[INFO] fetching crate sincere 0.7.0-alpha.1...
[INFO] checking sincere-0.7.0-alpha.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate sincere 0.7.0-alpha.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate sincere 0.7.0-alpha.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 sincere 0.7.0-alpha.1
[INFO] finished tweaking crates.io crate sincere 0.7.0-alpha.1
[INFO] tweaked toml for crates.io crate sincere 0.7.0-alpha.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate sincere 0.7.0-alpha.1 already has a lockfile, it will not be regenerated
[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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] b184cbf08384b03923b8c45860c2cc9691fdaa9ef77e5b51ebffe5acc305c67b
[INFO] running `Command { std: "docker" "start" "-a" "b184cbf08384b03923b8c45860c2cc9691fdaa9ef77e5b51ebffe5acc305c67b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b184cbf08384b03923b8c45860c2cc9691fdaa9ef77e5b51ebffe5acc305c67b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b184cbf08384b03923b8c45860c2cc9691fdaa9ef77e5b51ebffe5acc305c67b", kill_on_drop: false }`
[INFO] [stdout] b184cbf08384b03923b8c45860c2cc9691fdaa9ef77e5b51ebffe5acc305c67b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 5cbe375063ee7956b618814571c82a14a5d95cdb861f117034d4f6388805ecb8
[INFO] running `Command { std: "docker" "start" "-a" "5cbe375063ee7956b618814571c82a14a5d95cdb861f117034d4f6388805ecb8", kill_on_drop: false }`
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[INFO] [stdout] warning: the item `hyper` is imported redundantly
[INFO] [stdout]   --> src/app/mod.rs:2:13
[INFO] [stdout]    |
[INFO] [stdout] 2  | use hyper::{self, Server, Request, Response, Body, Method};
[INFO] [stdout]    |             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | extern crate hyper;
[INFO] [stdout]    | ------------------- the item `hyper` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `hyper` is imported redundantly
[INFO] [stdout]   --> src/app/context.rs:2:5
[INFO] [stdout]    |
[INFO] [stdout] 2  | use hyper;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | extern crate hyper;
[INFO] [stdout]    | ------------------- the item `hyper` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `httparse` is imported redundantly
[INFO] [stdout]   --> src/error.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | use httparse;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:43:1
[INFO] [stdout]    |
[INFO] [stdout] 43 | extern crate httparse;
[INFO] [stdout]    | ---------------------- the item `httparse` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `hyper` is imported redundantly
[INFO] [stdout]   --> src/error.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use hyper;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | extern crate hyper;
[INFO] [stdout]    | ------------------- the item `hyper` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]   --> src/error.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use serde_json;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:46:1
[INFO] [stdout]    |
[INFO] [stdout] 46 | extern crate serde_json;
[INFO] [stdout]    | ------------------------ the item `serde_json` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `url` is imported redundantly
[INFO] [stdout]   --> src/error.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use url;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:48:1
[INFO] [stdout]    |
[INFO] [stdout] 48 | extern crate url;
[INFO] [stdout]    | ----------------- the item `url` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rand` is imported redundantly
[INFO] [stdout]   --> src/http/plus/mod.rs:2:12
[INFO] [stdout]    |
[INFO] [stdout] 2  | use rand::{self, Rng};
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:45:1
[INFO] [stdout]    |
[INFO] [stdout] 45 | extern crate rand;
[INFO] [stdout]    | ------------------ the item `rand` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mime_guess` is imported redundantly
[INFO] [stdout]   --> src/http/plus/client/multipart.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | use mime_guess;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:52:1
[INFO] [stdout]    |
[INFO] [stdout] 52 | extern crate mime_guess;
[INFO] [stdout]    | ------------------------ the item `mime_guess` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mime` is imported redundantly
[INFO] [stdout]   --> src/http/plus/server/mod.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout] 5  | use mime;
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:51:1
[INFO] [stdout]    |
[INFO] [stdout] 51 | extern crate mime;
[INFO] [stdout]    | ------------------ the item `mime` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `hyper` is imported redundantly
[INFO] [stdout]   --> src/http/request.rs:4:13
[INFO] [stdout]    |
[INFO] [stdout] 4  | use hyper::{self, HeaderMap, Method, Uri, Version};
[INFO] [stdout]    |             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | extern crate hyper;
[INFO] [stdout]    | ------------------- the item `hyper` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mime` is imported redundantly
[INFO] [stdout]   --> src/http/request.rs:7:12
[INFO] [stdout]    |
[INFO] [stdout] 7  | use mime::{self, Mime};
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:51:1
