[INFO] fetching crate nannou_wgpu 0.18.0... [INFO] testing nannou_wgpu-0.18.0 against beta-2022-02-22 for beta-1.60-1 [INFO] extracting crate nannou_wgpu 0.18.0 into /workspace/builds/worker-9/source [INFO] validating manifest of crates.io crate nannou_wgpu 0.18.0 on toolchain beta-2022-02-22 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate nannou_wgpu 0.18.0 [INFO] finished tweaking crates.io crate nannou_wgpu 0.18.0 [INFO] tweaked toml for crates.io crate nannou_wgpu 0.18.0 written to /workspace/builds/worker-9/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 54fe66c197d55ed1708474ce3b393cc9f8bd3ceab7f221700a2798427e5210ed [INFO] running `Command { std: "docker" "start" "-a" "54fe66c197d55ed1708474ce3b393cc9f8bd3ceab7f221700a2798427e5210ed", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "54fe66c197d55ed1708474ce3b393cc9f8bd3ceab7f221700a2798427e5210ed", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "54fe66c197d55ed1708474ce3b393cc9f8bd3ceab7f221700a2798427e5210ed", kill_on_drop: false }` [INFO] [stdout] 54fe66c197d55ed1708474ce3b393cc9f8bd3ceab7f221700a2798427e5210ed [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6e45eb950332fe5ed76f4c7f2f312a0036e94f8fa5468f7b3aae170db687ae91 [INFO] running `Command { std: "docker" "start" "-a" "6e45eb950332fe5ed76f4c7f2f312a0036e94f8fa5468f7b3aae170db687ae91", kill_on_drop: false }` [INFO] [stderr] Compiling once_cell v1.9.0 [INFO] [stderr] Compiling bit-vec v0.6.3 [INFO] [stderr] Compiling khronos-egl v4.1.0 [INFO] [stderr] Compiling hexf-parse v0.2.1 [INFO] [stderr] Compiling cfg_aliases v0.1.1 [INFO] [stderr] Compiling futures-util v0.3.21 [INFO] [stderr] Compiling inplace_it v0.3.3 [INFO] [stderr] Compiling glow v0.11.2 [INFO] [stderr] Compiling profiling v1.0.5 [INFO] [stderr] Compiling renderdoc-sys v0.7.1 [INFO] [stderr] Compiling gpu-descriptor-types v0.1.1 [INFO] [stderr] Compiling gpu-alloc-types v0.2.0 [INFO] [stderr] Compiling codespan-reporting v0.11.1 [INFO] [stderr] Compiling raw-window-handle v0.4.2 [INFO] [stderr] Compiling wgpu-types v0.11.0 [INFO] [stderr] Compiling ash v0.33.3+1.2.191 [INFO] [stderr] Compiling spirv v0.2.0+1.5.4 [INFO] [stderr] Compiling futures-macro v0.3.21 [INFO] [stderr] Compiling ahash v0.7.6 [INFO] [stderr] Compiling wgpu-core v0.11.3 [INFO] [stderr] Compiling bit-set v0.5.2 [INFO] [stderr] Compiling gpu-alloc v0.5.3 [INFO] [stderr] Compiling raw-window-handle v0.3.4 [INFO] [stderr] Compiling hashbrown v0.11.2 [INFO] [stderr] Compiling indexmap v1.8.0 [INFO] [stderr] Compiling gpu-descriptor v0.2.2 [INFO] [stderr] Compiling naga v0.7.3 [INFO] [stderr] Compiling futures-executor v0.3.21 [INFO] [stderr] Compiling futures v0.3.21 [INFO] [stderr] Compiling wgpu-hal v0.11.5 [INFO] [stderr] Compiling wgpu v0.11.1 [INFO] [stderr] Compiling nannou_wgpu v0.18.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field is never read: `bind_group_layout` [INFO] [stdout] --> src/texture/reshaper/mod.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 13 | bind_group_layout: wgpu::BindGroupLayout, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] note: `Reshaper` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/texture/reshaper/mod.rs:9:10 [INFO] [stdout] | [INFO] [stdout] 9 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `sampler` [INFO] [stdout] --> src/texture/reshaper/mod.rs:16:5 [INFO] [stdout] | [INFO] [stdout] 16 | sampler: wgpu::Sampler, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Reshaper` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/texture/reshaper/mod.rs:9:10 [INFO] [stdout] | [INFO] [stdout] 9 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `uniform_buffer` [INFO] [stdout] --> src/texture/reshaper/mod.rs:17:5 [INFO] [stdout] | [INFO] [stdout] 17 | uniform_buffer: Option, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Reshaper` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/texture/reshaper/mod.rs:9:10 [INFO] [stdout] | [INFO] [stdout] 9 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 28.23s [INFO] running `Command { std: "docker" "inspect" "6e45eb950332fe5ed76f4c7f2f312a0036e94f8fa5468f7b3aae170db687ae91", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6e45eb950332fe5ed76f4c7f2f312a0036e94f8fa5468f7b3aae170db687ae91", kill_on_drop: false }` [INFO] [stdout] 6e45eb950332fe5ed76f4c7f2f312a0036e94f8fa5468f7b3aae170db687ae91 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] dbac99ac7d73027686a3a0e3008ef7615961b95e77c98f6b85f76c7f5624082f [INFO] running `Command { std: "docker" "start" "-a" "dbac99ac7d73027686a3a0e3008ef7615961b95e77c98f6b85f76c7f5624082f", kill_on_drop: false }` [INFO] [stderr] Compiling nannou_wgpu v0.18.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field is never read: `bind_group_layout` [INFO] [stdout] --> src/texture/reshaper/mod.