[INFO] cloning repository https://github.com/anagav/RustPrograms
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/anagav/RustPrograms" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanagav%2FRustPrograms", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanagav%2FRustPrograms'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 756f5c17cdc32acfddb3bc185575ebdb8c49b61c
[INFO] checking anagav/RustPrograms/756f5c17cdc32acfddb3bc185575ebdb8c49b61c against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanagav%2FRustPrograms" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/anagav/RustPrograms on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/anagav/RustPrograms
[INFO] finished tweaking git repo https://github.com/anagav/RustPrograms
[INFO] tweaked toml for git repo https://github.com/anagav/RustPrograms written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/anagav/RustPrograms 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 89df981faed3b83020b0011d5926d8ffd03da2d32e0ed112cdd3db70ecc8bf76
[INFO] running `Command { std: "docker" "start" "-a" "89df981faed3b83020b0011d5926d8ffd03da2d32e0ed112cdd3db70ecc8bf76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89df981faed3b83020b0011d5926d8ffd03da2d32e0ed112cdd3db70ecc8bf76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89df981faed3b83020b0011d5926d8ffd03da2d32e0ed112cdd3db70ecc8bf76", kill_on_drop: false }`
[INFO] [stdout] 89df981faed3b83020b0011d5926d8ffd03da2d32e0ed112cdd3db70ecc8bf76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 11138dbf2f5e7a2cc6ae6bcdd0c585e516233ca3eb949668a3a05c1cd197c03c
[INFO] running `Command { std: "docker" "start" "-a" "11138dbf2f5e7a2cc6ae6bcdd0c585e516233ca3eb949668a3a05c1cd197c03c", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Checking driver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]  --> src/max_depth_binary_tree/mod.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Node<T> {
[INFO] [stdout]   |        ---- field in this struct
[INFO] [stdout] 5 |     data: T,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Node` 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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `data` is never read
[INFO] [stdout]  --> src/max_depth_binary_tree/mod.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Node<T> {
[INFO] [stdout]   |        ---- field in this struct
[INFO] [stdout] 5 |     data: T,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Node` 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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "11138dbf2f5e7a2cc6ae6bcdd0c585e516233ca3eb949668a3a05c1cd197c03c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11138dbf2f5e7a2cc6ae6bcdd0c585e516233ca3eb949668a3a05c1cd197c03c", kill_on_drop: false }`
[INFO] [stdout] 11138dbf2f5e7a2cc6ae6bcdd0c585e516233ca3eb949668a3a05c1cd197c03c