[INFO] cloning repository https://github.com/BoningtonChen/link_crawler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BoningtonChen/link_crawler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBoningtonChen%2Flink_crawler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBoningtonChen%2Flink_crawler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 51f12e476eb4d3a8ebaf50dfe34f95ec938b158a
[INFO] testing BoningtonChen/link_crawler against 1.75.0 for beta-1.76-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBoningtonChen%2Flink_crawler" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BoningtonChen/link_crawler on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/BoningtonChen/link_crawler
[INFO] finished tweaking git repo https://github.com/BoningtonChen/link_crawler
[INFO] tweaked toml for git repo https://github.com/BoningtonChen/link_crawler written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/BoningtonChen/link_crawler 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded string_cache v0.6.2
[INFO] [stderr]   Downloaded debug_unreachable v0.1.1
[INFO] [stderr]   Downloaded html5ever v0.21.0
[INFO] [stderr]   Downloaded markup5ever v0.6.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f25d1c6e1df1a70327f6ae8fea4018902f66a2403516078735ffc94eecb39a25
[INFO] running `Command { std: "docker" "start" "-a" "f25d1c6e1df1a70327f6ae8fea4018902f66a2403516078735ffc94eecb39a25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f25d1c6e1df1a70327f6ae8fea4018902f66a2403516078735ffc94eecb39a25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f25d1c6e1df1a70327f6ae8fea4018902f66a2403516078735ffc94eecb39a25", kill_on_drop: false }`
[INFO] [stdout] f25d1c6e1df1a70327f6ae8fea4018902f66a2403516078735ffc94eecb39a25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 229454d1376545bc72eadee35bbff91ce0c37cf603cd9a6865290d66619711d0
[INFO] running `Command { std: "docker" "start" "-a" "229454d1376545bc72eadee35bbff91ce0c37cf603cd9a6865290d66619711d0", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.49
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling string_cache_shared v0.3.0
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]    Compiling mac v0.1.1
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling unreachable v0.1.1
[INFO] [stderr]    Compiling futf v0.1.5
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling debug_unreachable v0.1.1
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling utf-8 v0.7.6
[INFO] [stderr]    Compiling phf v0.7.24
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling safemem v0.3.3
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]    Compiling tendril v0.4.3
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling time v0.1.45
[INFO] [stderr]    Compiling num_cpus v1.15.0
[INFO] [stderr]    Compiling traitobject v0.1.0
[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]    Compiling typeable v0.1.2
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling string_cache_codegen v0.4.4
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling hyper v0.10.16
[INFO] [stderr]    Compiling string_cache v0.6.2
[INFO] [stderr]    Compiling uuid v0.1.18
[INFO] [stderr]    Compiling url v0.2.38
[INFO] [stderr]    Compiling markup5ever v0.6.2
[INFO] [stderr]    Compiling html5ever v0.21.0
[INFO] [stderr]    Compiling link_crawler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `format`
[INFO] [stdout]  --> src/fetch.rs:9:16
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::fmt::{format, Formatter};
[INFO] [stdout]   |                ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hyper::header::parsing`
[INFO] [stdout]   --> src/fetch.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use hyper::header::parsing;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `url::form_urlencoded::parse`
[INFO] [stdout]   --> src/fetch.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use url::form_urlencoded::parse;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/crawler.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/crawler.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rx`
[INFO] [stdout]   --> src/fetch.rs:60:13
[INFO] [stdout]    |
[INFO] [stdout] 60 |             let (tx, rx) = channel();
[INFO] [stdout]    |                      ^^ help: if this is intentional, prefix it with an underscore: `_rx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tx`
[INFO] [stdout]   --> src/fetch.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |             let (tx, rx) = channel();
[INFO] [stdout]    |                  ^^ help: if this is intentional, prefix it with an underscore: `_tx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `url_string`
[INFO] [stdout]   --> src/fetch.rs:94:6
[INFO] [stdout]    |
[INFO] [stdout] 94 |     let url_string = url.serialize();
