[INFO] fetching crate hyperx_chantra 1.4.0...
[INFO] checking hyperx_chantra-1.4.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate hyperx_chantra 1.4.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate hyperx_chantra 1.4.0 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hyperx_chantra 1.4.0
[INFO] finished tweaking crates.io crate hyperx_chantra 1.4.0
[INFO] tweaked toml for crates.io crate hyperx_chantra 1.4.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 12 packages
[INFO] [stderr]       Adding base64 v0.13.1 (latest: v0.22.0)
[INFO] [stderr]       Adding http v0.2.12 (latest: v1.1.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cbe8ac554298ba6c6a767ed0db56314b66b5b887972e415a8f2d0d971ea0c10a
[INFO] running `Command { std: "docker" "start" "-a" "cbe8ac554298ba6c6a767ed0db56314b66b5b887972e415a8f2d0d971ea0c10a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cbe8ac554298ba6c6a767ed0db56314b66b5b887972e415a8f2d0d971ea0c10a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbe8ac554298ba6c6a767ed0db56314b66b5b887972e415a8f2d0d971ea0c10a", kill_on_drop: false }`
[INFO] [stdout] cbe8ac554298ba6c6a767ed0db56314b66b5b887972e415a8f2d0d971ea0c10a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30641c62d3c275630cc3b7487cffc2f8fd4fc3e7a2c2c3a2c9717b24114c70a1
[INFO] running `Command { std: "docker" "start" "-a" "30641c62d3c275630cc3b7487cffc2f8fd4fc3e7a2c2c3a2c9717b24114c70a1", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicase v2.7.0
[INFO] [stderr]    Compiling hyperx_chantra v1.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking language-tags v0.3.2
[INFO] [stdout] warning: the item `AsRef` is imported redundantly
[INFO] [stdout]  --> src/method.rs:4:20
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::convert::{AsRef, TryFrom};
[INFO] [stdout]   |                    ^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:124:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `AsRef` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `http` is imported redundantly
[INFO] [stdout]   --> src/method.rs:6:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | use http;
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | extern crate http;
[INFO] [stdout]    | ------------------ the item `http` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mime` is imported redundantly
[INFO] [stdout]   --> src/header/common/accept.rs:1:12
[INFO] [stdout]    |
[INFO] [stdout] 1  | use mime::{self, Mime};
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub extern crate mime;
[INFO] [stdout]    | ---------------------- the item `mime` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `unicase` is imported redundantly
[INFO] [stdout]   --> src/header/common/access_control_allow_credentials.rs:3:5
[INFO] [stdout]    |
[INFO] [stdout] 3  | use unicase;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | extern crate unicase;
[INFO] [stdout]    | --------------------- the item `unicase` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `unicase` is imported redundantly
[INFO] [stdout]   --> src/header/common/content_disposition.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use unicase;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | extern crate unicase;
[INFO] [stdout]    | --------------------- the item `unicase` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mime` is imported redundantly
[INFO] [stdout]   --> src/header/common/content_type.rs:1:12
[INFO] [stdout]    |
[INFO] [stdout] 1  | use mime::{self, Mime};
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub extern crate mime;
[INFO] [stdout]    | ---------------------- the item `mime` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `unicase` is imported redundantly
[INFO] [stdout]   --> src/header/common/expect.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | use unicase;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | extern crate unicase;
[INFO] [stdout]    | --------------------- the item `unicase` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `unicase` is imported redundantly
[INFO] [stdout]   --> src/header/common/strict_transport_security.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | use unicase;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | extern crate unicase;
[INFO] [stdout]    | --------------------- the item `unicase` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `unicase` is imported redundantly
[INFO] [stdout]   --> src/header/common/upgrade.rs:3:5
[INFO] [stdout]    |
[INFO] [stdout] 3  | use unicase;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | extern crate unicase;
[INFO] [stdout]    | --------------------- the item `unicase` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Default` is imported redundantly
[INFO] [stdout]  --> src/header/shared/quality_item.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::default::Default;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:124:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Default` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `percent_encoding` is imported redundantly
[INFO] [stdout]   --> src/header/parsing.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | use percent_encoding;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | extern crate percent_encoding;
[INFO] [stdout]    | ------------------------------ the item `percent_encoding` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AsRef` is imported redundantly
[INFO] [stdout]  --> src/method.rs:4:20
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::convert::{AsRef, TryFrom};
[INFO] [stdout]   |                    ^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:124:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `AsRef` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `http` is imported redundantly
[INFO] [stdout]   --> src/method.rs:6:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | use http;
