[INFO] fetching crate msgpack-rs 0.0.1...
[INFO] checking msgpack-rs-0.0.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate msgpack-rs 0.0.1 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate msgpack-rs 0.0.1 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 msgpack-rs 0.0.1
[INFO] finished tweaking crates.io crate msgpack-rs 0.0.1
[INFO] tweaked toml for crates.io crate msgpack-rs 0.0.1 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 39 packages
[INFO] [stderr]       Adding bytes v0.4.12 (latest: v1.6.0)
[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]     Blocking waiting for file lock on package cache
[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] 90c6540cbad13eb1113f5b1dfcaadd480540904cf1d0dbc5d7526c66832dcec4
[INFO] running `Command { std: "docker" "start" "-a" "90c6540cbad13eb1113f5b1dfcaadd480540904cf1d0dbc5d7526c66832dcec4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90c6540cbad13eb1113f5b1dfcaadd480540904cf1d0dbc5d7526c66832dcec4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90c6540cbad13eb1113f5b1dfcaadd480540904cf1d0dbc5d7526c66832dcec4", kill_on_drop: false }`
[INFO] [stdout] 90c6540cbad13eb1113f5b1dfcaadd480540904cf1d0dbc5d7526c66832dcec4
[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] 2b1ed858f938ae648ca36ee0d8a1fc4c271d719b21810ab95e28b6e4d07b3209
[INFO] running `Command { std: "docker" "start" "-a" "2b1ed858f938ae648ca36ee0d8a1fc4c271d719b21810ab95e28b6e4d07b3209", kill_on_drop: false }`
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking msgpack-rs v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `serde` is imported redundantly
[INFO] [stdout]  --> src/de.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use serde;
[INFO] [stdout]   |     ^^^^^ the item `serde` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `DeserializeOwned`
[INFO] [stdout]  --> src/de.rs:7:36
[INFO] [stdout]   |
[INFO] [stdout] 7 | use serde::de::{self, Deserialize, DeserializeOwned, DeserializeSeed, Visitor};
[INFO] [stdout]   |                                    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::forward_to_deserialize_any`
[INFO] [stdout]  --> src/de.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use serde::forward_to_deserialize_any;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde` is imported redundantly
[INFO] [stdout]  --> src/ser/error.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use serde;
[INFO] [stdout]   |     ^^^^^ the item `serde` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/unpack.rs:254:66
[INFO] [stdout]     |
[INFO] [stdout] 254 | pub fn unpack_timestamp32<R: io::Read>(reader: &mut R) -> Result<(u32), UnpackError> {
[INFO] [stdout]     |                                                                  ^   ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 254 - pub fn unpack_timestamp32<R: io::Read>(reader: &mut R) -> Result<(u32), UnpackError> {
[INFO] [stdout] 254 + pub fn unpack_timestamp32<R: io::Read>(reader: &mut R) -> Result<u32, UnpackError> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]  --> src/unpacker.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::iter::Iterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Iterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `float::Float`
[INFO] [stdout]  --> src/value.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub use float::Float;
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `float::Number as FloatNumber`
[INFO] [stdout]  --> src/value.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use float::Number as FloatNumber;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `integer::Integer`
[INFO] [stdout]  --> src/value.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub use integer::Integer;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `integer::Number as IntegerNumber`
[INFO] [stdout]  --> src/value.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub use integer::Number as IntegerNumber;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `chrono` is imported redundantly
[INFO] [stdout]   --> src/value.rs:12:14
[INFO] [stdout]    |
[INFO] [stdout] 12 | use chrono::{self, TimeZone};
[INFO] [stdout]    |              ^^^^ the item `chrono` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/de.rs:29:23
[INFO] [stdout]    |
[INFO] [stdout] 29 |         error::Error::description(self).fmt(f)
[INFO] [stdout]    |                       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/pack_error.rs:18:23
[INFO] [stdout]    |
[INFO] [stdout] 18 |         error::Error::description(self).fmt(f)
[INFO] [stdout]    |                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/ser/error.rs:59:23
[INFO] [stdout]    |
[INFO] [stdout] 59 |         error::Error::description(self).fmt(f)
[INFO] [stdout]    |                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/unpack_error.rs:14:23
[INFO] [stdout]    |
[INFO] [stdout] 14 |         error::Error::description(self).fmt(f)
[INFO] [stdout]    |                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde` is imported redundantly
[INFO] [stdout]  --> src/de.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use serde;
[INFO] [stdout]   |     ^^^^^ the item `serde` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `DeserializeOwned`
[INFO] [stdout]  --> src/de.rs:7:36
[INFO] [stdout]   |
[INFO] [stdout] 7 | use serde::de::{self, Deserialize, DeserializeOwned, DeserializeSeed, Visitor};
[INFO] [stdout]   |                                    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::forward_to_deserialize_any`
