[INFO] cloning repository https://github.com/sile/dg
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sile/dg" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsile%2Fdg", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsile%2Fdg'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0ba3f6e789448c0c02fd7b8d4dbcdb3faf74603a
[INFO] checking sile/dg against master#c724b67e1b474262917a5154d74e7072267593fe for pr-74315
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsile%2Fdg" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sile/dg on toolchain c724b67e1b474262917a5154d74e7072267593fe
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sile/dg
[INFO] finished tweaking git repo https://github.com/sile/dg
[INFO] tweaked toml for git repo https://github.com/sile/dg written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/sile/dg already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "metadata" "--no-deps" "--format-version=1", 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] 271aa8b958ae7c37ccc741280415e7690092807f35f48d2b3bf3fb520bdeb619
[INFO] running `Command { std: "docker" "start" "-a" "271aa8b958ae7c37ccc741280415e7690092807f35f48d2b3bf3fb520bdeb619", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "271aa8b958ae7c37ccc741280415e7690092807f35f48d2b3bf3fb520bdeb619", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "271aa8b958ae7c37ccc741280415e7690092807f35f48d2b3bf3fb520bdeb619", kill_on_drop: false }`
[INFO] [stdout] 271aa8b958ae7c37ccc741280415e7690092807f35f48d2b3bf3fb520bdeb619
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "check" "--frozen" "--all" "--all-targets" "--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] 3b1d41995ff96daf0dc07230f5a01db338f2eabb36c287cf83994ce684de8df3
[INFO] running `Command { std: "docker" "start" "-a" "3b1d41995ff96daf0dc07230f5a01db338f2eabb36c287cf83994ce684de8df3", kill_on_drop: false }`
[INFO] [stderr]     Checking slog v2.2.3
[INFO] [stderr]     Checking trackable v0.2.17
[INFO] [stderr]     Checking nom v2.2.1
[INFO] [stderr]     Checking nbchan v0.1.2
[INFO] [stderr]     Checking splay_tree v0.2.10
[INFO] [stderr]    Compiling serde v1.0.66
[INFO] [stderr]     Checking atomic_immut v0.1.4
[INFO] [stderr]     Checking rand_core v0.2.1
[INFO] [stderr]     Checking siphasher v0.2.2
[INFO] [stderr]     Checking inotify-sys v0.1.2
[INFO] [stderr]     Checking isatty v0.1.8
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]    Compiling proc-macro2 v0.4.6
[INFO] [stderr]    Compiling num-integer v0.1.38
[INFO] [stderr]     Checking term v0.5.1
[INFO] [stderr]     Checking mio v0.6.14
[INFO] [stderr]    Compiling rustc_version v0.2.2
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking clap v2.31.2
[INFO] [stderr]     Checking inotify v0.5.1
[INFO] [stderr]     Checking rand v0.5.1
[INFO] [stderr]     Checking slog-scope v4.0.1
[INFO] [stderr]     Checking slog-async v2.3.0
[INFO] [stderr]    Compiling procinfo v0.4.2
[INFO] [stderr]     Checking slog-stdlog v3.0.2
[INFO] [stderr]    Compiling quote v0.6.3
[INFO] [stderr]    Compiling syn v0.14.2
[INFO] [stderr]     Checking fibers v0.1.10
[INFO] [stderr]     Checking chrono v0.4.3
[INFO] [stderr]     Checking fibers_inotify v0.1.1
[INFO] [stderr]     Checking scalable_cuckoo_filter v0.1.2
[INFO] [stderr]     Checking slog-term v2.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.66
[INFO] [stderr]     Checking prometrics v0.1.11
[INFO] [stderr]     Checking tasque v0.1.4
[INFO] [stderr]     Checking fibers_tasque v0.1.1
[INFO] [stderr]     Checking sloggers v0.2.7
[INFO] [stderr]     Checking dg v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | derive_traits_for_trackable_error_newtype!(Error, ErrorKind);
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/error.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | derive_traits_for_trackable_error_newtype!(Error, ErrorKind);
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | derive_traits_for_trackable_error_newtype!(Error, ErrorKind);
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/error.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | derive_traits_for_trackable_error_newtype!(Error, ErrorKind);
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.64s
[INFO] running `Command { std: "docker" "inspect" "3b1d41995ff96daf0dc07230f5a01db338f2eabb36c287cf83994ce684de8df3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b1d41995ff96daf0dc07230f5a01db338f2eabb36c287cf83994ce684de8df3", kill_on_drop: false }`
[INFO] [stdout] 3b1d41995ff96daf0dc07230f5a01db338f2eabb36c287cf83994ce684de8df3