[INFO] cloning repository https://github.com/MwanikiN/rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MwanikiN/rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMwanikiN%2Frust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMwanikiN%2Frust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3956bc3ad5ff909bad7ef6ab8db414f3d4825a10
[INFO] checking MwanikiN/rust against try#e784c10fc2dd34bf2bb7b1e51117e35d3f9c5837 for pr-143619
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMwanikiN%2Frust" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/MwanikiN/rust
[INFO] finished tweaking git repo https://github.com/MwanikiN/rust
[INFO] tweaked toml for git repo https://github.com/MwanikiN/rust written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/MwanikiN/rust on toolchain e784c10fc2dd34bf2bb7b1e51117e35d3f9c5837
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e784c10fc2dd34bf2bb7b1e51117e35d3f9c5837" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/MwanikiN/rust 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" "+e784c10fc2dd34bf2bb7b1e51117e35d3f9c5837" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e8955075918b6d00525c617f7c34ee2595c70db70b3cf844dc875e4d3604499b" "/opt/rustwide/cargo-home/bin/cargo" "+e784c10fc2dd34bf2bb7b1e51117e35d3f9c5837" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cb920f23e2ea99febf53f383c5b9e0f93a515c78ff855737e432ee538cad325a
[INFO] running `Command { std: "docker" "start" "-a" "cb920f23e2ea99febf53f383c5b9e0f93a515c78ff855737e432ee538cad325a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb920f23e2ea99febf53f383c5b9e0f93a515c78ff855737e432ee538cad325a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb920f23e2ea99febf53f383c5b9e0f93a515c78ff855737e432ee538cad325a", kill_on_drop: false }`
[INFO] [stdout] cb920f23e2ea99febf53f383c5b9e0f93a515c78ff855737e432ee538cad325a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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:e8955075918b6d00525c617f7c34ee2595c70db70b3cf844dc875e4d3604499b" "/opt/rustwide/cargo-home/bin/cargo" "+e784c10fc2dd34bf2bb7b1e51117e35d3f9c5837" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c578cdcfc5c36ce50f5e0232f5510451fff6c6e1777d319ed6c56a8c1a233e1c
[INFO] running `Command { std: "docker" "start" "-a" "c578cdcfc5c36ce50f5e0232f5510451fff6c6e1777d319ed6c56a8c1a233e1c", kill_on_drop: false }`
[INFO] [stderr]     Checking rustc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `Used` is never constructed
[INFO] [stdout]   --> src/bin/a3.rs:11:17
[INFO] [stdout]    |
[INFO] [stdout] 11 | enum Age { New, Used }
[INFO] [stdout]    |      ---        ^^^^
[INFO] [stdout]    |      |
[INFO] [stdout]    |      variant in this enum
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Age` 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: variant `Used` is never constructed
[INFO] [stdout]   --> src/bin/a2.rs:12:17
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum Age { New, Used }
[INFO] [stdout]    |      ---        ^^^^
[INFO] [stdout]    |      |
[INFO] [stdout]    |      variant in this enum
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Age` 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: variant `Used` is never constructed
[INFO] [stdout]   --> src/bin/a3.rs:11:17
[INFO] [stdout]    |
[INFO] [stdout] 11 | enum Age { New, Used }
[INFO] [stdout]    |      ---        ^^^^
[INFO] [stdout]    |      |
[INFO] [stdout]    |      variant in this enum
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Age` 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: variant `Used` is never constructed
[INFO] [stdout]   --> src/bin/a2.rs:12:17
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum Age { New, Used }
[INFO] [stdout]    |      ---        ^^^^
[INFO] [stdout]    |      |
[INFO] [stdout]    |      variant in this enum
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Age` 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 0.18s
[INFO] running `Command { std: "docker" "inspect" "c578cdcfc5c36ce50f5e0232f5510451fff6c6e1777d319ed6c56a8c1a233e1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c578cdcfc5c36ce50f5e0232f5510451fff6c6e1777d319ed6c56a8c1a233e1c", kill_on_drop: false }`
[INFO] [stdout] c578cdcfc5c36ce50f5e0232f5510451fff6c6e1777d319ed6c56a8c1a233e1c