[INFO] [stdout]  --> src/de.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use serde::forward_to_deserialize_any;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde` is imported redundantly
[INFO] [stdout]  --> src/ser/error.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use serde;
[INFO] [stdout]   |     ^^^^^ the item `serde` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/unpack.rs:254:66
[INFO] [stdout]     |
[INFO] [stdout] 254 | pub fn unpack_timestamp32<R: io::Read>(reader: &mut R) -> Result<(u32), UnpackError> {
[INFO] [stdout]     |                                                                  ^   ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 254 - pub fn unpack_timestamp32<R: io::Read>(reader: &mut R) -> Result<(u32), UnpackError> {
[INFO] [stdout] 254 + pub fn unpack_timestamp32<R: io::Read>(reader: &mut R) -> Result<u32, UnpackError> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]  --> src/unpacker.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::iter::Iterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Iterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/pack_error.rs:29:32
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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] 29 |     fn cause(&self) -> Option<&dyn error::Error> {
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/unpack_error.rs:26:32
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn cause(&self) -> Option<&dyn error::Error> {
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `float::Float`
[INFO] [stdout]  --> src/value.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub use float::Float;
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `float::Number as FloatNumber`
[INFO] [stdout]  --> src/value.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use float::Number as FloatNumber;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `integer::Integer`
[INFO] [stdout]  --> src/value.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub use integer::Integer;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `integer::Number as IntegerNumber`
[INFO] [stdout]  --> src/value.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub use integer::Number as IntegerNumber;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `chrono` is imported redundantly
[INFO] [stdout]   --> src/value.rs:12:14
[INFO] [stdout]    |
[INFO] [stdout] 12 | use chrono::{self, TimeZone};
[INFO] [stdout]    |              ^^^^ the item `chrono` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/de.rs:29:23
[INFO] [stdout]    |
[INFO] [stdout] 29 |         error::Error::description(self).fmt(f)
[INFO] [stdout]    |                       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/pack_error.rs:18:23
[INFO] [stdout]    |
[INFO] [stdout] 18 |         error::Error::description(self).fmt(f)
[INFO] [stdout]    |                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/ser/error.rs:59:23
[INFO] [stdout]    |
[INFO] [stdout] 59 |         error::Error::description(self).fmt(f)
[INFO] [stdout]    |                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/unpack_error.rs:14:23
[INFO] [stdout]    |
[INFO] [stdout] 14 |         error::Error::description(self).fmt(f)
[INFO] [stdout]    |                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/de.rs:39:37
[INFO] [stdout]    |
[INFO] [stdout] 39 |             UnpackError(ref e) => e.description(),
[INFO] [stdout]    |                                     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/pack_error.rs:29:32
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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] 29 |     fn cause(&self) -> Option<&dyn error::Error> {
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/unpack_error.rs:26:32
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn cause(&self) -> Option<&dyn error::Error> {
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/ser/error.rs:32:35
[INFO] [stdout]    |
[INFO] [stdout] 32 |             PackError(ref e) => e.description(),
[INFO] [stdout]    |                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/de.rs:39:37
[INFO] [stdout]    |
[INFO] [stdout] 39 |             UnpackError(ref e) => e.description(),
[INFO] [stdout]    |                                     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/ser/error.rs:32:35
[INFO] [stdout]    |
[INFO] [stdout] 32 |             PackError(ref e) => e.description(),
[INFO] [stdout]    |                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `chrono::TimeZone::timestamp`: use `timestamp_opt()` instead
[INFO] [stdout]    --> src/value.rs:101:47
[INFO] [stdout]     |
[INFO] [stdout] 101 |                 write!(f, "{}", chrono::Local.timestamp(*sec as i64, *nsec))
[INFO] [stdout]     |                                               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `chrono::TimeZone::timestamp`: use `timestamp_opt()` instead
[INFO] [stdout]    --> src/value.rs:190:47
[INFO] [stdout]     |
[INFO] [stdout] 190 |                 write!(f, "{}", chrono::Local.timestamp(*sec as i64, *nsec))
[INFO] [stdout]     |                                               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Deserialize`
[INFO] [stdout]  --> src/de.rs:7:23
[INFO] [stdout]   |
[INFO] [stdout] 7 | use serde::de::{self, Deserialize, DeserializeOwned, DeserializeSeed, Visitor};
[INFO] [stdout]   |                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple patterns overlap on their endpoints
[INFO] [stdout]    --> src/pack.rs:166:9
[INFO] [stdout]     |
[INFO] [stdout] 162 |         17..=256 => {
[INFO] [stdout]     |         -------- this range overlaps on `256_usize`...
