[INFO] cloning repository https://github.com/nkxxll/gzippi
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nkxxll/gzippi" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnkxxll%2Fgzippi", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnkxxll%2Fgzippi'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 90247aca690680aaa063923aef0c640e863fefe2
[INFO] checking nkxxll/gzippi against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnkxxll%2Fgzippi" "/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/nkxxll/gzippi on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nkxxll/gzippi
[INFO] finished tweaking git repo https://github.com/nkxxll/gzippi
[INFO] tweaked toml for git repo https://github.com/nkxxll/gzippi written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/nkxxll/gzippi 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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 29164a4d01805ba62418b99398fd3ca65188a335f1dee8ac77207f5a821ee674
[INFO] running `Command { std: "docker" "start" "-a" "29164a4d01805ba62418b99398fd3ca65188a335f1dee8ac77207f5a821ee674", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "29164a4d01805ba62418b99398fd3ca65188a335f1dee8ac77207f5a821ee674", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29164a4d01805ba62418b99398fd3ca65188a335f1dee8ac77207f5a821ee674", kill_on_drop: false }`
[INFO] [stdout] 29164a4d01805ba62418b99398fd3ca65188a335f1dee8ac77207f5a821ee674
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 798515b7c7f046a65dbdf8141ea3426ca6911a3c264ffb63f45583dd3d947025
[INFO] running `Command { std: "docker" "start" "-a" "798515b7c7f046a65dbdf8141ea3426ca6911a3c264ffb63f45583dd3d947025", kill_on_drop: false }`
[INFO] [stderr]     Checking gzippi v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]  --> src/binarytree.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Node<T: Debug> {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BTree` is never constructed
[INFO] [stdout]   --> src/binarytree.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct BTree<T: Debug> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `in_order_traverse` and `new` are never used
[INFO] [stdout]   --> src/binarytree.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl<T: Debug> Node<T> {
[INFO] [stdout]    | ---------------------- associated items in this implementation
[INFO] [stdout] 16 |     fn in_order_traverse(&self, res: &mut String) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     fn new(arg: T) -> Node<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/binarytree.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | impl<T: Debug> BTree<T> {
[INFO] [stdout]    | ----------------------- associated function in this implementation
[INFO] [stdout] 37 |     fn new(head: Node<T>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "798515b7c7f046a65dbdf8141ea3426ca6911a3c264ffb63f45583dd3d947025", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "798515b7c7f046a65dbdf8141ea3426ca6911a3c264ffb63f45583dd3d947025", kill_on_drop: false }`
[INFO] [stdout] 798515b7c7f046a65dbdf8141ea3426ca6911a3c264ffb63f45583dd3d947025
[INFO] checking nkxxll/gzippi against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnkxxll%2Fgzippi" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nkxxll/gzippi on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nkxxll/gzippi
[INFO] finished tweaking git repo https://github.com/nkxxll/gzippi
[INFO] tweaked toml for git repo https://github.com/nkxxll/gzippi written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/nkxxll/gzippi 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" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 407d015497a0e7ea5f63340539a29db0d59350f7720a78f46b577bb02040a01d
[INFO] running `Command { std: "docker" "start" "-a" "407d015497a0e7ea5f63340539a29db0d59350f7720a78f46b577bb02040a01d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "407d015497a0e7ea5f63340539a29db0d59350f7720a78f46b577bb02040a01d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "407d015497a0e7ea5f63340539a29db0d59350f7720a78f46b577bb02040a01d", kill_on_drop: false }`
[INFO] [stdout] 407d015497a0e7ea5f63340539a29db0d59350f7720a78f46b577bb02040a01d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b3d1ede63b1878757c5fe086094fc23036437b05d7991b281c903dce3728978b
[INFO] running `Command { std: "docker" "start" "-a" "b3d1ede63b1878757c5fe086094fc23036437b05d7991b281c903dce3728978b", kill_on_drop: false }`
[INFO] [stderr]     Checking gzippi v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]  --> src/binarytree.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct Node<T: Debug> {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BTree` is never constructed
[INFO] [stdout]   --> src/binarytree.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct BTree<T: Debug> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `in_order_traverse` and `new` are never used
[INFO] [stdout]   --> src/binarytree.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl<T: Debug> Node<T> {
[INFO] [stdout]    | ---------------------- associated items in this implementation
[INFO] [stdout] 16 |     fn in_order_traverse(&self, res: &mut String) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     fn new(arg: T) -> Node<T> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/binarytree.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | impl<T: Debug> BTree<T> {
[INFO] [stdout]    | ----------------------- associated function in this implementation
[INFO] [stdout] 37 |     fn new(head: Node<T>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "b3d1ede63b1878757c5fe086094fc23036437b05d7991b281c903dce3728978b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3d1ede63b1878757c5fe086094fc23036437b05d7991b281c903dce3728978b", kill_on_drop: false }`
[INFO] [stdout] b3d1ede63b1878757c5fe086094fc23036437b05d7991b281c903dce3728978b