[INFO] fetching crate argh 0.1.12...
[INFO] checking argh-0.1.12 against master#b286722878e18db29a7fbe672be7c4d3b02e8e4d for pr-127655
[INFO] extracting crate argh 0.1.12 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate argh 0.1.12 on toolchain b286722878e18db29a7fbe672be7c4d3b02e8e4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate argh 0.1.12
[INFO] finished tweaking crates.io crate argh 0.1.12
[INFO] tweaked toml for crates.io crate argh 0.1.12 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate argh 0.1.12 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" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded argh_shared v0.1.12
[INFO] [stderr]   Downloaded argh_derive v0.1.12
[INFO] [stderr]   Downloaded serde_json v1.0.104
[INFO] [stderr]   Downloaded basic-toml v0.1.4
[INFO] [stderr]   Downloaded serde_derive v1.0.183
[INFO] [stderr]   Downloaded serde v1.0.183
[INFO] [stderr]   Downloaded trybuild v1.0.82
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 320d1c39296d7aab6386cb7cdb50a168bc04bd18005bf8f87543ce2ddf468a88
[INFO] running `Command { std: "docker" "start" "-a" "320d1c39296d7aab6386cb7cdb50a168bc04bd18005bf8f87543ce2ddf468a88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "320d1c39296d7aab6386cb7cdb50a168bc04bd18005bf8f87543ce2ddf468a88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "320d1c39296d7aab6386cb7cdb50a168bc04bd18005bf8f87543ce2ddf468a88", kill_on_drop: false }`
[INFO] [stdout] 320d1c39296d7aab6386cb7cdb50a168bc04bd18005bf8f87543ce2ddf468a88
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:dff56e7819e73ed36160586b3445e93eb0be776c16704aeeded9c3fb668b2384" "/opt/rustwide/cargo-home/bin/cargo" "+b286722878e18db29a7fbe672be7c4d3b02e8e4d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 79f721f0a98fb7501218b199b3a607dc84a0672fca83ec290f9aaf05d35bf6f1
[INFO] running `Command { std: "docker" "start" "-a" "79f721f0a98fb7501218b199b3a607dc84a0672fca83ec290f9aaf05d35bf6f1", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.183
[INFO] [stderr]    Compiling serde_derive v1.0.183
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling serde_json v1.0.104
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]    Compiling trybuild v1.0.82
[INFO] [stderr]     Checking glob v0.3.1
[INFO] [stderr]     Checking termcolor v1.2.0
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]    Compiling quote v1.0.32
[INFO] [stderr]    Compiling syn v2.0.28
[INFO] [stderr]     Checking argh_shared v0.1.12
[INFO] [stderr]     Checking basic-toml v0.1.4
[INFO] [stderr]    Compiling argh_derive v0.1.12
[INFO] [stderr]     Checking argh v0.1.12 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> tests/args_info_tests.rs:433:18
[INFO] [stdout]     |
[INFO] [stdout] 433 |         Command1(Command1Args),
[INFO] [stdout]     |         -------- ^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 433 |         Command1(()),
[INFO] [stdout]     |                  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> tests/args_info_tests.rs:434:18
[INFO] [stdout]     |
[INFO] [stdout] 434 |         Command2(Command2Args),
[INFO] [stdout]     |         -------- ^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         field in this variant
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 434 |         Command2(()),
[INFO] [stdout]     |                  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> tests/args_info_tests.rs:607:18
[INFO] [stdout]     |
[INFO] [stdout] 607 |         Command1(Command1Args),
[INFO] [stdout]     |         -------- ^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         field in this variant
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]     |
[INFO] [stdout] 607 |         Command1(()),
[INFO] [stdout]     |                  ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]     --> tests/lib.rs:1539:17
[INFO] [stdout]      |
[INFO] [stdout] 1539 |         Walking(WalkingSubcommand),
[INFO] [stdout]      |         ------- ^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |         |
[INFO] [stdout]      |         field in this variant
[INFO] [stdout]      |
[INFO] [stdout]      = note: `MeansSubcommand` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]      = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]      |
[INFO] [stdout] 1539 |         Walking(()),
[INFO] [stdout]      |                 ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]     --> tests/lib.rs:1585:17
[INFO] [stdout]      |
[INFO] [stdout] 1585 |         Walking(WalkingSubcommand),
[INFO] [stdout]      |         ------- ^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |         |
[INFO] [stdout]      |         field in this variant
[INFO] [stdout]      |
[INFO] [stdout]      = note: `MeansSubcommand` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]      |
[INFO] [stdout] 1585 |         Walking(()),
[INFO] [stdout]      |                 ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SubCommandTwo` is never constructed
[INFO] [stdout]     --> tests/lib.rs:1692:12
[INFO] [stdout]      |
[INFO] [stdout] 1692 |     struct SubCommandTwo {
[INFO] [stdout]      |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.16s
[INFO] running `Command { std: "docker" "inspect" "79f721f0a98fb7501218b199b3a607dc84a0672fca83ec290f9aaf05d35bf6f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79f721f0a98fb7501218b199b3a607dc84a0672fca83ec290f9aaf05d35bf6f1", kill_on_drop: false }`
[INFO] [stdout] 79f721f0a98fb7501218b199b3a607dc84a0672fca83ec290f9aaf05d35bf6f1
