[INFO] fetching crate www-authenticate 0.4.0...
[INFO] checking www-authenticate-0.4.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate www-authenticate 0.4.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate www-authenticate 0.4.0 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 www-authenticate 0.4.0
[INFO] finished tweaking crates.io crate www-authenticate 0.4.0
[INFO] tweaked toml for crates.io crate www-authenticate 0.4.0 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 23 packages
[INFO] [stderr]       Adding base64 v0.13.1 (latest: v0.22.0)
[INFO] [stderr]       Adding bytes v1.1.0 (latest: v1.6.0)
[INFO] [stderr]       Adding http v0.2.12 (latest: v1.1.0)
[INFO] [stderr]       Adding idna v0.1.5 (latest: v0.5.0)
[INFO] [stderr]       Adding percent-encoding v1.0.1 (latest: v2.3.1)
[INFO] [stderr]       Adding percent-encoding v2.1.0 (latest: v2.3.1)
[INFO] [stderr]       Adding unicase v1.4.2 (latest: v2.7.0)
[INFO] [stderr]       Adding unicase v2.6.0 (latest: v2.7.0)
[INFO] [stderr]       Adding url v1.7.2 (latest: v2.5.0)
[INFO] [stderr]       Adding version_check v0.1.5 (latest: v0.9.4)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded language-tags v0.3.2
[INFO] [stderr]   Downloaded hyperx v1.4.0
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7161f6898b8434783784e372a8269b16dbfc7aea3978c771def6a0c84a4a5802
[INFO] running `Command { std: "docker" "start" "-a" "7161f6898b8434783784e372a8269b16dbfc7aea3978c771def6a0c84a4a5802", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7161f6898b8434783784e372a8269b16dbfc7aea3978c771def6a0c84a4a5802", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7161f6898b8434783784e372a8269b16dbfc7aea3978c771def6a0c84a4a5802", kill_on_drop: false }`
[INFO] [stdout] 7161f6898b8434783784e372a8269b16dbfc7aea3978c771def6a0c84a4a5802
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ccf7f7dca02b10c6dd34e495ea0f065fca4ba306c5e6ddf1502f6b8f5b4e57c
[INFO] running `Command { std: "docker" "start" "-a" "3ccf7f7dca02b10c6dd34e495ea0f065fca4ba306c5e6ddf1502f6b8f5b4e57c", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling hyperx v1.4.0
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking language-tags v0.3.2
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]     Checking http v0.2.12
[INFO] [stderr]     Checking www-authenticate v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Cow` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:252:9
[INFO] [stdout]     |
[INFO] [stdout] 251 |     use super::*;
[INFO] [stdout]     |         -------- the item `Cow` is already imported here
[INFO] [stdout] 252 |     use std::borrow::Cow;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mem` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:253:9
[INFO] [stdout]     |
[INFO] [stdout] 251 |     use super::*;
[INFO] [stdout]     |         -------- the item `mem` is already imported here
[INFO] [stdout] 252 |     use std::borrow::Cow;
[INFO] [stdout] 253 |     use std::mem;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `UniCase` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:254:9
[INFO] [stdout]     |
[INFO] [stdout] 251 |     use super::*;
[INFO] [stdout]     |         -------- the item `UniCase` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 254 |     use unicase::UniCase;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Cow` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:252:9
[INFO] [stdout]     |
[INFO] [stdout] 251 |     use super::*;
[INFO] [stdout]     |         -------- the item `Cow` is already imported here
[INFO] [stdout] 252 |     use std::borrow::Cow;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mem` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:253:9
[INFO] [stdout]     |
[INFO] [stdout] 251 |     use super::*;
[INFO] [stdout]     |         -------- the item `mem` is already imported here
[INFO] [stdout] 252 |     use std::borrow::Cow;
[INFO] [stdout] 253 |     use std::mem;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `UniCase` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:254:9
[INFO] [stdout]     |
[INFO] [stdout] 251 |     use super::*;
[INFO] [stdout]     |         -------- the item `UniCase` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 254 |     use unicase::UniCase;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.71s
