[INFO] fetching crate qargparser 0.5.6...
[INFO] checking qargparser-0.5.6 against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] extracting crate qargparser 0.5.6 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate qargparser 0.5.6 on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", 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-2/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" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 31bd20a0654b5c41e9a32cedf4bd683e8cd651e34804befdfb6d954d111bf422
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "31bd20a0654b5c41e9a32cedf4bd683e8cd651e34804befdfb6d954d111bf422", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "31bd20a0654b5c41e9a32cedf4bd683e8cd651e34804befdfb6d954d111bf422", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31bd20a0654b5c41e9a32cedf4bd683e8cd651e34804befdfb6d954d111bf422", kill_on_drop: false }`
[INFO] [stdout] 31bd20a0654b5c41e9a32cedf4bd683e8cd651e34804befdfb6d954d111bf422
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e01153df00aec304f00f166dc8df39decd18cba0e8d26347f0bba1b103a968d6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e01153df00aec304f00f166dc8df39decd18cba0e8d26347f0bba1b103a968d6", 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: 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: 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/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/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: 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]     = note: `#[warn(dead_code)]` on by default
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[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]   = note: `#[warn(dead_code)]` on by default
[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: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.15s
[INFO] running `Command { std: "docker" "inspect" "e01153df00aec304f00f166dc8df39decd18cba0e8d26347f0bba1b103a968d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e01153df00aec304f00f166dc8df39decd18cba0e8d26347f0bba1b103a968d6", kill_on_drop: false }`
[INFO] [stdout] e01153df00aec304f00f166dc8df39decd18cba0e8d26347f0bba1b103a968d6