[INFO] [stdout]    |
[INFO] [stdout] 51 | extern crate mime;
[INFO] [stdout]    | ------------------ the item `mime` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]   --> src/http/request.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | use serde_json;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:46:1
[INFO] [stdout]    |
[INFO] [stdout] 46 | extern crate serde_json;
[INFO] [stdout]    | ------------------------ the item `serde_json` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]   --> src/http/response.rs:6:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | use serde_json;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:46:1
[INFO] [stdout]    |
[INFO] [stdout] 46 | extern crate serde_json;
[INFO] [stdout]    | ------------------------ the item `serde_json` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `hyper` is imported redundantly
[INFO] [stdout]   --> src/http/response.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | use hyper;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | extern crate hyper;
[INFO] [stdout]    | ------------------- the item `hyper` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `hyper` is imported redundantly
[INFO] [stdout]   --> src/app/mod.rs:2:13
[INFO] [stdout]    |
[INFO] [stdout] 2  | use hyper::{self, Server, Request, Response, Body, Method};
[INFO] [stdout]    |             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | extern crate hyper;
[INFO] [stdout]    | ------------------- the item `hyper` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `hyper` is imported redundantly
[INFO] [stdout]   --> src/app/context.rs:2:5
[INFO] [stdout]    |
[INFO] [stdout] 2  | use hyper;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | extern crate hyper;
[INFO] [stdout]    | ------------------- the item `hyper` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `httparse` is imported redundantly
[INFO] [stdout]   --> src/error.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | use httparse;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:43:1
[INFO] [stdout]    |
[INFO] [stdout] 43 | extern crate httparse;
[INFO] [stdout]    | ---------------------- the item `httparse` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `hyper` is imported redundantly
[INFO] [stdout]   --> src/error.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use hyper;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | extern crate hyper;
[INFO] [stdout]    | ------------------- the item `hyper` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]   --> src/error.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use serde_json;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:46:1
[INFO] [stdout]    |
[INFO] [stdout] 46 | extern crate serde_json;
[INFO] [stdout]    | ------------------------ the item `serde_json` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `url` is imported redundantly
[INFO] [stdout]   --> src/error.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use url;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:48:1
[INFO] [stdout]    |
[INFO] [stdout] 48 | extern crate url;
[INFO] [stdout]    | ----------------- the item `url` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rand` is imported redundantly
[INFO] [stdout]   --> src/http/plus/mod.rs:2:12
[INFO] [stdout]    |
[INFO] [stdout] 2  | use rand::{self, Rng};
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:45:1
[INFO] [stdout]    |
[INFO] [stdout] 45 | extern crate rand;
[INFO] [stdout]    | ------------------ the item `rand` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mime_guess` is imported redundantly
[INFO] [stdout]   --> src/http/plus/client/multipart.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | use mime_guess;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:52:1
[INFO] [stdout]    |
[INFO] [stdout] 52 | extern crate mime_guess;
[INFO] [stdout]    | ------------------------ the item `mime_guess` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mime` is imported redundantly
[INFO] [stdout]   --> src/http/plus/server/mod.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout] 5  | use mime;
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:51:1
[INFO] [stdout]    |
[INFO] [stdout] 51 | extern crate mime;
[INFO] [stdout]    | ------------------ the item `mime` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `hyper` is imported redundantly
[INFO] [stdout]   --> src/http/request.rs:4:13
[INFO] [stdout]    |
[INFO] [stdout] 4  | use hyper::{self, HeaderMap, Method, Uri, Version};
[INFO] [stdout]    |             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | extern crate hyper;
[INFO] [stdout]    | ------------------- the item `hyper` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mime` is imported redundantly
[INFO] [stdout]   --> src/http/request.rs:7:12
[INFO] [stdout]    |
[INFO] [stdout] 7  | use mime::{self, Mime};
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:51:1
[INFO] [stdout]    |
[INFO] [stdout] 51 | extern crate mime;
[INFO] [stdout]    | ------------------ the item `mime` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]   --> src/http/request.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | use serde_json;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:46:1
[INFO] [stdout]    |
