[INFO] fetching crate http_router_alt 0.2.0...
[INFO] checking http_router_alt-0.2.0 against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] extracting crate http_router_alt 0.2.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate http_router_alt 0.2.0 on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate http_router_alt 0.2.0
[INFO] finished tweaking crates.io crate http_router_alt 0.2.0
[INFO] tweaked toml for crates.io crate http_router_alt 0.2.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e71fcd711052688e7452605d6b7b05a4ba69e9f19cdc3bd100b3ee33b576c58a
[INFO] running `Command { std: "docker" "start" "-a" "e71fcd711052688e7452605d6b7b05a4ba69e9f19cdc3bd100b3ee33b576c58a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e71fcd711052688e7452605d6b7b05a4ba69e9f19cdc3bd100b3ee33b576c58a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e71fcd711052688e7452605d6b7b05a4ba69e9f19cdc3bd100b3ee33b576c58a", kill_on_drop: false }`
[INFO] [stdout] e71fcd711052688e7452605d6b7b05a4ba69e9f19cdc3bd100b3ee33b576c58a
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 24dec747d2926ab99cd0cb0fa7541bd762f80c9b5076b1ddfdd8ce778184e80f
[INFO] running `Command { std: "docker" "start" "-a" "24dec747d2926ab99cd0cb0fa7541bd762f80c9b5076b1ddfdd8ce778184e80f", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]    Compiling futures-task v0.3.15
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking httpdate v1.0.1
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling tokio v1.8.2
[INFO] [stderr]     Checking http v0.2.4
[INFO] [stderr]     Checking tracing-core v0.1.18
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stderr]     Checking http-body v0.4.2
[INFO] [stderr]     Checking hyper v0.14.10
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking http_router_alt v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/lib.rs:139:9
[INFO] [stdout]     |
[INFO] [stdout] 139 |         { Arc::new(Mutex::new(HashMap::new())) };
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around block return value
[INFO] [stdout]    --> src/lib.rs:139:9
[INFO] [stdout]     |
[INFO] [stdout] 139 |         { Arc::new(Mutex::new(HashMap::new())) };
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]    --> src/lib.rs:407:37
[INFO] [stdout]     |
[INFO] [stdout] 407 |         for test_case in test_cases.into_iter() {
[INFO] [stdout]     |                                     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 407 |         for test_case in test_cases.iter() {
[INFO] [stdout]     |                                     ^^^^
[INFO] [stdout] help: or remove `.into_iter()` to iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 407 |         for test_case in test_cases {
[INFO] [stdout]     |                                   --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.11s
[INFO] running `Command { std: "docker" "inspect" "24dec747d2926ab99cd0cb0fa7541bd762f80c9b5076b1ddfdd8ce778184e80f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24dec747d2926ab99cd0cb0fa7541bd762f80c9b5076b1ddfdd8ce778184e80f", kill_on_drop: false }`
[INFO] [stdout] 24dec747d2926ab99cd0cb0fa7541bd762f80c9b5076b1ddfdd8ce778184e80f