[INFO] fetching crate rs-youtube 0.2.2...
[INFO] checking rs-youtube-0.2.2 against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] extracting crate rs-youtube 0.2.2 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate rs-youtube 0.2.2
[INFO] finished tweaking crates.io crate rs-youtube 0.2.2
[INFO] tweaked toml for crates.io crate rs-youtube 0.2.2 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rs-youtube 0.2.2 on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rs-youtube 0.2.2 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--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] [stderr]     Blocking waiting for file lock on package cache
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f3a12e1535d182d80a756dcd9a66611dfe7a1740ba147faed184a198ff9df4c7
[INFO] running `Command { std: "docker" "start" "-a" "f3a12e1535d182d80a756dcd9a66611dfe7a1740ba147faed184a198ff9df4c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f3a12e1535d182d80a756dcd9a66611dfe7a1740ba147faed184a198ff9df4c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3a12e1535d182d80a756dcd9a66611dfe7a1740ba147faed184a198ff9df4c7", kill_on_drop: false }`
[INFO] [stdout] f3a12e1535d182d80a756dcd9a66611dfe7a1740ba147faed184a198ff9df4c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8e5631b1b7b0034afd0dc84041c8cdb1be582ccdefe729daba2f120f6040699e
[INFO] running `Command { std: "docker" "start" "-a" "8e5631b1b7b0034afd0dc84041c8cdb1be582ccdefe729daba2f120f6040699e", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.70
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]     Checking unicode-normalization v0.1.17
[INFO] [stderr]     Checking regex-syntax v0.6.23
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]     Checking chunked_transfer v1.4.0
[INFO] [stderr]     Checking webbrowser v0.5.5
[INFO] [stderr]     Checking directories v3.0.2
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking regex v1.4.6
[INFO] [stderr]     Checking url v2.2.1
[INFO] [stderr]     Checking console v0.14.1
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling serde-query-derive v0.1.3
[INFO] [stderr]     Checking webpki v0.21.4
[INFO] [stderr]     Checking sct v0.6.1
[INFO] [stderr]     Checking webpki-roots v0.21.1
[INFO] [stderr]     Checking rustls v0.19.1
[INFO] [stderr]     Checking serde v1.0.125
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking serde-query v0.1.3
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking ureq v2.1.0
[INFO] [stderr]     Checking rs-youtube v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `return_string` is never read
[INFO] [stdout]   --> src/frontend/generic_menu.rs:17:16
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct OrderedItem {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] 16 |     pub(crate) label: String,
[INFO] [stdout] 17 |     pub(crate) return_string: Option<String>,
[INFO] [stdout]    |                ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `OrderedItem` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `description` and `video_count` are never read
[INFO] [stdout]   --> src/backend/youtube/search.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub struct YoutubeChannel {
[INFO] [stdout]    |            -------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 42 |     description: String,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 43 |     video_count: String,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `YoutubeChannel` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `return_string` is never read
[INFO] [stdout]   --> src/frontend/generic_menu.rs:17:16
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct OrderedItem {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] 16 |     pub(crate) label: String,
[INFO] [stdout] 17 |     pub(crate) return_string: Option<String>,
[INFO] [stdout]    |                ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `OrderedItem` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `description` and `video_count` are never read
[INFO] [stdout]   --> src/backend/youtube/search.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub struct YoutubeChannel {
[INFO] [stdout]    |            -------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 42 |     description: String,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 43 |     video_count: String,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `YoutubeChannel` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.01s
[INFO] running `Command { std: "docker" "inspect" "8e5631b1b7b0034afd0dc84041c8cdb1be582ccdefe729daba2f120f6040699e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e5631b1b7b0034afd0dc84041c8cdb1be582ccdefe729daba2f120f6040699e", kill_on_drop: false }`
[INFO] [stdout] 8e5631b1b7b0034afd0dc84041c8cdb1be582ccdefe729daba2f120f6040699e