[INFO] fetching crate qargparser 0.5.6...
[INFO] checking qargparser-0.5.6 against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] extracting crate qargparser 0.5.6 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate qargparser 0.5.6 on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate qargparser 0.5.6
[INFO] finished tweaking crates.io crate qargparser 0.5.6
[INFO] tweaked toml for crates.io crate qargparser 0.5.6 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate crates.io crate qargparser 0.5.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded qpprint v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f978d2a75cb60dad72a6e4e1e80c6753a80dabc1e542e9f8ec8a99eed138f885
[INFO] running `Command { std: "docker" "start" "-a" "f978d2a75cb60dad72a6e4e1e80c6753a80dabc1e542e9f8ec8a99eed138f885", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f978d2a75cb60dad72a6e4e1e80c6753a80dabc1e542e9f8ec8a99eed138f885", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f978d2a75cb60dad72a6e4e1e80c6753a80dabc1e542e9f8ec8a99eed138f885", kill_on_drop: false }`
[INFO] [stdout] f978d2a75cb60dad72a6e4e1e80c6753a80dabc1e542e9f8ec8a99eed138f885
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7290d0fab0d1dc8031939d8ecbab6af4bf2a7d9e88b3c81b9994de17cd93ca76
[INFO] running `Command { std: "docker" "start" "-a" "7290d0fab0d1dc8031939d8ecbab6af4bf2a7d9e88b3c81b9994de17cd93ca76", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]     Checking terminal_size v0.1.12
[INFO] [stderr]     Checking qpprint v0.1.1
[INFO] [stderr]     Checking qargparser v0.5.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `do_help`
[INFO] [stdout]    --> src/prsrutil.rs:116:5
[INFO] [stdout]     |
[INFO] [stdout] 116 |     pub(super) do_help: bool,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `fname`
[INFO] [stdout]    --> src/prsrutil.rs:118:5
[INFO] [stdout]     |
[INFO] [stdout] 118 |     pub(super) fname: String
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `do_help`
[INFO] [stdout]    --> src/spec.rs:528:5
[INFO] [stdout]     |
[INFO] [stdout] 528 |     pub(super) do_help: bool,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `verbosity`
[INFO] [stdout]    --> src/spec.rs:529:5
[INFO] [stdout]     |
[INFO] [stdout] 529 |     pub(super) verbosity: u8,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `fname`
[INFO] [stdout]    --> src/spec.rs:530:5
[INFO] [stdout]     |
[INFO] [stdout] 530 |     pub(super) fname: String,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `verbose_proc`
[INFO] [stdout]    --> src/spec.rs:540:17
[INFO] [stdout]     |
[INFO] [stdout] 540 |   pub(super) fn verbose_proc(
[INFO] [stdout]     |                 ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `args_proc`
[INFO] [stdout]    --> src/spec.rs:561:17
[INFO] [stdout]     |
[INFO] [stdout] 561 |   pub(super) fn args_proc(
[INFO] [stdout]     |                 ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mkhelp`
[INFO] [stdout]    --> src/spec.rs:569:17
[INFO] [stdout]     |
[INFO] [stdout] 569 |   pub(super) fn mkhelp(sopt: bool, lopt: bool) -> super::Spec<TestCtx> {
[INFO] [stdout]     |                 ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mkfile`
[INFO] [stdout]    --> src/spec.rs:579:17
[INFO] [stdout]     |
[INFO] [stdout] 579 |   pub(super) fn mkfile(
[INFO] [stdout]     |                 ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mkparam`
[INFO] [stdout]    --> src/spec.rs:604:17
[INFO] [stdout]     |
[INFO] [stdout] 604 |   pub(super) fn mkparam(
[INFO] [stdout]     |                 ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> tests/posarg.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> tests/optarg.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> tests/exit.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> tests/tests.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `do_help`
[INFO] [stdout]  --> tests/exit.rs:7:3
[INFO] [stdout]   |
[INFO] [stdout] 7 |   do_help: bool,
[INFO] [stdout]   |   ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `fname`
[INFO] [stdout]  --> tests/exit.rs:8:3
[INFO] [stdout]   |
[INFO] [stdout] 8 |   fname: String,
[INFO] [stdout]   |   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `file_proc`
[INFO] [stdout]   --> tests/exit.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn file_proc(
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mkfile`
[INFO] [stdout]   --> tests/exit.rs:53:10
[INFO] [stdout]    |
[INFO] [stdout] 53 |   pub fn mkfile() -> super::arg::Spec<super::MyContext> {
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `fname`
[INFO] [stdout]   --> tests/tests.rs:15:3
[INFO] [stdout]    |
[INFO] [stdout] 15 |   fname: String
[INFO] [stdout]    |   ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.91s
[INFO] running `Command { std: "docker" "inspect" "7290d0fab0d1dc8031939d8ecbab6af4bf2a7d9e88b3c81b9994de17cd93ca76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7290d0fab0d1dc8031939d8ecbab6af4bf2a7d9e88b3c81b9994de17cd93ca76", kill_on_drop: false }`
[INFO] [stdout] 7290d0fab0d1dc8031939d8ecbab6af4bf2a7d9e88b3c81b9994de17cd93ca76