[INFO] cloning repository https://github.com/jxilt/blockchain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jxilt/blockchain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjxilt%2Fblockchain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjxilt%2Fblockchain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6859bce69b2bf57be1662be55b9a01284c193824
[INFO] checking jxilt/blockchain against master#893fadd11a52aa26fc19c67ee1b79f03d6a1bed3 for pr-77153
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjxilt%2Fblockchain" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jxilt/blockchain on toolchain 893fadd11a52aa26fc19c67ee1b79f03d6a1bed3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+893fadd11a52aa26fc19c67ee1b79f03d6a1bed3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jxilt/blockchain
[INFO] finished tweaking git repo https://github.com/jxilt/blockchain
[INFO] tweaked toml for git repo https://github.com/jxilt/blockchain written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/jxilt/blockchain already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+893fadd11a52aa26fc19c67ee1b79f03d6a1bed3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+893fadd11a52aa26fc19c67ee1b79f03d6a1bed3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6ef1ab61c23279dbfcd6bd872229c2977c15710113b5633d9ea9e53fdb46bd5b
[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" "6ef1ab61c23279dbfcd6bd872229c2977c15710113b5633d9ea9e53fdb46bd5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ef1ab61c23279dbfcd6bd872229c2977c15710113b5633d9ea9e53fdb46bd5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ef1ab61c23279dbfcd6bd872229c2977c15710113b5633d9ea9e53fdb46bd5b", kill_on_drop: false }`
[INFO] [stdout] 6ef1ab61c23279dbfcd6bd872229c2977c15710113b5633d9ea9e53fdb46bd5b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+893fadd11a52aa26fc19c67ee1b79f03d6a1bed3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cc565d79a39fb15c11dc6ecec2f32791437252075e3cbf99e9dc4fa95531eb88
[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" "cc565d79a39fb15c11dc6ecec2f32791437252075e3cbf99e9dc4fa95531eb88", kill_on_drop: false }`
[INFO] [stderr]     Checking blockchain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `contents`
[INFO] [stdout]   --> src/handler.rs:33:16
[INFO] [stdout]    |
[INFO] [stdout] 33 |             Ok(contents) => {
[INFO] [stdout]    |                ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_contents`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/persistence.rs:27:22
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn commit(&self, data: String) -> Result<(), String> {
[INFO] [stdout]    |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `method`
[INFO] [stdout]    --> src/handler.rs:129:5
[INFO] [stdout]     |
[INFO] [stdout] 129 |     method: String,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `request_uri`
[INFO] [stdout]    --> src/handler.rs:130:5
[INFO] [stdout]     |
[INFO] [stdout] 130 |     request_uri: String,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `http_version`
[INFO] [stdout]    --> src/handler.rs:131:5
[INFO] [stdout]     |
[INFO] [stdout] 131 |     http_version: String
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `contents`
[INFO] [stdout]   --> src/handler.rs:33:16
[INFO] [stdout]    |
[INFO] [stdout] 33 |             Ok(contents) => {
[INFO] [stdout]    |                ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_contents`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/persistence.rs:27:22
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn commit(&self, data: String) -> Result<(), String> {
[INFO] [stdout]    |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `method`
[INFO] [stdout]    --> src/handler.rs:129:5
[INFO] [stdout]     |
[INFO] [stdout] 129 |     method: String,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `request_uri`
[INFO] [stdout]    --> src/handler.rs:130:5
[INFO] [stdout]     |
[INFO] [stdout] 130 |     request_uri: String,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `http_version`
[INFO] [stdout]    --> src/handler.rs:131:5
[INFO] [stdout]     |
[INFO] [stdout] 131 |     http_version: String
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `Command { std: "docker" "inspect" "cc565d79a39fb15c11dc6ecec2f32791437252075e3cbf99e9dc4fa95531eb88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc565d79a39fb15c11dc6ecec2f32791437252075e3cbf99e9dc4fa95531eb88", kill_on_drop: false }`
[INFO] [stdout] cc565d79a39fb15c11dc6ecec2f32791437252075e3cbf99e9dc4fa95531eb88