[INFO] cloning repository https://github.com/thejohncrafter/Verifier
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/thejohncrafter/Verifier" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthejohncrafter%2FVerifier", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthejohncrafter%2FVerifier'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bfb6d77dec965c06f633e9a62be21dce8b6416ce
[INFO] testing thejohncrafter/Verifier against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthejohncrafter%2FVerifier" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/thejohncrafter/Verifier on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/thejohncrafter/Verifier
[INFO] finished tweaking git repo https://github.com/thejohncrafter/Verifier
[INFO] tweaked toml for git repo https://github.com/thejohncrafter/Verifier written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/thejohncrafter/Verifier already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fc065b3c833e36c7ffdd7d5cbe9fc2368b774dc2d9f4ff621745c269edcb585a
[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" "fc065b3c833e36c7ffdd7d5cbe9fc2368b774dc2d9f4ff621745c269edcb585a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc065b3c833e36c7ffdd7d5cbe9fc2368b774dc2d9f4ff621745c269edcb585a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc065b3c833e36c7ffdd7d5cbe9fc2368b774dc2d9f4ff621745c269edcb585a", kill_on_drop: false }`
[INFO] [stdout] fc065b3c833e36c7ffdd7d5cbe9fc2368b774dc2d9f4ff621745c269edcb585a
[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=warn" "-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" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] cf92ca0399e24459baf06aff60fad2e55de0aab98acb3227edcbb3c2a92b2a23
[INFO] running `Command { std: "docker" "start" "-a" "cf92ca0399e24459baf06aff60fad2e55de0aab98acb3227edcbb3c2a92b2a23", kill_on_drop: false }`
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.53
[INFO] [stderr]    Compiling syn v1.0.7
[INFO] [stderr]    Compiling smallvec v0.6.11
[INFO] [stderr]    Compiling wasm-bindgen v0.2.53
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling inotify-sys v0.1.3
[INFO] [stderr]    Compiling filetime v0.2.7
[INFO] [stderr]    Compiling inotify v0.7.0
[INFO] [stderr]    Compiling parking_lot_core v0.2.14
[INFO] [stderr]    Compiling mio v0.6.19
[INFO] [stderr]    Compiling parking_lot v0.4.8
[INFO] [stderr]    Compiling chashmap v2.2.2
[INFO] [stderr]    Compiling mio-extras v2.0.5
[INFO] [stderr]    Compiling notify v5.0.0-pre.1
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.53
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.53
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.53
[INFO] [stderr]    Compiling tipe v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/core/base_types.rs:36:22
[INFO] [stdout]    |
[INFO] [stdout] 36 |     fn format(&self, &mut dyn Write) -> Result;
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut dyn Write`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/core/base_types.rs:40:22
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn format(&self, &mut dyn Write, &dyn VarTemplate, &Term) -> Result;
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut dyn Write`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/core/base_types.rs:40:38
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn format(&self, &mut dyn Write, &dyn VarTemplate, &Term) -> Result;
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &dyn VarTemplate`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/core/base_types.rs:40:56
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn format(&self, &mut dyn Write, &dyn VarTemplate, &Term) -> Result;
[INFO] [stdout]    |                                                        ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Term`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/core/base_types.rs:44:22
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn format(&self, &mut dyn Write, &Vec<Box<Term>>) -> Result;
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut dyn Write`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/core/base_types.rs:44:38
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn format(&self, &mut dyn Write, &Vec<Box<Term>>) -> Result;
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Vec<Box<Term>>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/core/base_types.rs:48:22
[INFO] [stdout]    |
[INFO] [stdout] 48 |     fn format(&self, &mut dyn Write, &Vec<Box<Term>>) -> Result;
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut dyn Write`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/core/base_types.rs:48:38
[INFO] [stdout]    |
[INFO] [stdout] 48 |     fn format(&self, &mut dyn Write, &Vec<Box<Term>>) -> Result;
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Vec<Box<Term>>`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a closure that returns `Result`
[INFO] [stdout]    --> src/core/matcher.rs:296:55
[INFO] [stdout]     |
[INFO] [stdout] 295 |                   args.iter().try_for_each(|p| {
[INFO] [stdout]     |  __________________________________________-
[INFO] [stdout] 296 | |                     built_args.push(self.build_term(p)?);
[INFO] [stdout]     | |                                                       ^ use `.ok_or(...)?` to provide an error compatible with `std::result::Result<(), _>`
[INFO] [stdout] 297 | |                     Ok(())
[INFO] [stdout] 298 | |                 })?;
[INFO] [stdout]     | |_________________- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<Option<Infallible>>` is not implemented for `std::result::Result<(), _>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Option`s, not `Result`s, in a method that returns `Option`
[INFO] [stdout]    --> src/core/matcher.rs:298:19
[INFO] [stdout]     |
[INFO] [stdout] 270 | /     fn build_term(&self, pattern: &TermPattern) -> Option<Box<Term>> {
[INFO] [stdout] 271 | |         match pattern {
[INFO] [stdout] 272 | |             TermPattern::Meta(name) => {
[INFO] [stdout] 273 | |                 if let Some(t) = self.meta_terms.get(name) {
[INFO] [stdout] ...   |
[INFO] [stdout] 298 | |                 })?;
[INFO] [stdout]     | |                   ^ use `.ok()?` if you want to discard the `std::result::Result<Infallible, _>` error information
[INFO] [stdout] ...   |
[INFO] [stdout] 312 | |         }
[INFO] [stdout] 313 | |     }
[INFO] [stdout]     | |_____- this function returns an `Option`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::result::Result<Infallible, _>>` is not implemented for `Option<Box<base_types::Term>>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tipe`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "cf92ca0399e24459baf06aff60fad2e55de0aab98acb3227edcbb3c2a92b2a23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf92ca0399e24459baf06aff60fad2e55de0aab98acb3227edcbb3c2a92b2a23", kill_on_drop: false }`
[INFO] [stdout] cf92ca0399e24459baf06aff60fad2e55de0aab98acb3227edcbb3c2a92b2a23
