[INFO] cloning repository https://github.com/TC-C/chat_reader
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TC-C/chat_reader" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTC-C%2Fchat_reader", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTC-C%2Fchat_reader'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 680dc32f8ab758e0b3398c8d255c89d8f7aba824
[INFO] checking TC-C/chat_reader against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTC-C%2Fchat_reader" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TC-C/chat_reader 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 git repo https://github.com/TC-C/chat_reader
[INFO] finished tweaking git repo https://github.com/TC-C/chat_reader
[INFO] tweaked toml for git repo https://github.com/TC-C/chat_reader written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/TC-C/chat_reader 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]  Downloading crates ...
[INFO] [stderr]   Downloaded openssl-sys v0.9.65
[INFO] [stderr]   Downloaded security-framework v2.3.1
[INFO] [stderr]   Downloaded security-framework-sys v2.3.0
[INFO] [stderr]   Downloaded openssl v0.10.35
[INFO] [stderr]   Downloaded roxmltree v0.14.1
[INFO] [stderr]   Downloaded native-tls v0.2.7
[INFO] [stderr]   Downloaded xmlparser v0.13.3
[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] af9612f7e0f37aa7dad763428a73072666b7ecccf8bc63febc918b4193e614dd
[INFO] running `Command { std: "docker" "start" "-a" "af9612f7e0f37aa7dad763428a73072666b7ecccf8bc63febc918b4193e614dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af9612f7e0f37aa7dad763428a73072666b7ecccf8bc63febc918b4193e614dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af9612f7e0f37aa7dad763428a73072666b7ecccf8bc63febc918b4193e614dd", kill_on_drop: false }`
[INFO] [stdout] af9612f7e0f37aa7dad763428a73072666b7ecccf8bc63febc918b4193e614dd
[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] e2030f149ed4fd3ddece83a465f9bc0878b0b7681e54cbda9a8b0ff7c960d4ff
[INFO] running `Command { std: "docker" "start" "-a" "e2030f149ed4fd3ddece83a465f9bc0878b0b7681e54cbda9a8b0ff7c960d4ff", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]    Compiling cc v1.0.68
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling futures-task v0.3.15
[INFO] [stderr]     Checking tracing-core v0.1.18
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling openssl v0.10.35
[INFO] [stderr]     Checking http v0.2.4
[INFO] [stderr]     Checking slab v0.4.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking futures-sink v0.3.15
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]     Checking futures-io v0.3.15
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]    Compiling httparse v1.7.1
[INFO] [stderr]    Compiling openssl-sys v0.9.65
[INFO] [stderr]     Checking tokio v1.16.1
[INFO] [stderr]     Checking tinyvec v1.2.0
[INFO] [stderr]     Checking openssl-probe v0.1.4
[INFO] [stderr]    Compiling signal-hook v0.3.9
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking socket2 v0.4.0
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking unicode-bidi v0.3.5
[INFO] [stderr]     Checking http-body v0.4.2
[INFO] [stderr]     Checking instant v0.1.10
[INFO] [stderr]     Checking httpdate v1.0.1
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling encoding_rs v0.8.28
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]     Checking signal-hook-mio v0.2.1
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking ipnet v2.3.1
[INFO] [stderr]     Checking xmlparser v0.13.3
[INFO] [stderr]     Checking crossterm v0.20.0
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking roxmltree v0.14.1
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.21
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stderr]     Checking tokio-util v0.7.2
[INFO] [stderr]     Checking h2 v0.3.13
[INFO] [stderr]     Checking hyper v0.14.19
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.4
[INFO] [stderr]     Checking chat_reader v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/afreecatv/afreecatv_reader.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |         tx.send(());
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 72 |         let _ = tx.send(());
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/afreecatv/afreecatv_reader.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |         chat_thread.join();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 73 |         let _ = chat_thread.join();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/twitch/twitch_reader.rs:149:9
[INFO] [stdout]     |
[INFO] [stdout] 149 |         tx.send(());
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 149 |         let _ = tx.send(());
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/afreecatv/afreecatv_reader.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |         tx.send(());
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 72 |         let _ = tx.send(());
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/afreecatv/afreecatv_reader.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |         chat_thread.join();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 73 |         let _ = chat_thread.join();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/twitch/twitch_reader.rs:149:9
[INFO] [stdout]     |
[INFO] [stdout] 149 |         tx.send(());
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 149 |         let _ = tx.send(());
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 38.71s
[INFO] running `Command { std: "docker" "inspect" "e2030f149ed4fd3ddece83a465f9bc0878b0b7681e54cbda9a8b0ff7c960d4ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2030f149ed4fd3ddece83a465f9bc0878b0b7681e54cbda9a8b0ff7c960d4ff", kill_on_drop: false }`
[INFO] [stdout] e2030f149ed4fd3ddece83a465f9bc0878b0b7681e54cbda9a8b0ff7c960d4ff