[INFO] cloning repository https://github.com/faugan2/rust-projects
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/faugan2/rust-projects" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffaugan2%2Frust-projects", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffaugan2%2Frust-projects'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9cf239b7a235b6ff3bb7a1770d818d4488c54024
[INFO] checking faugan2/rust-projects against try#723ab942d877517caf445dafde0416803ef56501 for pr-143857
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffaugan2%2Frust-projects" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] error: failed to write new configuration file /workspace/builds/worker-1-tc2/source/.git/config.lock
[INFO] [stderr] fatal: could not set 'core.repositoryformatversion' to '0'
[INFO] checking faugan2/rust-projects against try#723ab942d877517caf445dafde0416803ef56501 for pr-143857
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffaugan2%2Frust-projects" "/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/faugan2/rust-projects
[INFO] finished tweaking git repo https://github.com/faugan2/rust-projects
[INFO] tweaked toml for git repo https://github.com/faugan2/rust-projects written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/faugan2/rust-projects on toolchain 723ab942d877517caf445dafde0416803ef56501
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+723ab942d877517caf445dafde0416803ef56501" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/faugan2/rust-projects 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" "+723ab942d877517caf445dafde0416803ef56501" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+723ab942d877517caf445dafde0416803ef56501" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6979ec0b3f96d2e87a72e77e74665e1dae2e92df4be1ab82791c9af000805ba2
[INFO] running `Command { std: "docker" "start" "-a" "6979ec0b3f96d2e87a72e77e74665e1dae2e92df4be1ab82791c9af000805ba2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6979ec0b3f96d2e87a72e77e74665e1dae2e92df4be1ab82791c9af000805ba2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6979ec0b3f96d2e87a72e77e74665e1dae2e92df4be1ab82791c9af000805ba2", kill_on_drop: false }`
[INFO] [stdout] 6979ec0b3f96d2e87a72e77e74665e1dae2e92df4be1ab82791c9af000805ba2
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+723ab942d877517caf445dafde0416803ef56501" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2cd71c10371788642ae759f91820d55e32fb980ab9d0ec999ab482f818c4d453
[INFO] running `Command { std: "docker" "start" "-a" "2cd71c10371788642ae759f91820d55e32fb980ab9d0ec999ab482f818c4d453", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking app v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `hobbies`
[INFO] [stdout]   --> src/main.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let hobbies=obj.get("hobbies").unwrap();
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hobbies`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hobbies`
[INFO] [stdout]   --> src/main.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let hobbies=obj.get("hobbies").unwrap();
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hobbies`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.95s
[INFO] running `Command { std: "docker" "inspect" "2cd71c10371788642ae759f91820d55e32fb980ab9d0ec999ab482f818c4d453", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cd71c10371788642ae759f91820d55e32fb980ab9d0ec999ab482f818c4d453", kill_on_drop: false }`
[INFO] [stdout] 2cd71c10371788642ae759f91820d55e32fb980ab9d0ec999ab482f818c4d453