[INFO] fetching crate vt 0.1.1...
[INFO] checking vt-0.1.1 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate vt 0.1.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate vt 0.1.1 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate vt 0.1.1
[INFO] finished tweaking crates.io crate vt 0.1.1
[INFO] tweaked toml for crates.io crate vt 0.1.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate vt 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 361b54102dc8cef2ed018bff6ad268a9c75f78a6fea7562168597b5df233c38f
[INFO] running `"docker" "start" "-a" "361b54102dc8cef2ed018bff6ad268a9c75f78a6fea7562168597b5df233c38f"`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]     Checking nix v0.15.0
[INFO] [stderr]     Checking vt v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]   --> src/ffi.rs:29:36
[INFO] [stderr]    |
[INFO] [stderr] 29 |                 let mut data: $t = ::std::mem::uninitialized();
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 66 | ioctl_get_wrapper!(vt_openqry, VT_OPENQRY, c_int);
[INFO] [stderr]    | -------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]   --> src/ffi.rs:29:36
[INFO] [stderr]    |
[INFO] [stderr] 29 |                 let mut data: $t = ::std::mem::uninitialized();
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 67 | ioctl_get_wrapper!(vt_getstate, VT_GETSTATE, VtStat);
[INFO] [stderr]    | ----------------------------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]   --> src/ffi.rs:29:36
[INFO] [stderr]    |
[INFO] [stderr] 29 |                 let mut data: $t = ::std::mem::uninitialized();
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 66 | ioctl_get_wrapper!(vt_openqry, VT_OPENQRY, c_int);
[INFO] [stderr]    | -------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]   --> src/ffi.rs:29:36
[INFO] [stderr]    |
[INFO] [stderr] 29 |                 let mut data: $t = ::std::mem::uninitialized();
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 67 | ioctl_get_wrapper!(vt_getstate, VT_GETSTATE, VtStat);
[INFO] [stderr]    | ----------------------------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> examples/blank.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     writeln!(vt, "Hello world, this is VT {}!", vt.number());
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> examples/blank.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     writeln!(vt, "Blanking in 3s...");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> examples/blank.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     writeln!(vt, "Example finished. Switching back in 3s...");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.07s
[INFO] running `"docker" "inspect" "361b54102dc8cef2ed018bff6ad268a9c75f78a6fea7562168597b5df233c38f"`
[INFO] running `"docker" "rm" "-f" "361b54102dc8cef2ed018bff6ad268a9c75f78a6fea7562168597b5df233c38f"`
[INFO] [stdout] 361b54102dc8cef2ed018bff6ad268a9c75f78a6fea7562168597b5df233c38f