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | extern crate http;
[INFO] [stdout]    | ------------------ the item `http` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mime` is imported redundantly
[INFO] [stdout]   --> src/header/common/accept.rs:1:12
[INFO] [stdout]    |
[INFO] [stdout] 1  | use mime::{self, Mime};
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub extern crate mime;
[INFO] [stdout]    | ---------------------- the item `mime` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `unicase` is imported redundantly
[INFO] [stdout]   --> src/header/common/access_control_allow_credentials.rs:3:5
[INFO] [stdout]    |
[INFO] [stdout] 3  | use unicase;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | extern crate unicase;
[INFO] [stdout]    | --------------------- the item `unicase` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Header` is imported redundantly
[INFO] [stdout]    --> src/header/common/cache_control.rs:179:18
[INFO] [stdout]     |
[INFO] [stdout] 179 |     use header::{Header, Raw};
[INFO] [stdout]     |                  ^^^^^^
[INFO] [stdout] 180 |     use super::*;
[INFO] [stdout]     |         -------- the item `Header` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `unicase` is imported redundantly
[INFO] [stdout]   --> src/header/common/content_disposition.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use unicase;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | extern crate unicase;
[INFO] [stdout]    | --------------------- the item `unicase` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mime` is imported redundantly
[INFO] [stdout]   --> src/header/common/content_type.rs:1:12
[INFO] [stdout]    |
[INFO] [stdout] 1  | use mime::{self, Mime};
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub extern crate mime;
[INFO] [stdout]    | ---------------------- the item `mime` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `unicase` is imported redundantly
[INFO] [stdout]   --> src/header/common/expect.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | use unicase;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | extern crate unicase;
[INFO] [stdout]    | --------------------- the item `unicase` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mime` is imported redundantly
[INFO] [stdout]    --> src/header/common/link.rs:903:9
[INFO] [stdout]     |
[INFO] [stdout] 903 |     use mime;
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:20:1
[INFO] [stdout]     |
[INFO] [stdout] 20  | pub extern crate mime;
[INFO] [stdout]     | ---------------------- the item `mime` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Header` is imported redundantly
[INFO] [stdout]    --> src/header/common/prefer.rs:172:18
[INFO] [stdout]     |
[INFO] [stdout] 172 |     use header::{Header, Raw};
[INFO] [stdout]     |                  ^^^^^^
[INFO] [stdout] 173 |     use super::*;
[INFO] [stdout]     |         -------- the item `Header` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Preference` is imported redundantly
[INFO] [stdout]    --> src/header/common/preference_applied.rs:101:9
[INFO] [stdout]     |
[INFO] [stdout] 101 |     use header::Preference;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 102 |     use super::*;
[INFO] [stdout]     |         -------- the item `Preference` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `unicase` is imported redundantly
[INFO] [stdout]   --> src/header/common/strict_transport_security.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | use unicase;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | extern crate unicase;
[INFO] [stdout]    | --------------------- the item `unicase` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `unicase` is imported redundantly
[INFO] [stdout]   --> src/header/common/upgrade.rs:3:5
[INFO] [stdout]    |
[INFO] [stdout] 3  | use unicase;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | extern crate unicase;
[INFO] [stdout]    | --------------------- the item `unicase` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Default` is imported redundantly
[INFO] [stdout]  --> src/header/shared/quality_item.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::default::Default;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:124:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Default` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `percent_encoding` is imported redundantly
[INFO] [stdout]   --> src/header/parsing.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout] 7  | use percent_encoding;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | extern crate percent_encoding;
[INFO] [stdout]    | ------------------------------ the item `percent_encoding` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `http` is imported redundantly
[INFO] [stdout]    --> src/header/compat.rs:214:9
[INFO] [stdout]     |
[INFO] [stdout] 214 |     use http;
[INFO] [stdout]     |         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/lib.rs:18:1
[INFO] [stdout]     |
[INFO] [stdout] 18  | extern crate http;
[INFO] [stdout]     | ------------------ the item `http` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AssertSendSync` is never used
[INFO] [stdout]   --> src/error.rs:99:7
[INFO] [stdout]    |
[INFO] [stdout] 99 | trait AssertSendSync: Send + Sync + 'static {}
[INFO] [stdout]    |       ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AssertSendSync` is never used
[INFO] [stdout]   --> src/error.rs:99:7
[INFO] [stdout]    |
[INFO] [stdout] 99 | trait AssertSendSync: Send + Sync + 'static {}
[INFO] [stdout]    |       ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.71s
[INFO] running `Command { std: "docker" "inspect" "30641c62d3c275630cc3b7487cffc2f8fd4fc3e7a2c2c3a2c9717b24114c70a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30641c62d3c275630cc3b7487cffc2f8fd4fc3e7a2c2c3a2c9717b24114c70a1", kill_on_drop: false }`
[INFO] [stdout] 30641c62d3c275630cc3b7487cffc2f8fd4fc3e7a2c2c3a2c9717b24114c70a1