[INFO] fetching crate iron-middlefiddle 0.1.1...
[INFO] checking iron-middlefiddle-0.1.1 against master#50e1dc1536264ab71c0850f346b12309477f29f7 for pr-85073
[INFO] extracting crate iron-middlefiddle 0.1.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate iron-middlefiddle 0.1.1 on toolchain 50e1dc1536264ab71c0850f346b12309477f29f7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 54ea3b80f5a84aae517c23804d69d9e2dafb6a7cc6a247a470f55d5dfce8f249
[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" "54ea3b80f5a84aae517c23804d69d9e2dafb6a7cc6a247a470f55d5dfce8f249", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "54ea3b80f5a84aae517c23804d69d9e2dafb6a7cc6a247a470f55d5dfce8f249", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54ea3b80f5a84aae517c23804d69d9e2dafb6a7cc6a247a470f55d5dfce8f249", kill_on_drop: false }`
[INFO] [stdout] 54ea3b80f5a84aae517c23804d69d9e2dafb6a7cc6a247a470f55d5dfce8f249
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a2225bcc4a02891f8c8af0f770344f36ed93f4bcb206b87b5076014a8f9e7820
[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" "a2225bcc4a02891f8c8af0f770344f36ed93f4bcb206b87b5076014a8f9e7820", kill_on_drop: false }`
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]     Checking iron v0.5.1
[INFO] [stderr]     Checking 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]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.96s
[INFO] running `Command { std: "docker" "inspect" "a2225bcc4a02891f8c8af0f770344f36ed93f4bcb206b87b5076014a8f9e7820", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2225bcc4a02891f8c8af0f770344f36ed93f4bcb206b87b5076014a8f9e7820", kill_on_drop: false }`
[INFO] [stdout] a2225bcc4a02891f8c8af0f770344f36ed93f4bcb206b87b5076014a8f9e7820