[INFO] [stdout] ...
[INFO] [stdout] 166 |         256..=65536 => {
[INFO] [stdout]     |         ^^^^^^^^^^^ ... with this range
[INFO] [stdout]     |
[INFO] [stdout]     = note: you likely meant to write mutually exclusive ranges
[INFO] [stdout]     = note: `#[warn(overlapping_range_endpoints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `chrono::TimeZone::timestamp`: use `timestamp_opt()` instead
[INFO] [stdout]    --> src/value.rs:101:47
[INFO] [stdout]     |
[INFO] [stdout] 101 |                 write!(f, "{}", chrono::Local.timestamp(*sec as i64, *nsec))
[INFO] [stdout]     |                                               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `chrono::TimeZone::timestamp`: use `timestamp_opt()` instead
[INFO] [stdout]    --> src/value.rs:190:47
[INFO] [stdout]     |
[INFO] [stdout] 190 |                 write!(f, "{}", chrono::Local.timestamp(*sec as i64, *nsec))
[INFO] [stdout]     |                                               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Deserialize`
[INFO] [stdout]  --> src/de.rs:7:23
[INFO] [stdout]   |
[INFO] [stdout] 7 | use serde::de::{self, Deserialize, DeserializeOwned, DeserializeSeed, Visitor};
[INFO] [stdout]   |                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple patterns overlap on their endpoints
[INFO] [stdout]    --> src/pack.rs:166:9
[INFO] [stdout]     |
[INFO] [stdout] 162 |         17..=256 => {
[INFO] [stdout]     |         -------- this range overlaps on `256_usize`...
[INFO] [stdout] ...
[INFO] [stdout] 166 |         256..=65536 => {
[INFO] [stdout]     |         ^^^^^^^^^^^ ... with this range
[INFO] [stdout]     |
[INFO] [stdout]     = note: you likely meant to write mutually exclusive ranges
[INFO] [stdout]     = note: `#[warn(overlapping_range_endpoints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `msgpack` is imported redundantly
[INFO] [stdout]  --> tests/pack.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use msgpack;
[INFO] [stdout]   |     ^^^^^^^ the item `msgpack` 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 `msgpack` is imported redundantly
[INFO] [stdout]  --> tests/packer.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use msgpack;
[INFO] [stdout]   |     ^^^^^^^ the item `msgpack` 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 `msgpack` is imported redundantly
[INFO] [stdout]  --> tests/unpacker.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use msgpack::{self, RefUnpacker, RefValue, Value};
[INFO] [stdout]   |               ^^^^ the item `msgpack` 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 `msgpack` is imported redundantly
[INFO] [stdout]  --> tests/unpack.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use msgpack;
[INFO] [stdout]   |     ^^^^^^^ the item `msgpack` 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 `msgpack` is imported redundantly
[INFO] [stdout]  --> tests/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use msgpack;
[INFO] [stdout]   |     ^^^^^^^ the item `msgpack` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `msgpack` is imported redundantly
[INFO] [stdout]  --> tests/de.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use msgpack::{self, de};
[INFO] [stdout]   |               ^^^^ the item `msgpack` 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 `msgpack` is imported redundantly
[INFO] [stdout]  --> tests/ser.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use msgpack;
[INFO] [stdout]   |     ^^^^^^^ the item `msgpack` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.91s
[INFO] running `Command { std: "docker" "inspect" "2b1ed858f938ae648ca36ee0d8a1fc4c271d719b21810ab95e28b6e4d07b3209", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b1ed858f938ae648ca36ee0d8a1fc4c271d719b21810ab95e28b6e4d07b3209", kill_on_drop: false }`
[INFO] [stdout] 2b1ed858f938ae648ca36ee0d8a1fc4c271d719b21810ab95e28b6e4d07b3209
[INFO] checking msgpack-rs-0.0.1 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate msgpack-rs 0.0.1 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate msgpack-rs 0.0.1 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate msgpack-rs 0.0.1
[INFO] finished tweaking crates.io crate msgpack-rs 0.0.1
[INFO] tweaked toml for crates.io crate msgpack-rs 0.0.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 78bb2fc532ac659d60b532504df135e4d056500ccab43ae1311841723ff22e6e
[INFO] running `Command { std: "docker" "start" "-a" "78bb2fc532ac659d60b532504df135e4d056500ccab43ae1311841723ff22e6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "78bb2fc532ac659d60b532504df135e4d056500ccab43ae1311841723ff22e6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78bb2fc532ac659d60b532504df135e4d056500ccab43ae1311841723ff22e6e", kill_on_drop: false }`
