[INFO] cloning repository https://github.com/iodapson/tiny-scraper
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/iodapson/tiny-scraper" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiodapson%2Ftiny-scraper", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiodapson%2Ftiny-scraper'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f6c552f259fdf1577bd82173e4d345a79c17b784
[INFO] testing iodapson/tiny-scraper against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiodapson%2Ftiny-scraper" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/iodapson/tiny-scraper
[INFO] finished tweaking git repo https://github.com/iodapson/tiny-scraper
[INFO] tweaked toml for git repo https://github.com/iodapson/tiny-scraper written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/iodapson/tiny-scraper on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/iodapson/tiny-scraper 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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded scraper v0.13.0
[INFO] [stderr]   Downloaded semver v1.0.13
[INFO] [stderr]   Downloaded openssl-sys v0.9.75
[INFO] [stderr]   Downloaded openssl v0.10.41
[INFO] [stderr]   Downloaded hyper v0.14.20
[INFO] [stderr]   Downloaded unicode-normalization v0.1.21
[INFO] [stderr]   Downloaded reqwest v0.11.11
[INFO] [stderr]   Downloaded tokio v1.20.1
[INFO] [stderr]   Downloaded web-sys v0.3.59
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0ca1709e57b9675cececc18ae64ba296348eaf822b1929be2dd313b9f184f0eb
[INFO] running `Command { std: "docker" "start" "-a" "0ca1709e57b9675cececc18ae64ba296348eaf822b1929be2dd313b9f184f0eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ca1709e57b9675cececc18ae64ba296348eaf822b1929be2dd313b9f184f0eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ca1709e57b9675cececc18ae64ba296348eaf822b1929be2dd313b9f184f0eb", kill_on_drop: false }`
[INFO] [stdout] 0ca1709e57b9675cececc18ae64ba296348eaf822b1929be2dd313b9f184f0eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7c82cd39a836a9e32ebc0c4356dcb2b8b2e5a728fb8257f9eac20e09ab2bb8b6
[INFO] running `Command { std: "docker" "start" "-a" "7c82cd39a836a9e32ebc0c4356dcb2b8b2e5a728fb8257f9eac20e09ab2bb8b6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.127
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling siphasher v0.3.10
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling openssl-sys v0.9.75
[INFO] [stderr]    Compiling bytes v1.2.1
[INFO] [stderr]    Compiling tokio v1.20.1
[INFO] [stderr]    Compiling smallvec v1.9.0
[INFO] [stderr]    Compiling serde v1.0.142
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling tracing-core v0.1.29
[INFO] [stderr]    Compiling openssl v0.10.41
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.4
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling native-tls v0.2.10
[INFO] [stderr]    Compiling tinyvec v1.6.0
[INFO] [stderr]    Compiling tracing v0.1.36
[INFO] [stderr]    Compiling futf v0.1.5
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[INFO] [stderr]    Compiling tendril v0.4.3
[INFO] [stderr]    Compiling dtoa-short v0.3.3
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling encoding_rs v0.8.31
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling unicode-bidi v0.3.8
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[INFO] [stderr]    Compiling ryu v1.0.11
[INFO] [stderr]    Compiling servo_arc v0.1.1
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling ipnet v2.5.0
[INFO] [stderr]    Compiling ego-tree v0.6.2
[INFO] [stderr]    Compiling base64 v0.13.0
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[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling socket2 v0.4.4
[INFO] [stderr]    Compiling getrandom v0.2.7
[INFO] [stderr]    Compiling http v0.2.8
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]    Compiling rand_core v0.5.1
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[INFO] [stderr]    Compiling rand_core v0.6.3
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[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling parking_lot v0.12.1
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[INFO] [stderr]    Compiling rand v0.7.3
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[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling selectors v0.22.0
[INFO] [stderr]    Compiling phf_generator v0.10.0
[INFO] [stderr]    Compiling phf_codegen v0.10.0
[INFO] [stderr]    Compiling string_cache_codegen v0.5.2
[INFO] [stderr]    Compiling markup5ever v0.11.0
[INFO] [stderr]    Compiling string_cache v0.8.4
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling tokio-util v0.7.3
[INFO] [stderr]    Compiling h2 v0.3.13
[INFO] [stderr]    Compiling openssl-macros v0.1.0
[INFO] [stderr]    Compiling phf_macros v0.8.0
[INFO] [stderr]    Compiling cssparser v0.27.2
[INFO] [stderr]    Compiling cssparser-macros v0.6.0
[INFO] [stderr]    Compiling html5ever v0.26.0
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]    Compiling phf v0.8.0
[INFO] [stderr]    Compiling scraper v0.13.0
[INFO] [stderr]    Compiling tokio-native-tls v0.3.0
[INFO] [stderr]    Compiling hyper v0.14.20
[INFO] [stderr]    Compiling hyper-tls v0.5.0
[INFO] [stderr]    Compiling reqwest v0.11.11
[INFO] [stderr]    Compiling a-tiny-scraper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]   --> src/main.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |         format!("<{}>", element);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 73 |         let _ = format!("<{}>", element);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 42.75s
[INFO] running `Command { std: "docker" "inspect" "7c82cd39a836a9e32ebc0c4356dcb2b8b2e5a728fb8257f9eac20e09ab2bb8b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c82cd39a836a9e32ebc0c4356dcb2b8b2e5a728fb8257f9eac20e09ab2bb8b6", kill_on_drop: false }`
[INFO] [stdout] 7c82cd39a836a9e32ebc0c4356dcb2b8b2e5a728fb8257f9eac20e09ab2bb8b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d01a8db954e0042343d685e3cac956737c2eded13d1ef6d25ca7ccb026ea15fe
[INFO] running `Command { std: "docker" "start" "-a" "d01a8db954e0042343d685e3cac956737c2eded13d1ef6d25ca7ccb026ea15fe", kill_on_drop: false }`
[INFO] [stderr]    Compiling a-tiny-scraper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]   --> src/main.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |         format!("<{}>", element);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 73 |         let _ = format!("<{}>", element);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "d01a8db954e0042343d685e3cac956737c2eded13d1ef6d25ca7ccb026ea15fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d01a8db954e0042343d685e3cac956737c2eded13d1ef6d25ca7ccb026ea15fe", kill_on_drop: false }`
[INFO] [stdout] d01a8db954e0042343d685e3cac956737c2eded13d1ef6d25ca7ccb026ea15fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7e44834fb5ed2209baaef30bae5a7832cefe0386f3156efb733b49e5c480cdc5
[INFO] running `Command { std: "docker" "start" "-a" "7e44834fb5ed2209baaef30bae5a7832cefe0386f3156efb733b49e5c480cdc5", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `must_use` that must be used
[INFO] [stderr]   --> src/main.rs:73:9
[INFO] [stderr]    |
[INFO] [stderr] 73 |         format!("<{}>", element);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 73 |         let _ = format!("<{}>", element);
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `a-tiny-scraper` (bin "a-tiny-scraper" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/a_tiny_scraper-9f2ebcf520838812)
[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" "7e44834fb5ed2209baaef30bae5a7832cefe0386f3156efb733b49e5c480cdc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e44834fb5ed2209baaef30bae5a7832cefe0386f3156efb733b49e5c480cdc5", kill_on_drop: false }`
[INFO] [stdout] 7e44834fb5ed2209baaef30bae5a7832cefe0386f3156efb733b49e5c480cdc5