[INFO] fetching crate iron-middlefiddle 0.1.1...
[INFO] testing iron-middlefiddle-0.1.1 against try#eafdee2dfae8c2233b74f98b123308be7ccefcc6 for pr-79296
[INFO] extracting crate iron-middlefiddle 0.1.1 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate iron-middlefiddle 0.1.1 on toolchain eafdee2dfae8c2233b74f98b123308be7ccefcc6
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate iron-middlefiddle 0.1.1
[INFO] finished tweaking crates.io crate iron-middlefiddle 0.1.1
[INFO] tweaked toml for crates.io crate iron-middlefiddle 0.1.1 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b9c8bd8c6835ef7a93910273f3260e4e38b06f81e7d842a456e24e57b37ccbb8
[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" "b9c8bd8c6835ef7a93910273f3260e4e38b06f81e7d842a456e24e57b37ccbb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b9c8bd8c6835ef7a93910273f3260e4e38b06f81e7d842a456e24e57b37ccbb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9c8bd8c6835ef7a93910273f3260e4e38b06f81e7d842a456e24e57b37ccbb8", kill_on_drop: false }`
[INFO] [stdout] b9c8bd8c6835ef7a93910273f3260e4e38b06f81e7d842a456e24e57b37ccbb8
[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" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 74f193da56e1ca65262ae4c71ed33f8a426f511c09e285159625f375c4a4e79b
[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" "74f193da56e1ca65262ae4c71ed33f8a426f511c09e285159625f375c4a4e79b", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling safemem v0.3.3
[INFO] [stderr]    Compiling conduit-mime-types v0.7.3
[INFO] [stderr]    Compiling unicode-normalization v0.1.16
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]    Compiling hyper v0.10.16
[INFO] [stderr]    Compiling iron v0.5.1
[INFO] [stderr]    Compiling iron-middlefiddle v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:89:26
[INFO] [stdout]    |
[INFO] [stdout] 89 |     BeforeMiddleware(Box<iron::BeforeMiddleware>),
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn iron::BeforeMiddleware`
[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/lib.rs:103:25
[INFO] [stdout]     |
[INFO] [stdout] 103 |     AfterMiddleware(Box<iron::AfterMiddleware>),
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn iron::AfterMiddleware`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:116:29
[INFO] [stdout]     |
[INFO] [stdout] 116 |     pub handler: Option<Box<Handler>>,
[INFO] [stdout]     |                             ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.23s
[INFO] running `Command { std: "docker" "inspect" "74f193da56e1ca65262ae4c71ed33f8a426f511c09e285159625f375c4a4e79b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74f193da56e1ca65262ae4c71ed33f8a426f511c09e285159625f375c4a4e79b", kill_on_drop: false }`
[INFO] [stdout] 74f193da56e1ca65262ae4c71ed33f8a426f511c09e285159625f375c4a4e79b
[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" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ec5fd7b3de5ee914f1547bd92cf341910d036d80174d8e4d9378ca55a2be290
[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" "1ec5fd7b3de5ee914f1547bd92cf341910d036d80174d8e4d9378ca55a2be290", kill_on_drop: false }`
[INFO] [stderr]    Compiling iron-middlefiddle v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:89:26
[INFO] [stdout]    |
[INFO] [stdout] 89 |     BeforeMiddleware(Box<iron::BeforeMiddleware>),
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn iron::BeforeMiddleware`
[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/lib.rs:103:25
[INFO] [stdout]     |
[INFO] [stdout] 103 |     AfterMiddleware(Box<iron::AfterMiddleware>),
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn iron::AfterMiddleware`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:116:29
[INFO] [stdout]     |
[INFO] [stdout] 116 |     pub handler: Option<Box<Handler>>,
[INFO] [stdout]     |                             ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:89:26
[INFO] [stdout]    |
[INFO] [stdout] 89 |     BeforeMiddleware(Box<iron::BeforeMiddleware>),
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn iron::BeforeMiddleware`
[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/lib.rs:103:25
[INFO] [stdout]     |
[INFO] [stdout] 103 |     AfterMiddleware(Box<iron::AfterMiddleware>),
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn iron::AfterMiddleware`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:116:29
[INFO] [stdout]     |
[INFO] [stdout] 116 |     pub handler: Option<Box<Handler>>,
[INFO] [stdout]     |                             ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `Command { std: "docker" "inspect" "1ec5fd7b3de5ee914f1547bd92cf341910d036d80174d8e4d9378ca55a2be290", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ec5fd7b3de5ee914f1547bd92cf341910d036d80174d8e4d9378ca55a2be290", kill_on_drop: false }`
[INFO] [stdout] 1ec5fd7b3de5ee914f1547bd92cf341910d036d80174d8e4d9378ca55a2be290
[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" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9d48a8435bd53b88897be2102145a8dc9c7befdce4799ddbd2aab15a592b8f89
[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" "9d48a8435bd53b88897be2102145a8dc9c7befdce4799ddbd2aab15a592b8f89", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:89:26
