[INFO] fetching crate expectation-shared 0.1.0...
[INFO] checking expectation-shared-0.1.0 against try#32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d for pr-83312
[INFO] extracting crate expectation-shared 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate expectation-shared 0.1.0 on toolchain 32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate expectation-shared 0.1.0
[INFO] finished tweaking crates.io crate expectation-shared 0.1.0
[INFO] tweaked toml for crates.io crate expectation-shared 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e13828ecbf2ab1c010c7c5aa1de8fe5a99515177cdcccee5c2f7afc84fcd221e
[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" "e13828ecbf2ab1c010c7c5aa1de8fe5a99515177cdcccee5c2f7afc84fcd221e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e13828ecbf2ab1c010c7c5aa1de8fe5a99515177cdcccee5c2f7afc84fcd221e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e13828ecbf2ab1c010c7c5aa1de8fe5a99515177cdcccee5c2f7afc84fcd221e", kill_on_drop: false }`
[INFO] [stdout] e13828ecbf2ab1c010c7c5aa1de8fe5a99515177cdcccee5c2f7afc84fcd221e
[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=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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+32cb8dc6fdc8140b91f4d17c4883e528db4e7e6d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 53d59ed51790ecdbab47f53f34ecaf78d09c0abbffa55534532b3e750a11088a
[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" "53d59ed51790ecdbab47f53f34ecaf78d09c0abbffa55534532b3e750a11088a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.64
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]     Checking expectation-shared v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/filesystem.rs:24:32
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn duplicate(&self) -> Box<FileSystem>;
[INFO] [stdout]    |                                ^^^^^^^^^^ help: use `dyn`: `dyn FileSystem`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/filesystem.rs:25:45
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn subsystem(&self, path: &Path) -> Box<FileSystem>;
[INFO] [stdout]    |                                             ^^^^^^^^^^ help: use `dyn`: `dyn FileSystem`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/filesystem.rs:27:41
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn read(&self, path: &Path, f: &mut FnMut(&mut ReadSeek) -> IoResult<()>) -> IoResult<()>;
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut ReadSeek) -> IoResult<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/filesystem.rs:27:52
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn read(&self, path: &Path, f: &mut FnMut(&mut ReadSeek) -> IoResult<()>) -> IoResult<()>;
[INFO] [stdout]    |                                                    ^^^^^^^^ help: use `dyn`: `dyn ReadSeek`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/filesystem.rs:28:42
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn write(&self, path: &Path, f: &mut FnMut(&mut Write) -> IoResult<()>) -> IoResult<()>;
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut Write) -> IoResult<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/filesystem.rs:28:53
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn write(&self, path: &Path, f: &mut FnMut(&mut Write) -> IoResult<()>) -> IoResult<()>;
[INFO] [stdout]    |                                                     ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/filesystem.rs:54:45
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn subsystem(&self, path: &Path) -> Box<FileSystem> {
[INFO] [stdout]    |                                             ^^^^^^^^^^ help: use `dyn`: `dyn FileSystem`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/filesystem.rs:66:32
[INFO] [stdout]    |
[INFO] [stdout] 66 |     fn duplicate(&self) -> Box<FileSystem> {
[INFO] [stdout]    |                                ^^^^^^^^^^ help: use `dyn`: `dyn FileSystem`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/filesystem.rs:75:41
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn read(&self, path: &Path, f: &mut FnMut(&mut ReadSeek) -> IoResult<()>) -> IoResult<()> {
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut ReadSeek) -> IoResult<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/filesystem.rs:75:52
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn read(&self, path: &Path, f: &mut FnMut(&mut ReadSeek) -> IoResult<()>) -> IoResult<()> {
[INFO] [stdout]    |                                                    ^^^^^^^^ help: use `dyn`: `dyn ReadSeek`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/filesystem.rs:86:42
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn write(&self, path: &Path, f: &mut FnMut(&mut Write) -> IoResult<()>) -> IoResult<()> {
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut Write) -> IoResult<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/filesystem.rs:86:53
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn write(&self, path: &Path, f: &mut FnMut(&mut Write) -> IoResult<()>) -> IoResult<()> {
[INFO] [stdout]    |                                                     ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/filesystem.rs:115:45
[INFO] [stdout]     |
[INFO] [stdout] 115 |     fn subsystem(&self, path: &Path) -> Box<FileSystem> {
[INFO] [stdout]     |                                             ^^^^^^^^^^ help: use `dyn`: `dyn FileSystem`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/filesystem.rs:121:32
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn duplicate(&self) -> Box<FileSystem> {
[INFO] [stdout]     |                                ^^^^^^^^^^ help: use `dyn`: `dyn FileSystem`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/filesystem.rs:136:41
[INFO] [stdout]     |
[INFO] [stdout] 136 |     fn read(&self, path: &Path, f: &mut FnMut(&mut ReadSeek) -> IoResult<()>) -> IoResult<()> {
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut ReadSeek) -> IoResult<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/filesystem.rs:136:52
[INFO] [stdout]     |
[INFO] [stdout] 136 |     fn read(&self, path: &Path, f: &mut FnMut(&mut ReadSeek) -> IoResult<()>) -> IoResult<()> {