[INFO] [stdout] 78bb2fc532ac659d60b532504df135e4d056500ccab43ae1311841723ff22e6e
[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" "-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fc1dfa06553eb236d83d04b3f0456dee97fdd43e21077f26e54b20db6bbc6633
[INFO] running `Command { std: "docker" "start" "-a" "fc1dfa06553eb236d83d04b3f0456dee97fdd43e21077f26e54b20db6bbc6633", kill_on_drop: false }`
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking msgpack-rs v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `serde` is imported redundantly
[INFO] [stdout]  --> src/de.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use serde;
[INFO] [stdout]   |     ^^^^^ the item `serde` 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 `serde` is imported redundantly
[INFO] [stdout]  --> src/de.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use serde;
[INFO] [stdout]   |     ^^^^^ the item `serde` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `DeserializeOwned`
[INFO] [stdout]  --> src/de.rs:7:36
[INFO] [stdout]   |
[INFO] [stdout] 7 | use serde::de::{self, Deserialize, DeserializeOwned, DeserializeSeed, Visitor};
[INFO] [stdout]   |                                    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::forward_to_deserialize_any`
[INFO] [stdout]  --> src/de.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use serde::forward_to_deserialize_any;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde` is imported redundantly
[INFO] [stdout]  --> src/ser/error.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use serde;
[INFO] [stdout]   |     ^^^^^ the item `serde` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/unpack.rs:254:66
[INFO] [stdout]     |
[INFO] [stdout] 254 | pub fn unpack_timestamp32<R: io::Read>(reader: &mut R) -> Result<(u32), UnpackError> {
[INFO] [stdout]     |                                                                  ^   ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 254 - pub fn unpack_timestamp32<R: io::Read>(reader: &mut R) -> Result<(u32), UnpackError> {
[INFO] [stdout] 254 + pub fn unpack_timestamp32<R: io::Read>(reader: &mut R) -> Result<u32, UnpackError> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]  --> src/unpacker.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::iter::Iterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Iterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `float::Float`
[INFO] [stdout]  --> src/value.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub use float::Float;
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `float::Number as FloatNumber`
[INFO] [stdout]  --> src/value.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use float::Number as FloatNumber;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `integer::Integer`
[INFO] [stdout]  --> src/value.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub use integer::Integer;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `DeserializeOwned`
[INFO] [stdout]  --> src/de.rs:7:36
[INFO] [stdout]   |
[INFO] [stdout] 7 | use serde::de::{self, Deserialize, DeserializeOwned, DeserializeSeed, Visitor};
[INFO] [stdout]   |                                    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `integer::Number as IntegerNumber`
[INFO] [stdout]  --> src/value.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub use integer::Number as IntegerNumber;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::forward_to_deserialize_any`
[INFO] [stdout]  --> src/de.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use serde::forward_to_deserialize_any;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `chrono` is imported redundantly
[INFO] [stdout]   --> src/value.rs:12:14
[INFO] [stdout]    |
[INFO] [stdout] 12 | use chrono::{self, TimeZone};
[INFO] [stdout]    |              ^^^^ the item `chrono` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde` is imported redundantly
[INFO] [stdout]  --> src/ser/error.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use serde;
[INFO] [stdout]   |     ^^^^^ the item `serde` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/unpack.rs:254:66
[INFO] [stdout]     |
[INFO] [stdout] 254 | pub fn unpack_timestamp32<R: io::Read>(reader: &mut R) -> Result<(u32), UnpackError> {
[INFO] [stdout]     |                                                                  ^   ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 254 - pub fn unpack_timestamp32<R: io::Read>(reader: &mut R) -> Result<(u32), UnpackError> {
[INFO] [stdout] 254 + pub fn unpack_timestamp32<R: io::Read>(reader: &mut R) -> Result<u32, UnpackError> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Iterator` is imported redundantly