[INFO] [stdout] 46 | extern crate serde_json;
[INFO] [stdout]    | ------------------------ the item `serde_json` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]   --> src/http/response.rs:6:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | use serde_json;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:46:1
[INFO] [stdout]    |
[INFO] [stdout] 46 | extern crate serde_json;
[INFO] [stdout]    | ------------------------ the item `serde_json` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `hyper` is imported redundantly
[INFO] [stdout]   --> src/http/response.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | use hyper;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | extern crate hyper;
[INFO] [stdout]    | ------------------- the item `hyper` is already imported here
[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/error.rs:90:44
[INFO] [stdout]    |
[INFO] [stdout] 90 |             Error::IoError(ref err) => err.description(),
[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/error.rs:91:46
[INFO] [stdout]    |
[INFO] [stdout] 91 |             Error::JsonError(ref err) => err.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/error.rs:92:55
[INFO] [stdout]    |
[INFO] [stdout] 92 |             Error::ReceiveSocketError(ref err) => err.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/error.rs:93:50
[INFO] [stdout]    |
[INFO] [stdout] 93 |             Error::FromUtf8Error(ref err) => err.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/error.rs:94:51
[INFO] [stdout]    |
[INFO] [stdout] 94 |             Error::HttpParseError(ref err) => err.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/error.rs:95:50
[INFO] [stdout]    |
[INFO] [stdout] 95 |             Error::ParseIntError(ref err) => err.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/error.rs:96:47
[INFO] [stdout]    |
[INFO] [stdout] 96 |             Error::HyperError(ref err) => err.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/error.rs:97:50
[INFO] [stdout]    |
[INFO] [stdout] 97 |             Error::UrlParseError(ref err) => err.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/error.rs:90:44
[INFO] [stdout]    |
[INFO] [stdout] 90 |             Error::IoError(ref err) => err.description(),
[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/error.rs:91:46
[INFO] [stdout]    |
[INFO] [stdout] 91 |             Error::JsonError(ref err) => err.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/error.rs:92:55
[INFO] [stdout]    |
[INFO] [stdout] 92 |             Error::ReceiveSocketError(ref err) => err.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/error.rs:93:50
[INFO] [stdout]    |
[INFO] [stdout] 93 |             Error::FromUtf8Error(ref err) => err.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/error.rs:94:51
[INFO] [stdout]    |
[INFO] [stdout] 94 |             Error::HttpParseError(ref err) => err.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/error.rs:95:50
[INFO] [stdout]    |
[INFO] [stdout] 95 |             Error::ParseIntError(ref err) => err.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/error.rs:96:47
[INFO] [stdout]    |
[INFO] [stdout] 96 |             Error::HyperError(ref err) => err.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/error.rs:97:50
[INFO] [stdout]    |
[INFO] [stdout] 97 |             Error::UrlParseError(ref err) => err.description(),
[INFO] [stdout]    |                                                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `version` is never read
[INFO] [stdout]   --> src/http/request.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct Request {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 19 |     version: Version,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Request` 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: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `version` is never read
[INFO] [stdout]   --> src/http/request.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct Request {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 19 |     version: Version,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Request` 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: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 39.89s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nson v0.3.6
[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" "5cbe375063ee7956b618814571c82a14a5d95cdb861f117034d4f6388805ecb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cbe375063ee7956b618814571c82a14a5d95cdb861f117034d4f6388805ecb8", kill_on_drop: false }`
[INFO] [stdout] 5cbe375063ee7956b618814571c82a14a5d95cdb861f117034d4f6388805ecb8
[INFO] checking sincere-0.7.0-alpha.1 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate sincere 0.7.0-alpha.1 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate sincere 0.7.0-alpha.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 sincere 0.7.0-alpha.1
[INFO] finished tweaking crates.io crate sincere 0.7.0-alpha.1
[INFO] tweaked toml for crates.io crate sincere 0.7.0-alpha.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate sincere 0.7.0-alpha.1 already has a lockfile, it will not be regenerated
[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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 15f9ef21ebec9a8eac1318ed91821de58df3fe1fb68231123ed4bd3dc83c52b8