[INFO] [stderr]    |
[INFO] [stderr] 89 |     BeforeMiddleware(Box<iron::BeforeMiddleware>),
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn iron::BeforeMiddleware`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:103:25
[INFO] [stderr]     |
[INFO] [stderr] 103 |     AfterMiddleware(Box<iron::AfterMiddleware>),
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn iron::AfterMiddleware`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:116:29
[INFO] [stderr]     |
[INFO] [stderr] 116 |     pub handler: Option<Box<Handler>>,
[INFO] [stderr]     |                             ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:89:26
[INFO] [stderr]    |
[INFO] [stderr] 89 |     BeforeMiddleware(Box<iron::BeforeMiddleware>),
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn iron::BeforeMiddleware`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:103:25
[INFO] [stderr]     |
[INFO] [stderr] 103 |     AfterMiddleware(Box<iron::AfterMiddleware>),
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn iron::AfterMiddleware`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:116:29
[INFO] [stderr]     |
[INFO] [stderr] 116 |     pub handler: Option<Box<Handler>>,
[INFO] [stderr]     |                             ^^^^^^^ help: use `dyn`: `dyn Handler`
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/iron_middlefiddle-f4d64ea207ef5995
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests iron-middlefiddle
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs - Middleware::BeforeMiddleware (line 77) ... FAILED
[INFO] [stdout] test src/lib.rs - Middleware (line 62) ... FAILED
[INFO] [stdout] test src/lib.rs - Middleware::AfterMiddleware (line 91) ... FAILED
[INFO] [stdout] test src/lib.rs - middlefiddle (line 149) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 12) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - Middleware::BeforeMiddleware (line 77) stdout ----
[INFO] [stdout] error: cannot find macro `middlefiddle` in this scope
[INFO] [stdout]  --> src/lib.rs:78:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | middlefiddle! {
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - Middleware (line 62) stdout ----
[INFO] [stdout] error: cannot find macro `middlefiddle` in this scope
[INFO] [stdout]  --> src/lib.rs:63:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | middlefiddle! {
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - Middleware::AfterMiddleware (line 91) stdout ----
[INFO] [stdout] error: cannot find macro `middlefiddle` in this scope
[INFO] [stdout]  --> src/lib.rs:92:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | middlefiddle! {
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - middlefiddle (line 149) stdout ----
[INFO] [stdout] error: cannot find macro `middlefiddle` in this scope
[INFO] [stdout]  --> src/lib.rs:150:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | middlefiddle! {
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 12) stdout ----
[INFO] [stdout] error: expected one of `.`, `;`, `?`, `}`, or an operator, found `Iron`
[INFO] [stdout]   --> src/lib.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     mount.mount("/", frontend_router)
[INFO] [stdout]    |                                      - expected one of `.`, `;`, `?`, `}`, or an operator
[INFO] [stdout] 40 | 
[INFO] [stdout] 41 |     Iron::new(mount).http("127.0.0.1:8888").unwrap();
[INFO] [stdout]    |     ^^^^ unexpected token
[INFO] [stdout] 
[INFO] [stdout] error[E0583]: file not found for module `controllers`
[INFO] [stdout]   --> src/lib.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | mod controllers;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: to create the module `controllers`, create file "src/controllers.rs"
[INFO] [stdout] 
[INFO] [stdout] error[E0583]: file not found for module `middleware`
[INFO] [stdout]   --> src/lib.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | mod middleware;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: to create the module `middleware`, create file "src/middleware.rs"
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `mount`
[INFO] [stdout]  --> src/lib.rs:16:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | extern crate mount;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0463, E0583.
[INFO] [stdout] For more information about an error, try `rustc --explain E0463`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 12)
[INFO] [stdout]     src/lib.rs - Middleware (line 62)
[INFO] [stdout]     src/lib.rs - Middleware::AfterMiddleware (line 91)
[INFO] [stdout]     src/lib.rs - Middleware::BeforeMiddleware (line 77)
[INFO] [stdout]     src/lib.rs - middlefiddle (line 149)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 5 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "9d48a8435bd53b88897be2102145a8dc9c7befdce4799ddbd2aab15a592b8f89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d48a8435bd53b88897be2102145a8dc9c7befdce4799ddbd2aab15a592b8f89", kill_on_drop: false }`
[INFO] [stdout] 9d48a8435bd53b88897be2102145a8dc9c7befdce4799ddbd2aab15a592b8f89