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_url_string`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.51s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: html5ever v0.21.0, rustc-serialize v0.3.24, traitobject v0.1.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "229454d1376545bc72eadee35bbff91ce0c37cf603cd9a6865290d66619711d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "229454d1376545bc72eadee35bbff91ce0c37cf603cd9a6865290d66619711d0", kill_on_drop: false }`
[INFO] [stdout] 229454d1376545bc72eadee35bbff91ce0c37cf603cd9a6865290d66619711d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e81be24549cf1f9af10dbb85a74fc1c1512d33d46a2c1d18f0278ce428680cd5
[INFO] running `Command { std: "docker" "start" "-a" "e81be24549cf1f9af10dbb85a74fc1c1512d33d46a2c1d18f0278ce428680cd5", kill_on_drop: false }`
[INFO] [stderr]    Compiling link_crawler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `format`
[INFO] [stdout]  --> src/fetch.rs:9:16
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::fmt::{format, Formatter};
[INFO] [stdout]   |                ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hyper::header::parsing`
[INFO] [stdout]   --> src/fetch.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | use hyper::header::parsing;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `url::form_urlencoded::parse`
[INFO] [stdout]   --> src/fetch.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | use url::form_urlencoded::parse;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/crawler.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/crawler.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rx`
[INFO] [stdout]   --> src/fetch.rs:60:13
[INFO] [stdout]    |
[INFO] [stdout] 60 |             let (tx, rx) = channel();
[INFO] [stdout]    |                      ^^ help: if this is intentional, prefix it with an underscore: `_rx`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tx`
[INFO] [stdout]   --> src/fetch.rs:85:9
[INFO] [stdout]    |
[INFO] [stdout] 85 |             let (tx, rx) = channel();
[INFO] [stdout]    |                  ^^ help: if this is intentional, prefix it with an underscore: `_tx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `url_string`
[INFO] [stdout]   --> src/fetch.rs:94:6
[INFO] [stdout]    |
[INFO] [stdout] 94 |     let url_string = url.serialize();
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_url_string`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.26s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: html5ever v0.21.0, rustc-serialize v0.3.24, traitobject v0.1.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "e81be24549cf1f9af10dbb85a74fc1c1512d33d46a2c1d18f0278ce428680cd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e81be24549cf1f9af10dbb85a74fc1c1512d33d46a2c1d18f0278ce428680cd5", kill_on_drop: false }`
[INFO] [stdout] e81be24549cf1f9af10dbb85a74fc1c1512d33d46a2c1d18f0278ce428680cd5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.75.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f709e13dd85436d8ff4ef4e7d7ac5f47c3a0d68d8a19f2279bcf6dbdc7f9754b
[INFO] running `Command { std: "docker" "start" "-a" "f709e13dd85436d8ff4ef4e7d7ac5f47c3a0d68d8a19f2279bcf6dbdc7f9754b", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `format`
[INFO] [stderr]  --> src/fetch.rs:9:16
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::fmt::{format, Formatter};
[INFO] [stderr]   |                ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `hyper::header::parsing`
[INFO] [stderr]   --> src/fetch.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use hyper::header::parsing;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `url::form_urlencoded::parse`
[INFO] [stderr]   --> src/fetch.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | use url::form_urlencoded::parse;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::Borrow`
[INFO] [stderr]  --> src/crawler.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::borrow::Borrow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Deref`
[INFO] [stderr]  --> src/crawler.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::ops::Deref;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rx`
[INFO] [stderr]   --> src/fetch.rs:60:13
[INFO] [stderr]    |
[INFO] [stderr] 60 |             let (tx, rx) = channel();
[INFO] [stderr]    |                      ^^ help: if this is intentional, prefix it with an underscore: `_rx`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tx`
[INFO] [stderr]   --> src/fetch.rs:85:9
[INFO] [stderr]    |
[INFO] [stderr] 85 |             let (tx, rx) = channel();
[INFO] [stderr]    |                  ^^ help: if this is intentional, prefix it with an underscore: `_tx`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `url_string`
[INFO] [stderr]   --> src/fetch.rs:94:6
[INFO] [stderr]    |