[INFO] [stdout]  --> src/unpacker.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::iter::Iterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Iterator` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `float::Float`
[INFO] [stdout]  --> src/value.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub use float::Float;
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `float::Number as FloatNumber`
[INFO] [stdout]  --> src/value.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use float::Number as FloatNumber;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `integer::Integer`
[INFO] [stdout]  --> src/value.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub use integer::Integer;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `integer::Number as IntegerNumber`
[INFO] [stdout]  --> src/value.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub use integer::Number as IntegerNumber;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `chrono` is imported redundantly
[INFO] [stdout]   --> src/value.rs:12:14
[INFO] [stdout]    |
[INFO] [stdout] 12 | use chrono::{self, TimeZone};
[INFO] [stdout]    |              ^^^^ the item `chrono` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/de.rs:29:23
[INFO] [stdout]    |
[INFO] [stdout] 29 |         error::Error::description(self).fmt(f)
[INFO] [stdout]    |                       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/de.rs:29:23
[INFO] [stdout]    |
[INFO] [stdout] 29 |         error::Error::description(self).fmt(f)
[INFO] [stdout]    |                       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/pack_error.rs:18:23
[INFO] [stdout]    |
[INFO] [stdout] 18 |         error::Error::description(self).fmt(f)
[INFO] [stdout]    |                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/ser/error.rs:59:23
[INFO] [stdout]    |
[INFO] [stdout] 59 |         error::Error::description(self).fmt(f)
[INFO] [stdout]    |                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/unpack_error.rs:14:23
[INFO] [stdout]    |
[INFO] [stdout] 14 |         error::Error::description(self).fmt(f)
[INFO] [stdout]    |                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/pack_error.rs:18:23
[INFO] [stdout]    |
[INFO] [stdout] 18 |         error::Error::description(self).fmt(f)
[INFO] [stdout]    |                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/ser/error.rs:59:23
[INFO] [stdout]    |
[INFO] [stdout] 59 |         error::Error::description(self).fmt(f)
[INFO] [stdout]    |                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/unpack_error.rs:14:23
[INFO] [stdout]    |
[INFO] [stdout] 14 |         error::Error::description(self).fmt(f)
[INFO] [stdout]    |                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/pack_error.rs:29:32
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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] 29 |     fn cause(&self) -> Option<&dyn error::Error> {
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/pack_error.rs:29:32
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[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] 29 |     fn cause(&self) -> Option<&dyn error::Error> {
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/unpack_error.rs:26:32
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn cause(&self) -> Option<&dyn error::Error> {
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/unpack_error.rs:26:32
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn cause(&self) -> Option<&dyn error::Error> {
[INFO] [stdout]    |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/de.rs:39:37
[INFO] [stdout]    |
[INFO] [stdout] 39 |             UnpackError(ref e) => e.description(),
[INFO] [stdout]    |                                     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/de.rs:39:37
[INFO] [stdout]    |
[INFO] [stdout] 39 |             UnpackError(ref e) => e.description(),
[INFO] [stdout]    |                                     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/ser/error.rs:32:35
[INFO] [stdout]    |
[INFO] [stdout] 32 |             PackError(ref e) => e.description(),
[INFO] [stdout]    |                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/ser/error.rs:32:35
[INFO] [stdout]    |
[INFO] [stdout] 32 |             PackError(ref e) => e.description(),
[INFO] [stdout]    |                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `chrono::TimeZone::timestamp`: use `timestamp_opt()` instead
[INFO] [stdout]    --> src/value.rs:101:47
[INFO] [stdout]     |
[INFO] [stdout] 101 |                 write!(f, "{}", chrono::Local.timestamp(*sec as i64, *nsec))
[INFO] [stdout]     |                                               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `chrono::TimeZone::timestamp`: use `timestamp_opt()` instead
