[INFO] cloning repository https://github.com/fcsonline/trawler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fcsonline/trawler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffcsonline%2Ftrawler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffcsonline%2Ftrawler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4360162f2d7a64e0b931dc238e6d00ec359e1ae3
[INFO] checking fcsonline/trawler against master#50e1dc1536264ab71c0850f346b12309477f29f7 for pr-85073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffcsonline%2Ftrawler" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fcsonline/trawler on toolchain 50e1dc1536264ab71c0850f346b12309477f29f7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fcsonline/trawler
[INFO] finished tweaking git repo https://github.com/fcsonline/trawler
[INFO] tweaked toml for git repo https://github.com/fcsonline/trawler written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/fcsonline/trawler already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 66876035a1b31b9f68ec23611816978644bd425ee40e4e33985c84cec6c3d26a
[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" "66876035a1b31b9f68ec23611816978644bd425ee40e4e33985c84cec6c3d26a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "66876035a1b31b9f68ec23611816978644bd425ee40e4e33985c84cec6c3d26a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66876035a1b31b9f68ec23611816978644bd425ee40e4e33985c84cec6c3d26a", kill_on_drop: false }`
[INFO] [stdout] 66876035a1b31b9f68ec23611816978644bd425ee40e4e33985c84cec6c3d26a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 609af0baceeac39116c67f4df4daf1855999b2e420895a2695c44c552a6e79b3
[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" "609af0baceeac39116c67f4df4daf1855999b2e420895a2695c44c552a6e79b3", kill_on_drop: false }`
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking slab v0.4.1
[INFO] [stderr]     Checking same-file v1.0.4
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking filetime v0.2.4
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking walkdir v2.2.7
[INFO] [stderr]     Checking smallvec v0.6.7
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]     Checking tokio-reactor v0.1.7
[INFO] [stderr]     Checking inotify v0.6.1
[INFO] [stderr]     Checking notify v4.0.6
[INFO] [stderr]     Checking trawler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/lib/catalog.rs:8:36
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub steps: HashMap<String, Box<Step>>
[INFO] [stdout]   |                                    ^^^^ help: use `dyn`: `dyn Step`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` 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 2021 edition!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/catalog.rs:13:44
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let mut steps: HashMap<String, Box<Step>> = HashMap::new();
[INFO] [stdout]    |                                            ^^^^ help: use `dyn`: `dyn Step`
[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 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]  --> src/lib/step.rs:4:59
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fn execute(&self, buffer: &Buffer) -> std::io::Result<(Buffer)>;
[INFO] [stdout]   |                                                           ^^^^^^^^ help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/steps/write.rs:18:59
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn execute(&self, buffer: &Buffer) -> std::io::Result<(Buffer)> {
[INFO] [stdout]    |                                                           ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/steps/hash.rs:16:59
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn execute(&self, buffer: &Buffer) -> std::io::Result<(Buffer)> {
[INFO] [stdout]    |                                                           ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/steps/echo.rs:16:59
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn execute(&self, buffer: &Buffer) -> std::io::Result<(Buffer)> {
[INFO] [stdout]    |                                                           ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/steps/reverse.rs:16:59
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn execute(&self, buffer: &Buffer) -> std::io::Result<(Buffer)> {
[INFO] [stdout]    |                                                           ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/lib/catalog.rs:8:36
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub steps: HashMap<String, Box<Step>>
[INFO] [stdout]   |                                    ^^^^ help: use `dyn`: `dyn Step`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` 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 2021 edition!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib/catalog.rs:13:44
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let mut steps: HashMap<String, Box<Step>> = HashMap::new();
[INFO] [stdout]    |                                            ^^^^ help: use `dyn`: `dyn Step`
[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 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]  --> src/lib/step.rs:4:59
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fn execute(&self, buffer: &Buffer) -> std::io::Result<(Buffer)>;
[INFO] [stdout]   |                                                           ^^^^^^^^ help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/steps/write.rs:18:59
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn execute(&self, buffer: &Buffer) -> std::io::Result<(Buffer)> {
[INFO] [stdout]    |                                                           ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/steps/hash.rs:16:59
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn execute(&self, buffer: &Buffer) -> std::io::Result<(Buffer)> {
[INFO] [stdout]    |                                                           ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/steps/echo.rs:16:59
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn execute(&self, buffer: &Buffer) -> std::io::Result<(Buffer)> {
[INFO] [stdout]    |                                                           ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/steps/reverse.rs:16:59
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn execute(&self, buffer: &Buffer) -> std::io::Result<(Buffer)> {
[INFO] [stdout]    |                                                           ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.28s
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "609af0baceeac39116c67f4df4daf1855999b2e420895a2695c44c552a6e79b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "609af0baceeac39116c67f4df4daf1855999b2e420895a2695c44c552a6e79b3", kill_on_drop: false }`
[INFO] [stdout] 609af0baceeac39116c67f4df4daf1855999b2e420895a2695c44c552a6e79b3