[INFO] [stderr] 94 |     let url_string = url.serialize();
[INFO] [stderr]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_url_string`
[INFO] [stderr] 
[INFO] [stderr] warning: `link_crawler` (bin "link_crawler" test) generated 8 warnings (run `cargo fix --bin "link_crawler" --tests` to apply 8 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: html5ever v0.21.0, rustc-serialize v0.3.24, traitobject v0.1.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/link_crawler-5aef42acd6e2c8fc)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f709e13dd85436d8ff4ef4e7d7ac5f47c3a0d68d8a19f2279bcf6dbdc7f9754b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f709e13dd85436d8ff4ef4e7d7ac5f47c3a0d68d8a19f2279bcf6dbdc7f9754b", kill_on_drop: false }`
[INFO] [stdout] f709e13dd85436d8ff4ef4e7d7ac5f47c3a0d68d8a19f2279bcf6dbdc7f9754b
[INFO] testing BoningtonChen/link_crawler against beta-2023-12-22 for beta-1.76-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBoningtonChen%2Flink_crawler" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BoningtonChen/link_crawler on toolchain beta-2023-12-22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/BoningtonChen/link_crawler
[INFO] finished tweaking git repo https://github.com/BoningtonChen/link_crawler
[INFO] tweaked toml for git repo https://github.com/BoningtonChen/link_crawler written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/BoningtonChen/link_crawler 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" "+beta-2023-12-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+beta-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8b1020461c611749e2672464ba12e7eef9ae0a181294ba8d2b0c303663a8a490
[INFO] running `Command { std: "docker" "start" "-a" "8b1020461c611749e2672464ba12e7eef9ae0a181294ba8d2b0c303663a8a490", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b1020461c611749e2672464ba12e7eef9ae0a181294ba8d2b0c303663a8a490", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b1020461c611749e2672464ba12e7eef9ae0a181294ba8d2b0c303663a8a490", kill_on_drop: false }`
[INFO] [stdout] 8b1020461c611749e2672464ba12e7eef9ae0a181294ba8d2b0c303663a8a490
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2023-12-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d87ae96a96da2427417c094aca5e65eca1dfcee676cfa5ec4f428e645fa6a339
[INFO] running `Command { std: "docker" "start" "-a" "d87ae96a96da2427417c094aca5e65eca1dfcee676cfa5ec4f428e645fa6a339", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.49
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling string_cache_shared v0.3.0
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]    Compiling mac v0.1.1
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling unreachable v0.1.1
[INFO] [stderr]    Compiling futf v0.1.5
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling debug_unreachable v0.1.1
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling precomputed-hash v0.1.1
[INFO] [stdout] error[E0310]: the parameter type `T` may not live long enough
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/rustc-serialize-0.3.24/src/serialize.rs:1155:5
[INFO] [stdout]      |
[INFO] [stdout] 1155 |     fn decode<D: Decoder>(d: &mut D) -> Result<Cow<'static, T>, D::Error> {
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |     |
[INFO] [stdout]      |     the parameter type `T` must be valid for the static lifetime...
[INFO] [stdout]      |     ...so that the type `T` will meet its required lifetime bounds...
[INFO] [stdout]      |
[INFO] [stdout] note: ...that is required by this bound
[INFO] [stdout]     --> /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/alloc/src/borrow.rs:180:30
[INFO] [stdout] help: consider adding an explicit lifetime bound
[INFO] [stdout]      |
[INFO] [stdout] 1151 | impl<'a, T: ?Sized + 'static> Decodable for Cow<'a, T>
[INFO] [stdout]      |                    +++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling utf-8 v0.7.6
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling phf v0.7.24
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling safemem v0.3.3
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling tendril v0.4.3
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]    Compiling time v0.1.45
[INFO] [stderr]    Compiling num_cpus v1.15.0
[INFO] [stderr]    Compiling traitobject v0.1.0
[INFO] [stderr]    Compiling typeable v0.1.2
[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0310`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc-serialize` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "d87ae96a96da2427417c094aca5e65eca1dfcee676cfa5ec4f428e645fa6a339", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d87ae96a96da2427417c094aca5e65eca1dfcee676cfa5ec4f428e645fa6a339", kill_on_drop: false }`
[INFO] [stdout] d87ae96a96da2427417c094aca5e65eca1dfcee676cfa5ec4f428e645fa6a339
