] | [INFO] [stdout] 13 | pub type SendBoxFuture = Box + Send + 'static>; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 13 | pub type SendBoxFuture = Box + Send + 'static>; [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/error.rs:78:32 [INFO] [stdout] | [INFO] [stdout] 78 | fn cause(&self) -> Option<&Fail> { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 78 | fn cause(&self) -> Option<&dyn Fail> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/error.rs:78:32 [INFO] [stdout] | [INFO] [stdout] 78 | fn cause(&self) -> Option<&Fail> { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 78 | fn cause(&self) -> Option<&dyn Fail> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `chrono::TimeZone::ymd`: use `with_ymd_and_hms()` instead [INFO] [stdout] --> src/mail.rs:885:37 [INFO] [stdout] | [INFO] [stdout] 885 | let provided_date = Utc.ymd(1992, 5, 25).and_hms(23, 41, 12); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `chrono::Date::::and_hms`: Use and_hms_opt() instead [INFO] [stdout] --> src/mail.rs:885:54 [INFO] [stdout] | [INFO] [stdout] 885 | let provided_date = Utc.ymd(1992, 5, 25).and_hms(23, 41, 12); [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/mail.rs:600:17 [INFO] [stdout] | [INFO] [stdout] 600 | let mut headers: &mut HeaderMap = headers; [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: variable does not need to be mutable [INFO] [stdout] --> src/mail.rs:600:17 [INFO] [stdout] | [INFO] [stdout] 600 | let mut headers: &mut HeaderMap = headers; [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: trait `AssertDebug` is never used [INFO] [stdout] --> src/mail.rs:677:11 [INFO] [stdout] | [INFO] [stdout] 677 | trait AssertDebug: Debug {} [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `AssertSend` is never used [INFO] [stdout] --> src/mail.rs:678:11 [INFO] [stdout] | [INFO] [stdout] 678 | trait AssertSend: Send {} [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait `AssertSync` is never used [INFO] [stdout] --> src/mail.rs:679:11 [INFO] [stdout] | [INFO] [stdout] 679 | trait AssertSync: Sync {} [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/resource/loading.rs:184:21 [INFO] [stdout] | [INFO] [stdout] 184 | mem::replace(resource_ref, new_resource.to_resource()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 184 | let _ = mem::replace(resource_ref, new_resource.to_resource()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/mail.rs:466:21 [INFO] [stdout] | [INFO] [stdout] 466 | / mem::replace( [INFO] [stdout] 467 | | &mut self.inner, [INFO] [stdout] 468 | | InnerMailFuture::Loading { [INFO] [stdout] 469 | | mail, ctx, [INFO] [stdout] 470 | | pending: future::join_all(futures) [INFO] [stdout] 471 | | } [INFO] [stdout] 472 | | ); [INFO] [stdout] | |_____________________^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 466 | let _ = mem::replace( [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/mail.rs:478:29 [INFO] [stdout] | [INFO] [stdout] 478 | / ... mem::replace( [INFO] [stdout] 479 | | ... &mut self.inner, [INFO] [stdout] 480 | | ... InnerMailFuture::Loading { mail, pending, ctx } [INFO] [stdout] 481 | | ... ); [INFO] [stdout] | |_______________________^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 478 | let _ = mem::replace( [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/mail.rs:554:9 [INFO] [stdout] | [INFO] [stdout] 554 | mem::replace(resource, Resource::EncData(enc_data)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 554 | let _ = mem::replace(resource, Resource::EncData(enc_data)); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/resource/loading.rs:184:21 [INFO] [stdout] | [INFO] [stdout] 184 | mem::replace(resource_ref, new_resource.to_resource()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 184 | let _ = mem::replace(resource_ref, new_resource.to_resource()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/mail.rs:466:21 [INFO] [stdout] | [INFO] [stdout] 466 | / mem::replace( [INFO] [stdout] 467 | | &mut self.inner, [INFO] [stdout] 468 | | InnerMailFuture::Loading { [INFO] [stdout] 469 | | mail, ctx, [INFO] [stdout] 470 | | pending: future::join_all(futures) [INFO] [stdout] 471 | | } [INFO] [stdout] 472 | | ); [INFO] [stdout] | |_____________________^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 466 | let _ = mem::replace( [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/mail.rs:478:29 [INFO] [stdout] | [INFO] [stdout] 478 | / ... mem::replace( [INFO] [stdout] 479 | | ... &mut self.inner, [INFO] [stdout] 480 | | ... InnerMailFuture::Loading { mail, pending, ctx } [INFO] [stdout] 481 | | ... ); [INFO] [stdout] | |_______________________^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 478 | let _ = mem::replace( [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/mail.rs:554:9 [INFO] [stdout] | [INFO] [stdout] 554 | mem::replace(resource, Resource::EncData(enc_data)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 554 | let _ = mem::replace(resource, Resource::EncData(enc_data)); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 13 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 23 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.57s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: lut v0.1.0-unstable, nom v3.2.1 [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" "1f1ee1acebfb00451f51030344a7a3abed026bbaf018b5470fa635b5cc7505ed", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1f1ee1acebfb00451f51030344a7a3abed026bbaf018b5470fa635b5cc7505ed", kill_on_drop: false }` [INFO] [stdout] 1f1ee1acebfb00451f51030344a7a3abed026bbaf018b5470fa635b5cc7505ed