[INFO] fetching crate r_tracer 1.0.4...
[INFO] checking r_tracer-1.0.4 against master#38352b01ae4af9300be03b805d6db68c45e51068 for pr-129864
[INFO] extracting crate r_tracer 1.0.4 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate r_tracer 1.0.4 on toolchain 38352b01ae4af9300be03b805d6db68c45e51068
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate r_tracer 1.0.4
[INFO] finished tweaking crates.io crate r_tracer 1.0.4
[INFO] tweaked toml for crates.io crate r_tracer 1.0.4 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 158 packages to latest compatible versions
[INFO] [stderr]       Adding anes v0.1.6 (available: v0.2.0)
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[INFO] [stderr]       Adding windows-sys v0.52.0 (available: v0.59.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pk_stl v0.3.1
[INFO] [stderr]   Downloaded minifb v0.24.0
[INFO] [stderr]   Downloaded obj-rs v0.7.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e896b34029bace45066e2c93dc3af20bbdad14a1e1a259a326ea0b79b96089c6
[INFO] running `Command { std: "docker" "start" "-a" "e896b34029bace45066e2c93dc3af20bbdad14a1e1a259a326ea0b79b96089c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e896b34029bace45066e2c93dc3af20bbdad14a1e1a259a326ea0b79b96089c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e896b34029bace45066e2c93dc3af20bbdad14a1e1a259a326ea0b79b96089c6", kill_on_drop: false }`
[INFO] [stdout] e896b34029bace45066e2c93dc3af20bbdad14a1e1a259a326ea0b79b96089c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5bc791bf97bbba45a2175f066ac9e2a096eeee2035f30192cb2f33983737db89
[INFO] running `Command { std: "docker" "start" "-a" "5bc791bf97bbba45a2175f066ac9e2a096eeee2035f30192cb2f33983737db89", kill_on_drop: false }`
[INFO] [stderr]    Compiling xml-rs v0.8.22
[INFO] [stderr]    Compiling serde v1.0.210
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[INFO] [stderr]     Checking r_tracer v1.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `black_box`
[INFO] [stdout]  --> benches/benches.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use criterion::{black_box, criterion_group, criterion_main, Criterion};
[INFO] [stdout]   |                 ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> benches/benches.rs:78:5
[INFO] [stdout]    |
[INFO] [stdout] 78 |     save_vector2d_as_png(&frame, "../Renders/render.png");
[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] 78 |     let _ = save_vector2d_as_png(&frame, "../Renders/render.png");
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.38s
[INFO] running `Command { std: "docker" "inspect" "5bc791bf97bbba45a2175f066ac9e2a096eeee2035f30192cb2f33983737db89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bc791bf97bbba45a2175f066ac9e2a096eeee2035f30192cb2f33983737db89", kill_on_drop: false }`
[INFO] [stdout] 5bc791bf97bbba45a2175f066ac9e2a096eeee2035f30192cb2f33983737db89