[INFO] crate dot 0.1.4 is already in cache
[INFO] checking dot-0.1.4 against try#6024cfef3a82f9a7688f07054f1650081bad3af5 for pr-74130
[INFO] extracting crate dot 0.1.4 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate dot 0.1.4 on toolchain 6024cfef3a82f9a7688f07054f1650081bad3af5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dot 0.1.4
[INFO] finished tweaking crates.io crate dot 0.1.4
[INFO] tweaked toml for crates.io crate dot 0.1.4 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8b3f6350830467ecec76641bfa5b7fd8a2ae138cc41bd2ffd31db5b66450c1c0
[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" "8b3f6350830467ecec76641bfa5b7fd8a2ae138cc41bd2ffd31db5b66450c1c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b3f6350830467ecec76641bfa5b7fd8a2ae138cc41bd2ffd31db5b66450c1c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b3f6350830467ecec76641bfa5b7fd8a2ae138cc41bd2ffd31db5b66450c1c0", kill_on_drop: false }`
[INFO] [stdout] 8b3f6350830467ecec76641bfa5b7fd8a2ae138cc41bd2ffd31db5b66450c1c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+6024cfef3a82f9a7688f07054f1650081bad3af5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a3e84175c398f25191d2e6ac578460c786ecff96ca22254550dc86362c1c38ec
[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" "a3e84175c398f25191d2e6ac578460c786ecff96ca22254550dc86362c1c38ec", kill_on_drop: false }`
[INFO] [stderr]     Checking dot v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:937:13
[INFO] [stdout]     |
[INFO] [stdout] 937 |             try!(w.write_all(s.as_bytes()));
[INFO] [stdout]     |             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:946:5
[INFO] [stdout]     |
[INFO] [stdout] 946 |     try!(writeln(w, &[g.kind().keyword(), " ", g.graph_id().as_slice(), " {"]));
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:950:9
[INFO] [stdout]     |
[INFO] [stdout] 950 |         try!(indent(w));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:989:9
[INFO] [stdout]     |
[INFO] [stdout] 989 |         try!(writeln(w, &text));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]     --> src/lib.rs:1000:9
[INFO] [stdout]      |
[INFO] [stdout] 1000 |         try!(indent(w));
[INFO] [stdout]      |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]     --> src/lib.rs:1051:9
[INFO] [stdout]      |
[INFO] [stdout] 1051 |         try!(writeln(w, &text));
[INFO] [stdout]      |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:937:13
[INFO] [stdout]     |
[INFO] [stdout] 937 |             try!(w.write_all(s.as_bytes()));
[INFO] [stdout]     |             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:946:5
[INFO] [stdout]     |
[INFO] [stdout] 946 |     try!(writeln(w, &[g.kind().keyword(), " ", g.graph_id().as_slice(), " {"]));
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:950:9
[INFO] [stdout]     |
[INFO] [stdout] 950 |         try!(indent(w));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:989:9
[INFO] [stdout]     |
[INFO] [stdout] 989 |         try!(writeln(w, &text));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]     --> src/lib.rs:1000:9
[INFO] [stdout]      |
[INFO] [stdout] 1000 |         try!(indent(w));
[INFO] [stdout]      |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]     --> src/lib.rs:1051:9
[INFO] [stdout]      |
[INFO] [stdout] 1051 |         try!(writeln(w, &text));
[INFO] [stdout]      |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]     --> src/lib.rs:1294:9
[INFO] [stdout]      |
[INFO] [stdout] 1294 |         try!(Read::read_to_string(&mut &*writer, &mut s));
[INFO] [stdout]      |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]     --> src/lib.rs:1592:9
[INFO] [stdout]      |
[INFO] [stdout] 1592 |         try!(Read::read_to_string(&mut &*writer, &mut s));
[INFO] [stdout]      |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `Command { std: "docker" "inspect" "a3e84175c398f25191d2e6ac578460c786ecff96ca22254550dc86362c1c38ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3e84175c398f25191d2e6ac578460c786ecff96ca22254550dc86362c1c38ec", kill_on_drop: false }`
[INFO] [stdout] a3e84175c398f25191d2e6ac578460c786ecff96ca22254550dc86362c1c38ec