[INFO] running `Command { std: "docker" "inspect" "3ccf7f7dca02b10c6dd34e495ea0f065fca4ba306c5e6ddf1502f6b8f5b4e57c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ccf7f7dca02b10c6dd34e495ea0f065fca4ba306c5e6ddf1502f6b8f5b4e57c", kill_on_drop: false }`
[INFO] [stdout] 3ccf7f7dca02b10c6dd34e495ea0f065fca4ba306c5e6ddf1502f6b8f5b4e57c
[INFO] checking www-authenticate-0.4.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate www-authenticate 0.4.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate www-authenticate 0.4.0 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 www-authenticate 0.4.0
[INFO] finished tweaking crates.io crate www-authenticate 0.4.0
[INFO] tweaked toml for crates.io crate www-authenticate 0.4.0 written to /workspace/builds/worker-3-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]     Blocking waiting for file lock on package cache
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 0ed2d7a291c407d7d14623887aed487b08e33e9f7d6376995e1b05b2f91d2db1
[INFO] running `Command { std: "docker" "start" "-a" "0ed2d7a291c407d7d14623887aed487b08e33e9f7d6376995e1b05b2f91d2db1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ed2d7a291c407d7d14623887aed487b08e33e9f7d6376995e1b05b2f91d2db1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ed2d7a291c407d7d14623887aed487b08e33e9f7d6376995e1b05b2f91d2db1", kill_on_drop: false }`
[INFO] [stdout] 0ed2d7a291c407d7d14623887aed487b08e33e9f7d6376995e1b05b2f91d2db1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 518f4aa6510f226806b11073b21fa0e481a03aed0263357d47d2d06247eb0243
[INFO] running `Command { std: "docker" "start" "-a" "518f4aa6510f226806b11073b21fa0e481a03aed0263357d47d2d06247eb0243", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]    Compiling hyperx v1.4.0
[INFO] [stderr]     Checking language-tags v0.3.2
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]     Checking http v0.2.12
[INFO] [stderr]     Checking www-authenticate v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Cow` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:252:9
[INFO] [stdout]     |
[INFO] [stdout] 251 |     use super::*;
[INFO] [stdout]     |         -------- the item `Cow` is already imported here
[INFO] [stdout] 252 |     use std::borrow::Cow;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mem` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:253:9
[INFO] [stdout]     |
[INFO] [stdout] 251 |     use super::*;
[INFO] [stdout]     |         -------- the item `mem` is already imported here
[INFO] [stdout] 252 |     use std::borrow::Cow;
[INFO] [stdout] 253 |     use std::mem;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `UniCase` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:254:9
[INFO] [stdout]     |
[INFO] [stdout] 251 |     use super::*;
[INFO] [stdout]     |         -------- the item `UniCase` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 254 |     use unicase::UniCase;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Cow` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:252:9
[INFO] [stdout]     |
[INFO] [stdout] 251 |     use super::*;
[INFO] [stdout]     |         -------- the item `Cow` is already imported here
[INFO] [stdout] 252 |     use std::borrow::Cow;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `mem` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:253:9
[INFO] [stdout]     |
[INFO] [stdout] 251 |     use super::*;
[INFO] [stdout]     |         -------- the item `mem` is already imported here
[INFO] [stdout] 252 |     use std::borrow::Cow;
[INFO] [stdout] 253 |     use std::mem;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `UniCase` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:254:9
[INFO] [stdout]     |
[INFO] [stdout] 251 |     use super::*;
[INFO] [stdout]     |         -------- the item `UniCase` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 254 |     use unicase::UniCase;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.43s
[INFO] running `Command { std: "docker" "inspect" "518f4aa6510f226806b11073b21fa0e481a03aed0263357d47d2d06247eb0243", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "518f4aa6510f226806b11073b21fa0e481a03aed0263357d47d2d06247eb0243", kill_on_drop: false }`
[INFO] [stdout] 518f4aa6510f226806b11073b21fa0e481a03aed0263357d47d2d06247eb0243