[INFO] updating cached repository https://github.com/sile/dg
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0ba3f6e789448c0c02fd7b8d4dbcdb3faf74603a
[INFO] testing sile/dg against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsile%2Fdg" "/workspace/builds/worker-93/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-93/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sile/dg on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-93/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" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 93aadccb7a705db3a5c6f6be37e58f4c318d6e0ef8197d1d8ab6c6031fddacc6
[INFO] running `Command { std: "docker" "start" "-a" "93aadccb7a705db3a5c6f6be37e58f4c318d6e0ef8197d1d8ab6c6031fddacc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93aadccb7a705db3a5c6f6be37e58f4c318d6e0ef8197d1d8ab6c6031fddacc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93aadccb7a705db3a5c6f6be37e58f4c318d6e0ef8197d1d8ab6c6031fddacc6", kill_on_drop: false }`
[INFO] [stdout] 93aadccb7a705db3a5c6f6be37e58f4c318d6e0ef8197d1d8ab6c6031fddacc6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 13f9eccd41b3874fb4983ca40ccd3a0af031ec7389f6b12103a74c1f14a38392
[INFO] running `Command { std: "docker" "start" "-a" "13f9eccd41b3874fb4983ca40ccd3a0af031ec7389f6b12103a74c1f14a38392", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.42
[INFO] [stderr]    Compiling cfg-if v0.1.3
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling byteorder v1.2.3
[INFO] [stderr]    Compiling lazy_static v1.0.1
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]    Compiling slog v2.2.3
[INFO] [stderr]    Compiling num-integer v0.1.38
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling trackable v0.2.17
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling lazycell v0.6.0
[INFO] [stderr]    Compiling futures v0.1.21
[INFO] [stderr]    Compiling nom v2.2.1
[INFO] [stderr]    Compiling slab v0.4.0
[INFO] [stderr]    Compiling bitflags v1.0.3
[INFO] [stderr]    Compiling atomic_immut v0.1.4
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling serde v1.0.66
[INFO] [stderr]    Compiling nbchan v0.1.2
[INFO] [stderr]    Compiling splay_tree v0.2.10
[INFO] [stderr]    Compiling crossbeam v0.2.12
[INFO] [stderr]    Compiling take_mut v0.2.2
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling rand_core v0.2.1
[INFO] [stderr]    Compiling siphasher v0.2.2
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.6
[INFO] [stderr]    Compiling log v0.4.2
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling slog-scope v4.0.1
[INFO] [stderr]    Compiling textwrap v0.9.0
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling net2 v0.2.32
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling inotify-sys v0.1.2
[INFO] [stderr]    Compiling isatty v0.1.8
[INFO] [stderr]    Compiling atty v0.2.10
[INFO] [stderr]    Compiling rand v0.5.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling term v0.5.1
[INFO] [stderr]    Compiling quote v0.6.3
[INFO] [stderr]    Compiling thread_local v0.3.5
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling syn v0.14.2
[INFO] [stderr]    Compiling inotify v0.5.1
[INFO] [stderr]    Compiling slog-stdlog v3.0.2
[INFO] [stderr]    Compiling rustc_version v0.2.2
[INFO] [stderr]    Compiling clap v2.31.2
[INFO] [stderr]    Compiling mio v0.6.14
[INFO] [stderr]    Compiling scalable_cuckoo_filter v0.1.2
[INFO] [stderr]    Compiling slog-async v2.3.0
[INFO] [stderr]    Compiling fibers v0.1.10
[INFO] [stderr]    Compiling chrono v0.4.3
[INFO] [stderr]    Compiling procinfo v0.4.2
[INFO] [stderr]    Compiling fibers_inotify v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.66
[INFO] [stderr]    Compiling slog-term v2.4.0
[INFO] [stderr]    Compiling prometrics v0.1.11
[INFO] [stderr]    Compiling sloggers v0.2.7
[INFO] [stderr]    Compiling tasque v0.1.4
[INFO] [stderr]    Compiling fibers_tasque v0.1.1
[INFO] [stderr]    Compiling dg v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `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 the macro `derive_traits_for_trackable_error_newtype` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `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 the macro `derive_traits_for_trackable_error_newtype` (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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 40.89s
[INFO] running `Command { std: "docker" "inspect" "13f9eccd41b3874fb4983ca40ccd3a0af031ec7389f6b12103a74c1f14a38392", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13f9eccd41b3874fb4983ca40ccd3a0af031ec7389f6b12103a74c1f14a38392", kill_on_drop: false }`
[INFO] [stdout] 13f9eccd41b3874fb4983ca40ccd3a0af031ec7389f6b12103a74c1f14a38392
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 95561b564b6ea04371301dd1d609292b6eddbcf2dff6ec7d07499831aba3b4c3
[INFO] running `Command { std: "docker" "start" "-a" "95561b564b6ea04371301dd1d609292b6eddbcf2dff6ec7d07499831aba3b4c3", kill_on_drop: false }`
[INFO] [stdout] warning: use of deprecated associated function `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 the macro `derive_traits_for_trackable_error_newtype` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling dg v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `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 the macro `derive_traits_for_trackable_error_newtype` (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: use of deprecated associated function `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 the macro `derive_traits_for_trackable_error_newtype` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `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 the macro `derive_traits_for_trackable_error_newtype` (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] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "95561b564b6ea04371301dd1d609292b6eddbcf2dff6ec7d07499831aba3b4c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95561b564b6ea04371301dd1d609292b6eddbcf2dff6ec7d07499831aba3b4c3", kill_on_drop: false }`
[INFO] [stdout] 95561b564b6ea04371301dd1d609292b6eddbcf2dff6ec7d07499831aba3b4c3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e3005e08c832f040c8bc1bbe155ab0893510bc8089a8cbc157ec154a147e290e
[INFO] running `Command { std: "docker" "start" "-a" "e3005e08c832f040c8bc1bbe155ab0893510bc8089a8cbc157ec154a147e290e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/error.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | derive_traits_for_trackable_error_newtype!(Error, ErrorKind);
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in the macro `derive_traits_for_trackable_error_newtype` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | derive_traits_for_trackable_error_newtype!(Error, ErrorKind);
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `derive_traits_for_trackable_error_newtype` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `dg` (lib) generated 2 warnings
[INFO] [stderr] warning: `dg` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.37s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/dg-8dfd0d862ab4f159)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/dg-03c06c582951992f)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests dg
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e3005e08c832f040c8bc1bbe155ab0893510bc8089a8cbc157ec154a147e290e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3005e08c832f040c8bc1bbe155ab0893510bc8089a8cbc157ec154a147e290e", kill_on_drop: false }`
[INFO] [stdout] e3005e08c832f040c8bc1bbe155ab0893510bc8089a8cbc157ec154a147e290e