[INFO] cloning repository https://github.com/mtfcd/tutorialdb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mtfcd/tutorialdb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmtfcd%2Ftutorialdb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmtfcd%2Ftutorialdb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cf1a6d88c614d90e45116afd8f47a3f97e4fa0cf
[INFO] checking mtfcd/tutorialdb against master#cccf075eba88363269e8589ebb8d40874cc542d8 for pr-142681
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmtfcd%2Ftutorialdb" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mtfcd/tutorialdb
[INFO] finished tweaking git repo https://github.com/mtfcd/tutorialdb
[INFO] tweaked toml for git repo https://github.com/mtfcd/tutorialdb written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mtfcd/tutorialdb on toolchain cccf075eba88363269e8589ebb8d40874cc542d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cccf075eba88363269e8589ebb8d40874cc542d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mtfcd/tutorialdb 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" "+cccf075eba88363269e8589ebb8d40874cc542d8" "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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+cccf075eba88363269e8589ebb8d40874cc542d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e1761328f441585518a378e676bad3866c66b8ff7834575fe91b602ba3450b4f
[INFO] running `Command { std: "docker" "start" "-a" "e1761328f441585518a378e676bad3866c66b8ff7834575fe91b602ba3450b4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1761328f441585518a378e676bad3866c66b8ff7834575fe91b602ba3450b4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1761328f441585518a378e676bad3866c66b8ff7834575fe91b602ba3450b4f", kill_on_drop: false }`
[INFO] [stdout] e1761328f441585518a378e676bad3866c66b8ff7834575fe91b602ba3450b4f
[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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+cccf075eba88363269e8589ebb8d40874cc542d8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c83593692347ccf5dfc1bf782cba239657a5f023077f7f8cb39b5f9f9f878ae2
[INFO] running `Command { std: "docker" "start" "-a" "c83593692347ccf5dfc1bf782cba239657a5f023077f7f8cb39b5f9f9f878ae2", kill_on_drop: false }`
[INFO] [stderr]     Checking tutorialdb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant `IS_ROOT_OFFSET` is never used
[INFO] [stdout]  --> src/btree.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 | const IS_ROOT_OFFSET: usize = NODE_TYPE_SIZE;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PARENT_POINTER_OFFSET` is never used
[INFO] [stdout]   --> src/btree.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 | const PARENT_POINTER_OFFSET: usize = IS_ROOT_OFFSET + IS_ROOT_SIZE;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/table.rs:118:17
[INFO] [stdout]     |
[INFO] [stdout] 118 |     pub fn find(&mut self, key: u32) -> Cursor {
[INFO] [stdout]     |                 ^^^^^^^^^               ------ the lifetime gets resolved as `'_`
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 118 |     pub fn find(&mut self, key: u32) -> Cursor<'_> {
[INFO] [stdout]     |                                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `IS_ROOT_OFFSET` is never used
[INFO] [stdout]  --> src/btree.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 | const IS_ROOT_OFFSET: usize = NODE_TYPE_SIZE;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PARENT_POINTER_OFFSET` is never used
[INFO] [stdout]   --> src/btree.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 | const PARENT_POINTER_OFFSET: usize = IS_ROOT_OFFSET + IS_ROOT_SIZE;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/table.rs:118:17
[INFO] [stdout]     |
[INFO] [stdout] 118 |     pub fn find(&mut self, key: u32) -> Cursor {
[INFO] [stdout]     |                 ^^^^^^^^^               ------ the lifetime gets resolved as `'_`
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]     |
[INFO] [stdout] 118 |     pub fn find(&mut self, key: u32) -> Cursor<'_> {
[INFO] [stdout]     |                                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "c83593692347ccf5dfc1bf782cba239657a5f023077f7f8cb39b5f9f9f878ae2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c83593692347ccf5dfc1bf782cba239657a5f023077f7f8cb39b5f9f9f878ae2", kill_on_drop: false }`
[INFO] [stdout] c83593692347ccf5dfc1bf782cba239657a5f023077f7f8cb39b5f9f9f878ae2