[INFO] fetching crate cargho 0.1.7...
[INFO] checking cargho-0.1.7 against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] extracting crate cargho 0.1.7 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate cargho 0.1.7 on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cargho 0.1.7
[INFO] finished tweaking crates.io crate cargho 0.1.7
[INFO] tweaked toml for crates.io crate cargho 0.1.7 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cargho_derive v0.1.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8b94e40ed53fb7a789999775f841b4dce06060e43077fb7ecda8100316213cc5
[INFO] running `Command { std: "docker" "start" "-a" "8b94e40ed53fb7a789999775f841b4dce06060e43077fb7ecda8100316213cc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b94e40ed53fb7a789999775f841b4dce06060e43077fb7ecda8100316213cc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b94e40ed53fb7a789999775f841b4dce06060e43077fb7ecda8100316213cc5", kill_on_drop: false }`
[INFO] [stdout] 8b94e40ed53fb7a789999775f841b4dce06060e43077fb7ecda8100316213cc5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1042abb3c1bc0bab9a0ce316553570244172e5300a3bb2b7ee5e335e3cda8641
[INFO] running `Command { std: "docker" "start" "-a" "1042abb3c1bc0bab9a0ce316553570244172e5300a3bb2b7ee5e335e3cda8641", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling cargho_shared v0.1.6
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling cargho_derive v0.1.6
[INFO] [stderr]     Checking cargho v0.1.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `msg`
[INFO] [stdout]    --> tests/lib.rs:179:9
[INFO] [stdout]     |
[INFO] [stdout] 179 |         msg: String,
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `a`
[INFO] [stdout]    --> tests/lib.rs:538:9
[INFO] [stdout]     |
[INFO] [stdout] 538 |         a: bool,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `b`
[INFO] [stdout]    --> tests/lib.rs:541:9
[INFO] [stdout]     |
[INFO] [stdout] 541 |         b: bool,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `foo`
[INFO] [stdout]    --> tests/lib.rs:557:9
[INFO] [stdout]     |
[INFO] [stdout] 557 |         foo: String,
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sub`
[INFO] [stdout]    --> tests/lib.rs:665:9
[INFO] [stdout]     |
[INFO] [stdout] 665 |         sub: HelpFirstSub,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sub`
[INFO] [stdout]    --> tests/lib.rs:673:9
[INFO] [stdout]     |
[INFO] [stdout] 673 |         sub: HelpSecondSub,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.57s
[INFO] running `Command { std: "docker" "inspect" "1042abb3c1bc0bab9a0ce316553570244172e5300a3bb2b7ee5e335e3cda8641", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1042abb3c1bc0bab9a0ce316553570244172e5300a3bb2b7ee5e335e3cda8641", kill_on_drop: false }`
[INFO] [stdout] 1042abb3c1bc0bab9a0ce316553570244172e5300a3bb2b7ee5e335e3cda8641