[INFO] fetching crate asserter 0.1.0...
[INFO] checking asserter-0.1.0 against try#99a443d6903f71d521237d8acb5a3016b534d17b for pr-83354
[INFO] extracting crate asserter 0.1.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate asserter 0.1.0 on toolchain 99a443d6903f71d521237d8acb5a3016b534d17b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate asserter 0.1.0
[INFO] finished tweaking crates.io crate asserter 0.1.0
[INFO] tweaked toml for crates.io crate asserter 0.1.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded asserter-macros v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f433f9036bed1f8d1cb27fd1b3c02f44fb27d917cc13441005a5899a941f5cfc
[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" "f433f9036bed1f8d1cb27fd1b3c02f44fb27d917cc13441005a5899a941f5cfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f433f9036bed1f8d1cb27fd1b3c02f44fb27d917cc13441005a5899a941f5cfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f433f9036bed1f8d1cb27fd1b3c02f44fb27d917cc13441005a5899a941f5cfc", kill_on_drop: false }`
[INFO] [stdout] f433f9036bed1f8d1cb27fd1b3c02f44fb27d917cc13441005a5899a941f5cfc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d624090b49889b87fe7e70989a5496685f7c9afa3dc66584d8e64803ad382bf
[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" "4d624090b49889b87fe7e70989a5496685f7c9afa3dc66584d8e64803ad382bf", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.65
[INFO] [stderr]    Compiling pmutil v0.5.3
[INFO] [stderr]    Compiling asserter-macros v0.1.0
[INFO] [stderr]     Checking asserter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `foo`
[INFO] [stdout]   --> tests/unwrap.rs:18:25
[INFO] [stdout]    |
[INFO] [stdout] 18 |     unwrap!(foo as Some(foo));
[INFO] [stdout]    |                         ^^^ help: if this is intentional, prefix it with an underscore: `_foo`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `foo`
[INFO] [stdout]   --> tests/unwrap.rs:72:36
[INFO] [stdout]    |
[INFO] [stdout] 72 |     unwrap!(foo, Complex::Struct { foo, bar });
[INFO] [stdout]    |                                    ^^^ help: try ignoring the field: `foo: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bar`
[INFO] [stdout]   --> tests/unwrap.rs:72:41
[INFO] [stdout]    |
[INFO] [stdout] 72 |     unwrap!(foo, Complex::Struct { foo, bar });
[INFO] [stdout]    |                                         ^^^ help: try ignoring the field: `bar: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains braces
[INFO] [stdout]   --> tests/unwrap.rs:68:1
[INFO] [stdout]    |
[INFO] [stdout] 68 | #[asserter]
[INFO] [stdout]    | ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]    = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout]    = note: this warning originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused attribute
[INFO] [stdout]   --> tests/unwrap.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | #[should_panic]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.86s
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4d624090b49889b87fe7e70989a5496685f7c9afa3dc66584d8e64803ad382bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d624090b49889b87fe7e70989a5496685f7c9afa3dc66584d8e64803ad382bf", kill_on_drop: false }`
[INFO] [stdout] 4d624090b49889b87fe7e70989a5496685f7c9afa3dc66584d8e64803ad382bf