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 13 | bind_group_layout: wgpu::BindGroupLayout, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] note: `Reshaper` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/texture/reshaper/mod.rs:9:10 [INFO] [stdout] | [INFO] [stdout] 9 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `sampler` [INFO] [stdout] --> src/texture/reshaper/mod.rs:16:5 [INFO] [stdout] | [INFO] [stdout] 16 | sampler: wgpu::Sampler, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Reshaper` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/texture/reshaper/mod.rs:9:10 [INFO] [stdout] | [INFO] [stdout] 9 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `uniform_buffer` [INFO] [stdout] --> src/texture/reshaper/mod.rs:17:5 [INFO] [stdout] | [INFO] [stdout] 17 | uniform_buffer: Option, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Reshaper` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/texture/reshaper/mod.rs:9:10 [INFO] [stdout] | [INFO] [stdout] 9 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `bind_group_layout` [INFO] [stdout] --> src/texture/reshaper/mod.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 13 | bind_group_layout: wgpu::BindGroupLayout, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] note: `Reshaper` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/texture/reshaper/mod.rs:9:10 [INFO] [stdout] | [INFO] [stdout] 9 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `sampler` [INFO] [stdout] --> src/texture/reshaper/mod.rs:16:5 [INFO] [stdout] | [INFO] [stdout] 16 | sampler: wgpu::Sampler, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Reshaper` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/texture/reshaper/mod.rs:9:10 [INFO] [stdout] | [INFO] [stdout] 9 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `uniform_buffer` [INFO] [stdout] --> src/texture/reshaper/mod.rs:17:5 [INFO] [stdout] | [INFO] [stdout] 17 | uniform_buffer: Option, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: `Reshaper` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] --> src/texture/reshaper/mod.rs:9:10 [INFO] [stdout] | [INFO] [stdout] 9 | #[derive(Debug)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.99s [INFO] running `Command { std: "docker" "inspect" "dbac99ac7d73027686a3a0e3008ef7615961b95e77c98f6b85f76c7f5624082f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dbac99ac7d73027686a3a0e3008ef7615961b95e77c98f6b85f76c7f5624082f", kill_on_drop: false }` [INFO] [stdout] dbac99ac7d73027686a3a0e3008ef7615961b95e77c98f6b85f76c7f5624082f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 86a56e8c9cee4e1c137c5f2488553396bb787ab0dc35c18b5aedb35391de3942 [INFO] running `Command { std: "docker" "start" "-a" "86a56e8c9cee4e1c137c5f2488553396bb787ab0dc35c18b5aedb35391de3942", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] warning: field is never read: `bind_group_layout` [INFO] [stderr] --> src/texture/reshaper/mod.rs:13:5 [INFO] [stderr] | [INFO] [stderr] 13 | bind_group_layout: wgpu::BindGroupLayout, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] note: `Reshaper` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/texture/reshaper/mod.rs:9:10 [INFO] [stderr] | [INFO] [stderr] 9 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: field is never read: `sampler` [INFO] [stderr] --> src/texture/reshaper/mod.rs:16:5 [INFO] [stderr] | [INFO] [stderr] 16 | sampler: wgpu::Sampler, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `Reshaper` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/texture/reshaper/mod.rs:9:10 [INFO] [stderr] | [INFO] [stderr] 9 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: field is never read: `uniform_buffer` [INFO] [stderr] --> src/texture/reshaper/mod.rs:17:5 [INFO] [stderr] | [INFO] [stderr] 17 | uniform_buffer: Option, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] note: `Reshaper` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] --> src/texture/reshaper/mod.rs:9:10 [INFO] [stderr] | [INFO] [stderr] 9 | #[derive(Debug)] [INFO] [stderr] | ^^^^^ [INFO] [stderr] = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: `nannou_wgpu` (lib) generated 3 warnings [INFO] [stderr] warning: `nannou_wgpu` (lib test) generated 3 warnings (3 duplicates) [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.16s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/nannou_wgpu-86a2d37d4571d0ba) [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] [stderr] Doc-tests nannou_wgpu [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test src/texture/mod.rs - texture::ViewBuilder::layer (line 616) ... ignored [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "86a56e8c9cee4e1c137c5f2488553396bb787ab0dc35c18b5aedb35391de3942", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "86a56e8c9cee4e1c137c5f2488553396bb787ab0dc35c18b5aedb35391de3942", kill_on_drop: false }` [INFO] [stdout] 86a56e8c9cee4e1c137c5f2488553396bb787ab0dc35c18b5aedb35391de3942