[INFO] [stdout]     |                                                    ^^^^^^^^ help: use `dyn`: `dyn ReadSeek`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/filesystem.rs:152:42
[INFO] [stdout]     |
[INFO] [stdout] 152 |     fn write(&self, path: &Path, f: &mut FnMut(&mut Write) -> IoResult<()>) -> IoResult<()> {
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut Write) -> IoResult<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/filesystem.rs:152:53
[INFO] [stdout]     |
[INFO] [stdout] 152 |     fn write(&self, path: &Path, f: &mut FnMut(&mut Write) -> IoResult<()>) -> IoResult<()> {
[INFO] [stdout]     |                                                     ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/filesystem.rs:24:32
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn duplicate(&self) -> Box<FileSystem>;
[INFO] [stdout]    |                                ^^^^^^^^^^ help: use `dyn`: `dyn FileSystem`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/filesystem.rs:25:45
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn subsystem(&self, path: &Path) -> Box<FileSystem>;
[INFO] [stdout]    |                                             ^^^^^^^^^^ help: use `dyn`: `dyn FileSystem`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/filesystem.rs:27:41
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn read(&self, path: &Path, f: &mut FnMut(&mut ReadSeek) -> IoResult<()>) -> IoResult<()>;
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut ReadSeek) -> IoResult<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/filesystem.rs:27:52
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn read(&self, path: &Path, f: &mut FnMut(&mut ReadSeek) -> IoResult<()>) -> IoResult<()>;
[INFO] [stdout]    |                                                    ^^^^^^^^ help: use `dyn`: `dyn ReadSeek`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/filesystem.rs:28:42
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn write(&self, path: &Path, f: &mut FnMut(&mut Write) -> IoResult<()>) -> IoResult<()>;
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut Write) -> IoResult<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/filesystem.rs:28:53
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn write(&self, path: &Path, f: &mut FnMut(&mut Write) -> IoResult<()>) -> IoResult<()>;
[INFO] [stdout]    |                                                     ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/filesystem.rs:54:45
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn subsystem(&self, path: &Path) -> Box<FileSystem> {
[INFO] [stdout]    |                                             ^^^^^^^^^^ help: use `dyn`: `dyn FileSystem`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/filesystem.rs:66:32
[INFO] [stdout]    |
[INFO] [stdout] 66 |     fn duplicate(&self) -> Box<FileSystem> {
[INFO] [stdout]    |                                ^^^^^^^^^^ help: use `dyn`: `dyn FileSystem`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/filesystem.rs:75:41
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn read(&self, path: &Path, f: &mut FnMut(&mut ReadSeek) -> IoResult<()>) -> IoResult<()> {
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut ReadSeek) -> IoResult<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/filesystem.rs:75:52
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn read(&self, path: &Path, f: &mut FnMut(&mut ReadSeek) -> IoResult<()>) -> IoResult<()> {
[INFO] [stdout]    |                                                    ^^^^^^^^ help: use `dyn`: `dyn ReadSeek`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/filesystem.rs:86:42
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn write(&self, path: &Path, f: &mut FnMut(&mut Write) -> IoResult<()>) -> IoResult<()> {
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut Write) -> IoResult<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/filesystem.rs:86:53
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn write(&self, path: &Path, f: &mut FnMut(&mut Write) -> IoResult<()>) -> IoResult<()> {
[INFO] [stdout]    |                                                     ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/filesystem.rs:115:45
[INFO] [stdout]     |
[INFO] [stdout] 115 |     fn subsystem(&self, path: &Path) -> Box<FileSystem> {
[INFO] [stdout]     |                                             ^^^^^^^^^^ help: use `dyn`: `dyn FileSystem`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/filesystem.rs:121:32
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn duplicate(&self) -> Box<FileSystem> {
[INFO] [stdout]     |                                ^^^^^^^^^^ help: use `dyn`: `dyn FileSystem`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/filesystem.rs:136:41
[INFO] [stdout]     |
[INFO] [stdout] 136 |     fn read(&self, path: &Path, f: &mut FnMut(&mut ReadSeek) -> IoResult<()>) -> IoResult<()> {
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut ReadSeek) -> IoResult<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/filesystem.rs:136:52
[INFO] [stdout]     |
[INFO] [stdout] 136 |     fn read(&self, path: &Path, f: &mut FnMut(&mut ReadSeek) -> IoResult<()>) -> IoResult<()> {
[INFO] [stdout]     |                                                    ^^^^^^^^ help: use `dyn`: `dyn ReadSeek`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/filesystem.rs:152:42
[INFO] [stdout]     |
[INFO] [stdout] 152 |     fn write(&self, path: &Path, f: &mut FnMut(&mut Write) -> IoResult<()>) -> IoResult<()> {
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut Write) -> IoResult<()>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/filesystem.rs:152:53
[INFO] [stdout]     |
[INFO] [stdout] 152 |     fn write(&self, path: &Path, f: &mut FnMut(&mut Write) -> IoResult<()>) -> IoResult<()> {
[INFO] [stdout]     |                                                     ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.98s
[INFO] running `Command { std: "docker" "inspect" "53d59ed51790ecdbab47f53f34ecaf78d09c0abbffa55534532b3e750a11088a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53d59ed51790ecdbab47f53f34ecaf78d09c0abbffa55534532b3e750a11088a", kill_on_drop: false }`
[INFO] [stdout] 53d59ed51790ecdbab47f53f34ecaf78d09c0abbffa55534532b3e750a11088a