[INFO] cloning repository https://github.com/bahelms/hadcoin
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bahelms/hadcoin" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbahelms%2Fhadcoin", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbahelms%2Fhadcoin'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a1eb73f73a4980ec0f2f57ea07dc776606576792
[INFO] checking bahelms/hadcoin against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbahelms%2Fhadcoin" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/bahelms/hadcoin
[INFO] finished tweaking git repo https://github.com/bahelms/hadcoin
[INFO] tweaked toml for git repo https://github.com/bahelms/hadcoin written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/bahelms/hadcoin on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/bahelms/hadcoin already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bb2d3d9a00e269bc44a51bde5cc7d3ff10788b51d7e138fe1a3e5bb6914357dd
[INFO] running `Command { std: "docker" "start" "-a" "bb2d3d9a00e269bc44a51bde5cc7d3ff10788b51d7e138fe1a3e5bb6914357dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb2d3d9a00e269bc44a51bde5cc7d3ff10788b51d7e138fe1a3e5bb6914357dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb2d3d9a00e269bc44a51bde5cc7d3ff10788b51d7e138fe1a3e5bb6914357dd", kill_on_drop: false }`
[INFO] [stdout] bb2d3d9a00e269bc44a51bde5cc7d3ff10788b51d7e138fe1a3e5bb6914357dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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 -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ad8167849c46be50c11739ebad978252bc6d219cce15041dd4a5c4e367e5a9f4
[INFO] running `Command { std: "docker" "start" "-a" "ad8167849c46be50c11739ebad978252bc6d219cce15041dd4a5c4e367e5a9f4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]    Compiling parking_lot_core v0.9.1
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]     Checking once_cell v1.10.0
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]     Checking tracing-core v0.1.23
[INFO] [stderr]    Compiling httparse v1.6.0
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]     Checking http v0.2.6
[INFO] [stderr]     Checking cpufeatures v0.2.1
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking tracing v0.1.32
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.8.2
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking parking_lot v0.12.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking sha2 v0.9.9
[INFO] [stderr]     Checking http-body v0.4.4
[INFO] [stderr]     Checking sha256 v1.0.3
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]     Checking tokio v1.17.0
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking tokio-util v0.6.9
[INFO] [stderr]     Checking h2 v0.3.12
[INFO] [stderr]     Checking hyper v0.14.18
[INFO] [stderr]     Checking hadcoin v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]   --> src/main.rs:14:41
[INFO] [stdout]    |
[INFO] [stdout] 14 |   ) -> Result<Response<Body>, Infallible> {
[INFO] [stdout]    |  _________________________________________^
[INFO] [stdout] 15 | |     let mut response = Response::new(Body::empty());
[INFO] [stdout] 16 | |     let mut chain = chain.lock().unwrap();
[INFO] [stdout] ...  |
[INFO] [stdout] 36 | |     Ok(response)
[INFO] [stdout] 37 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]   --> src/main.rs:14:41
[INFO] [stdout]    |
[INFO] [stdout] 14 |   ) -> Result<Response<Body>, Infallible> {
[INFO] [stdout]    |  _________________________________________^
[INFO] [stdout] 15 | |     let mut response = Response::new(Body::empty());
[INFO] [stdout] 16 | |     let mut chain = chain.lock().unwrap();
[INFO] [stdout] ...  |
[INFO] [stdout] 36 | |     Ok(response)
[INFO] [stdout] 37 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]   --> src/main.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     Ok(response)
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<hyper::service::util::ServiceFn<{closure@src/main.rs:45:34: 45:44}, Body>, Infallible>
[INFO] [stdout]   --> src/main.rs:46:20
[INFO] [stdout]    |
[INFO] [stdout] 46 |         async move { Ok::<_, Infallible>(service) }
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<hyper::service::util::ServiceFn<{closure@src/main.rs:45:34: 45:44}, Body>, Infallible>
[INFO] [stdout]   --> src/main.rs:46:22
[INFO] [stdout]    |
[INFO] [stdout] 46 |         async move { Ok::<_, Infallible>(service) }
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hadcoin` (bin "hadcoin" test) due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: method `is_valid` is never used
[INFO] [stdout]   --> src/blockchain.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Blockchain {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn is_valid(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]   --> src/main.rs:14:41
[INFO] [stdout]    |
[INFO] [stdout] 14 |   ) -> Result<Response<Body>, Infallible> {
[INFO] [stdout]    |  _________________________________________^
[INFO] [stdout] 15 | |     let mut response = Response::new(Body::empty());
[INFO] [stdout] 16 | |     let mut chain = chain.lock().unwrap();
[INFO] [stdout] ...  |
[INFO] [stdout] 36 | |     Ok(response)
[INFO] [stdout] 37 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]   --> src/main.rs:14:41
[INFO] [stdout]    |
[INFO] [stdout] 14 |   ) -> Result<Response<Body>, Infallible> {
[INFO] [stdout]    |  _________________________________________^
[INFO] [stdout] 15 | |     let mut response = Response::new(Body::empty());
[INFO] [stdout] 16 | |     let mut chain = chain.lock().unwrap();
[INFO] [stdout] ...  |
[INFO] [stdout] 36 | |     Ok(response)
[INFO] [stdout] 37 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Response<Body>, Infallible>
[INFO] [stdout]   --> src/main.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     Ok(response)
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<hyper::service::util::ServiceFn<{closure@src/main.rs:45:34: 45:44}, Body>, Infallible>
[INFO] [stdout]   --> src/main.rs:46:20
[INFO] [stdout]    |
[INFO] [stdout] 46 |         async move { Ok::<_, Infallible>(service) }
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<hyper::service::util::ServiceFn<{closure@src/main.rs:45:34: 45:44}, Body>, Infallible>
[INFO] [stdout]   --> src/main.rs:46:22
[INFO] [stdout]    |
[INFO] [stdout] 46 |         async move { Ok::<_, Infallible>(service) }
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hadcoin` (bin "hadcoin") due to 5 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "ad8167849c46be50c11739ebad978252bc6d219cce15041dd4a5c4e367e5a9f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad8167849c46be50c11739ebad978252bc6d219cce15041dd4a5c4e367e5a9f4", kill_on_drop: false }`
[INFO] [stdout] ad8167849c46be50c11739ebad978252bc6d219cce15041dd4a5c4e367e5a9f4
