[INFO] cloning repository https://github.com/shan-by/rustexamples
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shan-by/rustexamples" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshan-by%2Frustexamples", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshan-by%2Frustexamples'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bf616338543a9c3dc1c1138a68c0a39c12d9e657
[INFO] checking shan-by/rustexamples against try#901e6d56697c79b2e80df6a487b2318ec6f57ee3 for pr-142287
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshan-by%2Frustexamples" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shan-by/rustexamples on toolchain 901e6d56697c79b2e80df6a487b2318ec6f57ee3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/shan-by/rustexamples
[INFO] finished tweaking git repo https://github.com/shan-by/rustexamples
[INFO] tweaked toml for git repo https://github.com/shan-by/rustexamples written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/shan-by/rustexamples 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" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b65a6e87171794a259245fae4a54ec514df1dcfb7297a7fe766075751614e036
[INFO] running `Command { std: "docker" "start" "-a" "b65a6e87171794a259245fae4a54ec514df1dcfb7297a7fe766075751614e036", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b65a6e87171794a259245fae4a54ec514df1dcfb7297a7fe766075751614e036", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b65a6e87171794a259245fae4a54ec514df1dcfb7297a7fe766075751614e036", kill_on_drop: false }`
[INFO] [stdout] b65a6e87171794a259245fae4a54ec514df1dcfb7297a7fe766075751614e036
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0621279f0d7c2dd0adee3379c22a88ff87e30258ce84f9bf0461486f4aa10ae1
[INFO] running `Command { std: "docker" "start" "-a" "0621279f0d7c2dd0adee3379c22a88ff87e30258ce84f9bf0461486f4aa10ae1", kill_on_drop: false }`
[INFO] [stderr]     Checking rustexamples v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: named argument `rgb1` is not used by name
[INFO] [stdout]   --> src/main.rs:60:20
[INFO] [stdout]    |
[INFO] [stdout] 60 |     println!("{}", rgb1=RGB(128, 255, 90));
[INFO] [stdout]    |               --   ^^^^ this named argument is referred to by position in formatting string
[INFO] [stdout]    |               |
[INFO] [stdout]    |               this formatting argument uses named argument `rgb1` by position
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(named_arguments_used_positionally)]` on by default
[INFO] [stdout] help: use the named argument by name to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 60 |     println!("{rgb1}", rgb1=RGB(128, 255, 90));
[INFO] [stdout]    |                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: named argument `rgb1` is not used by name
[INFO] [stdout]   --> src/main.rs:61:20
[INFO] [stdout]    |
[INFO] [stdout] 61 |     println!("{}", rgb1=RGB(0, 3, 254));
[INFO] [stdout]    |               --   ^^^^ this named argument is referred to by position in formatting string
[INFO] [stdout]    |               |
[INFO] [stdout]    |               this formatting argument uses named argument `rgb1` by position
[INFO] [stdout]    |
[INFO] [stdout] help: use the named argument by name to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 61 |     println!("{rgb1}", rgb1=RGB(0, 3, 254));
[INFO] [stdout]    |                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: named argument `rgb1` is not used by name
[INFO] [stdout]   --> src/main.rs:62:20
[INFO] [stdout]    |
[INFO] [stdout] 62 |     println!("{}", rgb1=RGB(0, 0, 0));
[INFO] [stdout]    |               --   ^^^^ this named argument is referred to by position in formatting string
[INFO] [stdout]    |               |
[INFO] [stdout]    |               this formatting argument uses named argument `rgb1` by position
[INFO] [stdout]    |
[INFO] [stdout] help: use the named argument by name to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 62 |     println!("{rgb1}", rgb1=RGB(0, 0, 0));
[INFO] [stdout]    |                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: named argument `rgb1` is not used by name
[INFO] [stdout]   --> src/main.rs:60:20
[INFO] [stdout]    |
[INFO] [stdout] 60 |     println!("{}", rgb1=RGB(128, 255, 90));
[INFO] [stdout]    |               --   ^^^^ this named argument is referred to by position in formatting string
[INFO] [stdout]    |               |
[INFO] [stdout]    |               this formatting argument uses named argument `rgb1` by position
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(named_arguments_used_positionally)]` on by default
[INFO] [stdout] help: use the named argument by name to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 60 |     println!("{rgb1}", rgb1=RGB(128, 255, 90));
[INFO] [stdout]    |                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: named argument `rgb1` is not used by name
[INFO] [stdout]   --> src/main.rs:61:20
[INFO] [stdout]    |
[INFO] [stdout] 61 |     println!("{}", rgb1=RGB(0, 3, 254));
[INFO] [stdout]    |               --   ^^^^ this named argument is referred to by position in formatting string
[INFO] [stdout]    |               |
[INFO] [stdout]    |               this formatting argument uses named argument `rgb1` by position
[INFO] [stdout]    |
[INFO] [stdout] help: use the named argument by name to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 61 |     println!("{rgb1}", rgb1=RGB(0, 3, 254));
[INFO] [stdout]    |                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: named argument `rgb1` is not used by name
[INFO] [stdout]   --> src/main.rs:62:20
[INFO] [stdout]    |
[INFO] [stdout] 62 |     println!("{}", rgb1=RGB(0, 0, 0));
[INFO] [stdout]    |               --   ^^^^ this named argument is referred to by position in formatting string
[INFO] [stdout]    |               |
[INFO] [stdout]    |               this formatting argument uses named argument `rgb1` by position
[INFO] [stdout]    |
[INFO] [stdout] help: use the named argument by name to avoid ambiguity
[INFO] [stdout]    |
[INFO] [stdout] 62 |     println!("{rgb1}", rgb1=RGB(0, 0, 0));
[INFO] [stdout]    |                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "0621279f0d7c2dd0adee3379c22a88ff87e30258ce84f9bf0461486f4aa10ae1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0621279f0d7c2dd0adee3379c22a88ff87e30258ce84f9bf0461486f4aa10ae1", kill_on_drop: false }`
[INFO] [stdout] 0621279f0d7c2dd0adee3379c22a88ff87e30258ce84f9bf0461486f4aa10ae1