[INFO] fetching crate sylt-std 0.1.0...
[INFO] checking sylt-std-0.1.0 against master#8007b506ac5da629f223b755f5a5391edd5f6d01 for pr-88041
[INFO] extracting crate sylt-std 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate sylt-std 0.1.0 on toolchain 8007b506ac5da629f223b755f5a5391edd5f6d01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sylt-std 0.1.0
[INFO] finished tweaking crates.io crate sylt-std 0.1.0
[INFO] tweaked toml for crates.io crate sylt-std 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 13957d68bc7beec46d2589abd3d12f64704d763f9dadc694a19e77825f71bf8e
[INFO] running `Command { std: "docker" "start" "-a" "13957d68bc7beec46d2589abd3d12f64704d763f9dadc694a19e77825f71bf8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "13957d68bc7beec46d2589abd3d12f64704d763f9dadc694a19e77825f71bf8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13957d68bc7beec46d2589abd3d12f64704d763f9dadc694a19e77825f71bf8e", kill_on_drop: false }`
[INFO] [stdout] 13957d68bc7beec46d2589abd3d12f64704d763f9dadc694a19e77825f71bf8e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e8cbb91e85c6584f7549e07fc7ed7e19999081b147dd29c30d74a0ca14e2d89
[INFO] running `Command { std: "docker" "start" "-a" "2e8cbb91e85c6584f7549e07fc7ed7e19999081b147dd29c30d74a0ca14e2d89", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling log v0.4.14
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[INFO] [stderr]     Checking ttf-parser v0.12.3
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[INFO] [stderr]     Checking ab_glyph_rasterizer v0.1.4
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking xi-unicode v0.3.0
[INFO] [stderr]    Compiling beef v0.5.1
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[INFO] [stderr]     Checking ordered-float v2.7.0
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[INFO] [stderr]    Compiling gl v0.14.0
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[INFO] [stderr]     Checking glyph_brush_draw_cache v0.1.4
[INFO] [stderr]     Checking glyph_brush v0.7.2
[INFO] [stderr]    Compiling luminance-derive v0.6.3
[INFO] [stderr]    Compiling logos-derive v0.12.0
[INFO] [stderr]    Compiling sylt-macro v0.1.0
[INFO] [stderr]    Compiling lingon-macro v0.1.0
[INFO] [stderr]     Checking luminance v0.43.2
[INFO] [stderr]     Checking luminance-gl v0.16.1
[INFO] [stderr]     Checking luminance-windowing v0.9.3
[INFO] [stderr]     Checking luminance-glyph v0.2.0
[INFO] [stderr]     Checking logos v0.12.0
[INFO] [stderr]     Checking luminance-sdl2 v0.2.2
[INFO] [stderr]     Checking sylt-tokenizer v0.1.0
[INFO] [stderr]     Checking lingon v0.1.0
[INFO] [stderr]     Checking sylt-common v0.1.0
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking sylt-std v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `Option::<T>::insert` that must be used
[INFO] [stdout]    --> src/network.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |         global_handles.lock().unwrap().insert(HashMap::new());
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you intended to set a value, consider assignment instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Option::<T>::insert` that must be used
[INFO] [stdout]    --> src/network.rs:166:17
[INFO] [stdout]     |
[INFO] [stdout] 166 | /                 server_handle
[INFO] [stdout] 167 | |                     .borrow_mut()
[INFO] [stdout] 168 | |                     .insert(stream);
[INFO] [stdout]     | |____________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you intended to set a value, consider assignment instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Option::<T>::insert` that must be used
[INFO] [stdout]    --> src/network.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |         global_handles.lock().unwrap().insert(HashMap::new());
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you intended to set a value, consider assignment instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Option::<T>::insert` that must be used
[INFO] [stdout]    --> src/network.rs:166:17
[INFO] [stdout]     |
[INFO] [stdout] 166 | /                 server_handle
[INFO] [stdout] 167 | |                     .borrow_mut()
[INFO] [stdout] 168 | |                     .insert(stream);
[INFO] [stdout]     | |____________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you intended to set a value, consider assignment instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.01s
[INFO] running `Command { std: "docker" "inspect" "2e8cbb91e85c6584f7549e07fc7ed7e19999081b147dd29c30d74a0ca14e2d89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e8cbb91e85c6584f7549e07fc7ed7e19999081b147dd29c30d74a0ca14e2d89", kill_on_drop: false }`
[INFO] [stdout] 2e8cbb91e85c6584f7549e07fc7ed7e19999081b147dd29c30d74a0ca14e2d89