[INFO] [stdout]    --> src/value.rs:101:47
[INFO] [stdout]     |
[INFO] [stdout] 101 |                 write!(f, "{}", chrono::Local.timestamp(*sec as i64, *nsec))
[INFO] [stdout]     |                                               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `chrono::TimeZone::timestamp`: use `timestamp_opt()` instead
[INFO] [stdout]    --> src/value.rs:190:47
[INFO] [stdout]     |
[INFO] [stdout] 190 |                 write!(f, "{}", chrono::Local.timestamp(*sec as i64, *nsec))
[INFO] [stdout]     |                                               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `chrono::TimeZone::timestamp`: use `timestamp_opt()` instead
[INFO] [stdout]    --> src/value.rs:190:47
[INFO] [stdout]     |
[INFO] [stdout] 190 |                 write!(f, "{}", chrono::Local.timestamp(*sec as i64, *nsec))
[INFO] [stdout]     |                                               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Deserialize`
[INFO] [stdout]  --> src/de.rs:7:23
[INFO] [stdout]   |
[INFO] [stdout] 7 | use serde::de::{self, Deserialize, DeserializeOwned, DeserializeSeed, Visitor};
[INFO] [stdout]   |                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Deserialize`
[INFO] [stdout]  --> src/de.rs:7:23
[INFO] [stdout]   |
[INFO] [stdout] 7 | use serde::de::{self, Deserialize, DeserializeOwned, DeserializeSeed, Visitor};
[INFO] [stdout]   |                       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple patterns overlap on their endpoints
[INFO] [stdout]    --> src/pack.rs:166:9
[INFO] [stdout]     |
[INFO] [stdout] 162 |         17..=256 => {
[INFO] [stdout]     |         -------- this range overlaps on `256_usize`...
[INFO] [stdout] ...
[INFO] [stdout] 166 |         256..=65536 => {
[INFO] [stdout]     |         ^^^^^^^^^^^ ... with this range
[INFO] [stdout]     |
[INFO] [stdout]     = note: you likely meant to write mutually exclusive ranges
[INFO] [stdout]     = note: `#[warn(overlapping_range_endpoints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple patterns overlap on their endpoints
[INFO] [stdout]    --> src/pack.rs:166:9
[INFO] [stdout]     |
[INFO] [stdout] 162 |         17..=256 => {
[INFO] [stdout]     |         -------- this range overlaps on `256_usize`...
[INFO] [stdout] ...
[INFO] [stdout] 166 |         256..=65536 => {
[INFO] [stdout]     |         ^^^^^^^^^^^ ... with this range
[INFO] [stdout]     |
[INFO] [stdout]     = note: you likely meant to write mutually exclusive ranges
[INFO] [stdout]     = note: `#[warn(overlapping_range_endpoints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `msgpack` is imported redundantly
[INFO] [stdout]  --> tests/pack.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use msgpack;
[INFO] [stdout]   |     ^^^^^^^ the item `msgpack` 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 `msgpack` is imported redundantly
[INFO] [stdout]  --> tests/packer.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use msgpack;
[INFO] [stdout]   |     ^^^^^^^ the item `msgpack` 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 `msgpack` is imported redundantly
[INFO] [stdout]  --> tests/ser.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use msgpack;
[INFO] [stdout]   |     ^^^^^^^ the item `msgpack` 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 `msgpack` is imported redundantly
[INFO] [stdout]  --> tests/de.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use msgpack::{self, de};
[INFO] [stdout]   |               ^^^^ the item `msgpack` 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 `msgpack` is imported redundantly
[INFO] [stdout]  --> tests/unpacker.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use msgpack::{self, RefUnpacker, RefValue, Value};
[INFO] [stdout]   |               ^^^^ the item `msgpack` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `msgpack` is imported redundantly
[INFO] [stdout]  --> tests/unpack.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use msgpack;
[INFO] [stdout]   |     ^^^^^^^ the item `msgpack` 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 `msgpack` is imported redundantly
[INFO] [stdout]  --> tests/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use msgpack;
[INFO] [stdout]   |     ^^^^^^^ the item `msgpack` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.97s
[INFO] running `Command { std: "docker" "inspect" "fc1dfa06553eb236d83d04b3f0456dee97fdd43e21077f26e54b20db6bbc6633", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc1dfa06553eb236d83d04b3f0456dee97fdd43e21077f26e54b20db6bbc6633", kill_on_drop: false }`
[INFO] [stdout] fc1dfa06553eb236d83d04b3f0456dee97fdd43e21077f26e54b20db6bbc6633