[INFO] cloning repository https://github.com/Experiment5X/LsmTree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Experiment5X/LsmTree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FExperiment5X%2FLsmTree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FExperiment5X%2FLsmTree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 94c1d51572848d6f01a60f4eb6b1fd7453a98853
[INFO] checking Experiment5X/LsmTree/94c1d51572848d6f01a60f4eb6b1fd7453a98853 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FExperiment5X%2FLsmTree" "/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/Experiment5X/LsmTree 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/Experiment5X/LsmTree
[INFO] finished tweaking git repo https://github.com/Experiment5X/LsmTree
[INFO] tweaked toml for git repo https://github.com/Experiment5X/LsmTree written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Experiment5X/LsmTree 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded file-utils v0.1.5
[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] 992c4b64af401a74bd0530b6482c065f0febd6c223342efcdfcdf9776a7870df
[INFO] running `Command { std: "docker" "start" "-a" "992c4b64af401a74bd0530b6482c065f0febd6c223342efcdfcdf9776a7870df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "992c4b64af401a74bd0530b6482c065f0febd6c223342efcdfcdf9776a7870df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "992c4b64af401a74bd0530b6482c065f0febd6c223342efcdfcdf9776a7870df", kill_on_drop: false }`
[INFO] [stdout] 992c4b64af401a74bd0530b6482c065f0febd6c223342efcdfcdf9776a7870df
[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] d06cf060541ece293a45c93ffe8fdc83ff897b0571be1e4a88040dae439fa48d
[INFO] running `Command { std: "docker" "start" "-a" "d06cf060541ece293a45c93ffe8fdc83ff897b0571be1e4a88040dae439fa48d", kill_on_drop: false }`
[INFO] [stderr]     Checking file-utils v0.1.5
[INFO] [stderr]     Checking adams_sql v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant `DIRECTORY_PREFIX` is never used
[INFO] [stdout]   --> src/store/segment.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | const DIRECTORY_PREFIX: &str = "./";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `file_name` is never read
[INFO] [stdout]   --> src/store/segment.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Segment {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 27 |     file_name: String,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `sparse_index` is never read
[INFO] [stdout]  --> src/store/segment_index.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct SegmentIndex {
[INFO] [stdout]   |            ------------ field in this struct
[INFO] [stdout] 8 |     pub sparse_index: BTreeMap<String, usize>,
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         io::stdout().flush();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let _ = io::stdout().flush();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DIRECTORY_PREFIX` is never used
[INFO] [stdout]   --> src/store/segment.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | const DIRECTORY_PREFIX: &str = "./";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `file_name` is never read
[INFO] [stdout]   --> src/store/segment.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Segment {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 27 |     file_name: String,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `sparse_index` is never read
[INFO] [stdout]  --> src/store/segment_index.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct SegmentIndex {
[INFO] [stdout]   |            ------------ field in this struct
[INFO] [stdout] 8 |     pub sparse_index: BTreeMap<String, usize>,
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         io::stdout().flush();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let _ = io::stdout().flush();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "d06cf060541ece293a45c93ffe8fdc83ff897b0571be1e4a88040dae439fa48d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d06cf060541ece293a45c93ffe8fdc83ff897b0571be1e4a88040dae439fa48d", kill_on_drop: false }`
[INFO] [stdout] d06cf060541ece293a45c93ffe8fdc83ff897b0571be1e4a88040dae439fa48d