[INFO] cloning repository https://github.com/LegitCamper/embedded-bktree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LegitCamper/embedded-bktree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLegitCamper%2Fembedded-bktree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLegitCamper%2Fembedded-bktree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9d6483a280b93e3700a5a77e0d247f78321d80b8
[INFO] checking LegitCamper/embedded-bktree against try#78c81ee3917a99dcff6e2e6822800f0492c415c3 for pr-148967
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLegitCamper%2Fembedded-bktree" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/LegitCamper/embedded-bktree
[INFO] finished tweaking git repo https://github.com/LegitCamper/embedded-bktree
[INFO] tweaked toml for git repo https://github.com/LegitCamper/embedded-bktree written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/LegitCamper/embedded-bktree on toolchain 78c81ee3917a99dcff6e2e6822800f0492c415c3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+78c81ee3917a99dcff6e2e6822800f0492c415c3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/LegitCamper/embedded-bktree 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" "+78c81ee3917a99dcff6e2e6822800f0492c415c3" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+78c81ee3917a99dcff6e2e6822800f0492c415c3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ecea871ab9145879f927c00655e467a3fb299efc8529e26026de235d4236f34a
[INFO] running `Command { std: "docker" "start" "-a" "ecea871ab9145879f927c00655e467a3fb299efc8529e26026de235d4236f34a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ecea871ab9145879f927c00655e467a3fb299efc8529e26026de235d4236f34a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ecea871ab9145879f927c00655e467a3fb299efc8529e26026de235d4236f34a", kill_on_drop: false }`
[INFO] [stdout] ecea871ab9145879f927c00655e467a3fb299efc8529e26026de235d4236f34a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+78c81ee3917a99dcff6e2e6822800f0492c415c3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 79ec26c74d1e18040173fa4571ebf6477e96d090e5aadf9e1fa4abdea132bd42
[INFO] running `Command { std: "docker" "start" "-a" "79ec26c74d1e18040173fa4571ebf6477e96d090e5aadf9e1fa4abdea132bd42", kill_on_drop: false }`
[INFO] [stderr]     Checking embedded-bktree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant `CHILDREN_LENGTH` is never used
[INFO] [stdout]   --> src/lib.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | const CHILDREN_LENGTH: usize = 15;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]    --> src/lib.rs:116:16
[INFO] [stdout]     |
[INFO] [stdout] 116 |     pub struct Node {
[INFO] [stdout]     |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `iter` and `canidates` are never used
[INFO] [stdout]    --> src/lib.rs:121:16
[INFO] [stdout]     |
[INFO] [stdout] 120 |     impl Node {
[INFO] [stdout]     |     --------- methods in this implementation
[INFO] [stdout] 121 |         pub fn iter(&'static self) -> NodeIterator {
[INFO] [stdout]     |                ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 125 |         pub fn canidates<'a>(&'static self, word: &'a str, tolerance: u8) -> Vec<&'a str> {
[INFO] [stdout]     |                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NodeIterator` is never constructed
[INFO] [stdout]    --> src/lib.rs:144:16
[INFO] [stdout]     |
[INFO] [stdout] 144 |     pub struct NodeIterator {
[INFO] [stdout]     |                ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/lib.rs:149:12
[INFO] [stdout]     |
[INFO] [stdout] 148 |     impl NodeIterator {
[INFO] [stdout]     |     ----------------- associated function in this implementation
[INFO] [stdout] 149 |         fn new(node: &'static Node) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `CHILDREN_LENGTH` is never used
[INFO] [stdout]   --> src/lib.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | const CHILDREN_LENGTH: usize = 15;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]    --> src/lib.rs:116:16
[INFO] [stdout]     |
[INFO] [stdout] 116 |     pub struct Node {
[INFO] [stdout]     |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `iter` and `canidates` are never used
[INFO] [stdout]    --> src/lib.rs:121:16
[INFO] [stdout]     |
[INFO] [stdout] 120 |     impl Node {
[INFO] [stdout]     |     --------- methods in this implementation
[INFO] [stdout] 121 |         pub fn iter(&'static self) -> NodeIterator {
[INFO] [stdout]     |                ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 125 |         pub fn canidates<'a>(&'static self, word: &'a str, tolerance: u8) -> Vec<&'a str> {
[INFO] [stdout]     |                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `NodeIterator` is never constructed
[INFO] [stdout]    --> src/lib.rs:144:16
[INFO] [stdout]     |
[INFO] [stdout] 144 |     pub struct NodeIterator {
[INFO] [stdout]     |                ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/lib.rs:149:12
[INFO] [stdout]     |
[INFO] [stdout] 148 |     impl NodeIterator {
[INFO] [stdout]     |     ----------------- associated function in this implementation
[INFO] [stdout] 149 |         fn new(node: &'static Node) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "79ec26c74d1e18040173fa4571ebf6477e96d090e5aadf9e1fa4abdea132bd42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79ec26c74d1e18040173fa4571ebf6477e96d090e5aadf9e1fa4abdea132bd42", kill_on_drop: false }`
[INFO] [stdout] 79ec26c74d1e18040173fa4571ebf6477e96d090e5aadf9e1fa4abdea132bd42