[INFO] cloning repository https://github.com/wa7sa34cx/rust-reference
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wa7sa34cx/rust-reference" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwa7sa34cx%2Frust-reference", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwa7sa34cx%2Frust-reference'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e8b8381a7979ee38d68e7873c8eb2ac672b6f28f
[INFO] checking wa7sa34cx/rust-reference against master#7bdae134cba57426d3c56b5de737a351762445e1 for pr-123794
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwa7sa34cx%2Frust-reference" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wa7sa34cx/rust-reference on toolchain 7bdae134cba57426d3c56b5de737a351762445e1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7bdae134cba57426d3c56b5de737a351762445e1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wa7sa34cx/rust-reference
[INFO] finished tweaking git repo https://github.com/wa7sa34cx/rust-reference
[INFO] tweaked toml for git repo https://github.com/wa7sa34cx/rust-reference written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/wa7sa34cx/rust-reference 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" "+7bdae134cba57426d3c56b5de737a351762445e1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+7bdae134cba57426d3c56b5de737a351762445e1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 56db83a0a55cdb71f53d4acdee6892031873193301b031821b0384545cfb8f4b
[INFO] running `Command { std: "docker" "start" "-a" "56db83a0a55cdb71f53d4acdee6892031873193301b031821b0384545cfb8f4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56db83a0a55cdb71f53d4acdee6892031873193301b031821b0384545cfb8f4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56db83a0a55cdb71f53d4acdee6892031873193301b031821b0384545cfb8f4b", kill_on_drop: false }`
[INFO] [stdout] 56db83a0a55cdb71f53d4acdee6892031873193301b031821b0384545cfb8f4b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+7bdae134cba57426d3c56b5de737a351762445e1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 66667f8464cacf3f340c3f8fb7108a73906c9c4161ca99844761fac3950d5675
[INFO] running `Command { std: "docker" "start" "-a" "66667f8464cacf3f340c3f8fb7108a73906c9c4161ca99844761fac3950d5675", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-reference v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]   --> src/main.rs:6:32
[INFO] [stdout]    |
[INFO] [stdout] 6  |     ($t:tt, $v:tt) => { $t + $v; };
[INFO] [stdout]    |                                ^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     let x = plus!(5.0, 7.2);
[INFO] [stdout]    |             --------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]    = note: `#[warn(semicolon_in_expressions_from_macros)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `plus` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]   --> src/main.rs:6:32
[INFO] [stdout]    |
[INFO] [stdout] 6  |     ($t:tt, $v:tt) => { $t + $v; };
[INFO] [stdout]    |                                ^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     let x = plus!(5.0, 7.2);
[INFO] [stdout]    |             --------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]    = note: `#[warn(semicolon_in_expressions_from_macros)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `plus` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unsafe_example` is never used
[INFO] [stdout]   --> src/main.rs:33:10
[INFO] [stdout]    |
[INFO] [stdout] 33 | async fn unsafe_example(x: &u32) {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `x` is never read
[INFO] [stdout]   --> src/main.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 38 | struct MyStruct {
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] 39 |     x: u32,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MyStruct` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unsafe_example` is never used
[INFO] [stdout]   --> src/main.rs:33:10
[INFO] [stdout]    |
[INFO] [stdout] 33 | async fn unsafe_example(x: &u32) {
[INFO] [stdout]    |          ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `x` is never read
[INFO] [stdout]   --> src/main.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 38 | struct MyStruct {
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] 39 |     x: u32,
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MyStruct` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rust-reference v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: failed to write on-disk future incompatible report
[INFO] [stderr] 
[INFO] [stderr] No space left on device (os error 28)
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "66667f8464cacf3f340c3f8fb7108a73906c9c4161ca99844761fac3950d5675", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66667f8464cacf3f340c3f8fb7108a73906c9c4161ca99844761fac3950d5675", kill_on_drop: false }`
[INFO] [stdout] 66667f8464cacf3f340c3f8fb7108a73906c9c4161ca99844761fac3950d5675