[INFO] running `Command { std: "docker" "start" "-a" "15f9ef21ebec9a8eac1318ed91821de58df3fe1fb68231123ed4bd3dc83c52b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15f9ef21ebec9a8eac1318ed91821de58df3fe1fb68231123ed4bd3dc83c52b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15f9ef21ebec9a8eac1318ed91821de58df3fe1fb68231123ed4bd3dc83c52b8", kill_on_drop: false }`
[INFO] [stdout] 15f9ef21ebec9a8eac1318ed91821de58df3fe1fb68231123ed4bd3dc83c52b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] e9a0b42f4249a0b86b1251c95289c36850a2f0d2f42e1765c1db01b485520616
[INFO] running `Command { std: "docker" "start" "-a" "e9a0b42f4249a0b86b1251c95289c36850a2f0d2f42e1765c1db01b485520616", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]     Checking fnv v1.0.6
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[INFO] [stderr]     Checking bytes v0.5.3
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking futures-core v0.3.1
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling indexmap v1.3.0
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]     Checking arc-swap v0.4.4
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[INFO] [stderr]     Checking futures-sink v0.3.1
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[INFO] [stderr]    Compiling httparse v1.3.4
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[INFO] [stderr]     Checking pin-utils v0.1.0-alpha.4
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[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking futures-util v0.3.1
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[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]    Compiling mime_guess v2.0.1
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[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]     Checking serde_bytes v0.11.3
[INFO] [stderr]    Compiling tokio-macros v0.2.0
[INFO] [stderr]    Compiling pin-project-internal v0.4.6
[INFO] [stderr]    Compiling serde_derive v1.0.103
[INFO] [stderr]     Checking tokio v0.2.4
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[INFO] [stderr]     Checking sincere v0.7.0-alpha.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `hyper` is imported redundantly
[INFO] [stdout]   --> src/app/mod.rs:2:13
[INFO] [stdout]    |
[INFO] [stdout] 2  | use hyper::{self, Server, Request, Response, Body, Method};
[INFO] [stdout]    |             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | extern crate hyper;
[INFO] [stdout]    | ------------------- the item `hyper` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `hyper` is imported redundantly
[INFO] [stdout]   --> src/app/context.rs:2:5
[INFO] [stdout]    |
[INFO] [stdout] 2  | use hyper;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | extern crate hyper;
[INFO] [stdout]    | ------------------- the item `hyper` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `httparse` is imported redundantly
[INFO] [stdout]   --> src/error.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | use httparse;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:43:1
[INFO] [stdout]    |
[INFO] [stdout] 43 | extern crate httparse;
[INFO] [stdout]    | ---------------------- the item `httparse` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `hyper` is imported redundantly
[INFO] [stdout]   --> src/error.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use hyper;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | extern crate hyper;
[INFO] [stdout]    | ------------------- the item `hyper` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]   --> src/error.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use serde_json;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:46:1
[INFO] [stdout]    |
[INFO] [stdout] 46 | extern crate serde_json;
[INFO] [stdout]    | ------------------------ the item `serde_json` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `url` is imported redundantly
[INFO] [stdout]   --> src/error.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use url;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:48:1
[INFO] [stdout]    |
[INFO] [stdout] 48 | extern crate url;
[INFO] [stdout]    | ----------------- the item `url` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rand` is imported redundantly
[INFO] [stdout]   --> src/http/plus/mod.rs:2:12
[INFO] [stdout]    |
[INFO] [stdout] 2  | use rand::{self, Rng};
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:45:1
[INFO] [stdout]    |
[INFO] [stdout] 45 | extern crate rand;
[INFO] [stdout]    | ------------------ the item `rand` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mime_guess` is imported redundantly
[INFO] [stdout]   --> src/http/plus/client/multipart.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | use mime_guess;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:52:1
[INFO] [stdout]    |
[INFO] [stdout] 52 | extern crate mime_guess;
[INFO] [stdout]    | ------------------------ the item `mime_guess` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mime` is imported redundantly
[INFO] [stdout]   --> src/http/plus/server/mod.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout] 5  | use mime;
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:51:1
[INFO] [stdout]    |
[INFO] [stdout] 51 | extern crate mime;
