[INFO] cloning repository https://github.com/iRaySpace/rust_read_json
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/iRaySpace/rust_read_json" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FiRaySpace%2Frust_read_json", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FiRaySpace%2Frust_read_json'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6b27e4a0d8b96b202eb0352559bcfb512b9cb988
[INFO] checking iRaySpace/rust_read_json against master#d8810e3e2dab96778d20dd6d746ff95465515509 for pr-137033
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FiRaySpace%2Frust_read_json" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/iRaySpace/rust_read_json on toolchain d8810e3e2dab96778d20dd6d746ff95465515509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d8810e3e2dab96778d20dd6d746ff95465515509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/iRaySpace/rust_read_json
[INFO] finished tweaking git repo https://github.com/iRaySpace/rust_read_json
[INFO] tweaked toml for git repo https://github.com/iRaySpace/rust_read_json written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/iRaySpace/rust_read_json 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" "+d8810e3e2dab96778d20dd6d746ff95465515509" "fetch" "--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-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+d8810e3e2dab96778d20dd6d746ff95465515509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a3c2a56123e297b7332fefa1aa40002dd0bcebb6a7c1869157965549a179bc00
[INFO] running `Command { std: "docker" "start" "-a" "a3c2a56123e297b7332fefa1aa40002dd0bcebb6a7c1869157965549a179bc00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a3c2a56123e297b7332fefa1aa40002dd0bcebb6a7c1869157965549a179bc00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3c2a56123e297b7332fefa1aa40002dd0bcebb6a7c1869157965549a179bc00", kill_on_drop: false }`
[INFO] [stdout] a3c2a56123e297b7332fefa1aa40002dd0bcebb6a7c1869157965549a179bc00
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+d8810e3e2dab96778d20dd6d746ff95465515509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0d86631575a82f88cb620c275fc601113739e57176388f6dfcfb87ca408f9913
[INFO] running `Command { std: "docker" "start" "-a" "0d86631575a82f88cb620c275fc601113739e57176388f6dfcfb87ca408f9913", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking rust_read_json v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/main.rs:6:5
[INFO] [stdout]    |
[INFO] [stdout] 5  | struct Server {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 6  |     server_name: String,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 7  |     server_description: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 8  |     server_address: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 9  |     server_port: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 10 |     server_utilization: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 11 |     server_capacity: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 12 |     server_enabled: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Server` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/main.rs:6:5
[INFO] [stdout]    |
[INFO] [stdout] 5  | struct Server {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 6  |     server_name: String,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 7  |     server_description: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 8  |     server_address: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 9  |     server_port: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 10 |     server_utilization: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 11 |     server_capacity: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 12 |     server_enabled: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Server` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.54s
[INFO] running `Command { std: "docker" "inspect" "0d86631575a82f88cb620c275fc601113739e57176388f6dfcfb87ca408f9913", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d86631575a82f88cb620c275fc601113739e57176388f6dfcfb87ca408f9913", kill_on_drop: false }`
[INFO] [stdout] 0d86631575a82f88cb620c275fc601113739e57176388f6dfcfb87ca408f9913