[INFO] [stdout]    | ------------------ the item `mime` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `hyper` is imported redundantly
[INFO] [stdout]   --> src/http/request.rs:4:13
[INFO] [stdout]    |
[INFO] [stdout] 4  | use hyper::{self, HeaderMap, Method, Uri, Version};
[INFO] [stdout]    |             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | extern crate hyper;
[INFO] [stdout]    | ------------------- the item `hyper` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mime` is imported redundantly
[INFO] [stdout]   --> src/http/request.rs:7:12
[INFO] [stdout]    |
[INFO] [stdout] 7  | use mime::{self, Mime};
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:51:1
[INFO] [stdout]    |
[INFO] [stdout] 51 | extern crate mime;
[INFO] [stdout]    | ------------------ the item `mime` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]   --> src/http/request.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | use serde_json;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:46:1
[INFO] [stdout]    |
[INFO] [stdout] 46 | extern crate serde_json;
[INFO] [stdout]    | ------------------------ the item `serde_json` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]   --> src/http/response.rs:6:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | use serde_json;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:46:1
[INFO] [stdout]    |
[INFO] [stdout] 46 | extern crate serde_json;
[INFO] [stdout]    | ------------------------ the item `serde_json` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `hyper` is imported redundantly
[INFO] [stdout]   --> src/http/response.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | use hyper;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | extern crate hyper;
[INFO] [stdout]    | ------------------- the item `hyper` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `hyper` is imported redundantly
[INFO] [stdout]   --> src/app/mod.rs:2:13
[INFO] [stdout]    |
[INFO] [stdout] 2  | use hyper::{self, Server, Request, Response, Body, Method};
[INFO] [stdout]    |             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | extern crate hyper;
[INFO] [stdout]    | ------------------- the item `hyper` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `hyper` is imported redundantly
[INFO] [stdout]   --> src/app/context.rs:2:5
[INFO] [stdout]    |
[INFO] [stdout] 2  | use hyper;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | extern crate hyper;
[INFO] [stdout]    | ------------------- the item `hyper` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `httparse` is imported redundantly
[INFO] [stdout]   --> src/error.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | use httparse;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:43:1
[INFO] [stdout]    |
[INFO] [stdout] 43 | extern crate httparse;
[INFO] [stdout]    | ---------------------- the item `httparse` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `hyper` is imported redundantly
[INFO] [stdout]   --> src/error.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use hyper;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | extern crate hyper;
[INFO] [stdout]    | ------------------- the item `hyper` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]   --> src/error.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use serde_json;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:46:1
[INFO] [stdout]    |
[INFO] [stdout] 46 | extern crate serde_json;
[INFO] [stdout]    | ------------------------ the item `serde_json` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `url` is imported redundantly
[INFO] [stdout]   --> src/error.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use url;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:48:1
[INFO] [stdout]    |
[INFO] [stdout] 48 | extern crate url;
[INFO] [stdout]    | ----------------- the item `url` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rand` is imported redundantly
[INFO] [stdout]   --> src/http/plus/mod.rs:2:12
[INFO] [stdout]    |
[INFO] [stdout] 2  | use rand::{self, Rng};
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:45:1
[INFO] [stdout]    |
[INFO] [stdout] 45 | extern crate rand;
[INFO] [stdout]    | ------------------ the item `rand` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mime_guess` is imported redundantly
[INFO] [stdout]   --> src/http/plus/client/multipart.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | use mime_guess;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:52:1
[INFO] [stdout]    |
[INFO] [stdout] 52 | extern crate mime_guess;
[INFO] [stdout]    | ------------------------ the item `mime_guess` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mime` is imported redundantly
[INFO] [stdout]   --> src/http/plus/server/mod.rs:5:5
[INFO] [stdout]    |
[INFO] [stdout] 5  | use mime;
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:51:1
[INFO] [stdout]    |
[INFO] [stdout] 51 | extern crate mime;
[INFO] [stdout]    | ------------------ the item `mime` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `hyper` is imported redundantly
[INFO] [stdout]   --> src/http/request.rs:4:13
[INFO] [stdout]    |
[INFO] [stdout] 4  | use hyper::{self, HeaderMap, Method, Uri, Version};
[INFO] [stdout]    |             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | extern crate hyper;
[INFO] [stdout]    | ------------------- the item `hyper` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mime` is imported redundantly
[INFO] [stdout]   --> src/http/request.rs:7:12
[INFO] [stdout]    |
[INFO] [stdout] 7  | use mime::{self, Mime};
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:51:1
[INFO] [stdout]    |
[INFO] [stdout] 51 | extern crate mime;
[INFO] [stdout]    | ------------------ the item `mime` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]   --> src/http/request.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | use serde_json;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:46:1
[INFO] [stdout]    |
[INFO] [stdout] 46 | extern crate serde_json;
[INFO] [stdout]    | ------------------------ the item `serde_json` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]   --> src/http/response.rs:6:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | use serde_json;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:46:1
[INFO] [stdout]    |
[INFO] [stdout] 46 | extern crate serde_json;
[INFO] [stdout]    | ------------------------ the item `serde_json` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `hyper` is imported redundantly
[INFO] [stdout]   --> src/http/response.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | use hyper;
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:49:1
[INFO] [stdout]    |
[INFO] [stdout] 49 | extern crate hyper;
[INFO] [stdout]    | ------------------- the item `hyper` is already imported here
[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/error.rs:90:44
[INFO] [stdout]    |
[INFO] [stdout] 90 |             Error::IoError(ref err) => err.description(),
[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/error.rs:91:46
[INFO] [stdout]    |
[INFO] [stdout] 91 |             Error::JsonError(ref err) => err.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/error.rs:92:55
[INFO] [stdout]    |
[INFO] [stdout] 92 |             Error::ReceiveSocketError(ref err) => err.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/error.rs:93:50
[INFO] [stdout]    |
[INFO] [stdout] 93 |             Error::FromUtf8Error(ref err) => err.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/error.rs:94:51
[INFO] [stdout]    |
[INFO] [stdout] 94 |             Error::HttpParseError(ref err) => err.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/error.rs:95:50
[INFO] [stdout]    |
[INFO] [stdout] 95 |             Error::ParseIntError(ref err) => err.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/error.rs:96:47
[INFO] [stdout]    |
[INFO] [stdout] 96 |             Error::HyperError(ref err) => err.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/error.rs:97:50
[INFO] [stdout]    |
[INFO] [stdout] 97 |             Error::UrlParseError(ref err) => err.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/error.rs:90:44
[INFO] [stdout]    |
[INFO] [stdout] 90 |             Error::IoError(ref err) => err.description(),
[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/error.rs:91:46
[INFO] [stdout]    |
[INFO] [stdout] 91 |             Error::JsonError(ref err) => err.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/error.rs:92:55
[INFO] [stdout]    |
[INFO] [stdout] 92 |             Error::ReceiveSocketError(ref err) => err.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/error.rs:93:50
[INFO] [stdout]    |
[INFO] [stdout] 93 |             Error::FromUtf8Error(ref err) => err.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/error.rs:94:51
[INFO] [stdout]    |
[INFO] [stdout] 94 |             Error::HttpParseError(ref err) => err.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/error.rs:95:50
[INFO] [stdout]    |
[INFO] [stdout] 95 |             Error::ParseIntError(ref err) => err.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/error.rs:96:47
[INFO] [stdout]    |
[INFO] [stdout] 96 |             Error::HyperError(ref err) => err.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/error.rs:97:50
[INFO] [stdout]    |
[INFO] [stdout] 97 |             Error::UrlParseError(ref err) => err.description(),
[INFO] [stdout]    |                                                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `version` is never read
[INFO] [stdout]   --> src/http/request.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct Request {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 19 |     version: Version,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Request` 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: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `version` is never read
[INFO] [stdout]   --> src/http/request.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub struct Request {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 19 |     version: Version,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Request` 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: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 43.99s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nson v0.3.6
[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" "e9a0b42f4249a0b86b1251c95289c36850a2f0d2f42e1765c1db01b485520616", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9a0b42f4249a0b86b1251c95289c36850a2f0d2f42e1765c1db01b485520616", kill_on_drop: false }`
[INFO] [stdout] e9a0b42f4249a0b86b1251c95289c36850a2f0d2f42e1765c1db01b485520616