[INFO] cloning repository https://github.com/anhlt/rust_toydb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/anhlt/rust_toydb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanhlt%2Frust_toydb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanhlt%2Frust_toydb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1c35884ccb48f61f1243e3b28f82aaaa27762664
[INFO] checking anhlt/rust_toydb against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanhlt%2Frust_toydb" "/workspace/builds/worker-75/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-75/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/anhlt/rust_toydb on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/anhlt/rust_toydb
[INFO] finished tweaking git repo https://github.com/anhlt/rust_toydb
[INFO] tweaked toml for git repo https://github.com/anhlt/rust_toydb written to /workspace/builds/worker-75/source/Cargo.toml
[INFO] crate git repo https://github.com/anhlt/rust_toydb already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "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-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b471053238c47184ebde3f647de1c0c4487aa8a93f1dbb128ad9eafd9f5cda37
[INFO] running `Command { std: "docker" "start" "-a" "b471053238c47184ebde3f647de1c0c4487aa8a93f1dbb128ad9eafd9f5cda37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b471053238c47184ebde3f647de1c0c4487aa8a93f1dbb128ad9eafd9f5cda37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b471053238c47184ebde3f647de1c0c4487aa8a93f1dbb128ad9eafd9f5cda37", kill_on_drop: false }`
[INFO] [stdout] b471053238c47184ebde3f647de1c0c4487aa8a93f1dbb128ad9eafd9f5cda37
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-75/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b24991cef8b12ed50499fe779b68f0f26db4d2bebe45cb3db182600c9d4a5b22
[INFO] running `Command { std: "docker" "start" "-a" "b24991cef8b12ed50499fe779b68f0f26db4d2bebe45cb3db182600c9d4a5b22", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking toydb v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/lib.rs from 2018 edition to 2021
[INFO] [stdout] warning: associated function is never used: `pos_and_data`
[INFO] [stdout]   --> src/file_system/mem.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn pos_and_data(&self) -> (u64, &[u8]) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Header`
[INFO] [stdout]   --> src/file_system/mod.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct Header {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Slot`
[INFO] [stdout]   --> src/file_system/mod.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | struct Slot {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating tests/intergration_test.rs from 2018 edition to 2021
[INFO] [stdout] warning: struct is never constructed: `Header`
[INFO] [stdout]   --> src/file_system/mod.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct Header {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Slot`
[INFO] [stdout]   --> src/file_system/mod.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | struct Slot {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pos_and_data`
[INFO] [stdout]   --> src/file_system/mem.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn pos_and_data(&self) -> (u64, &[u8]) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Header`
[INFO] [stdout]   --> src/file_system/mod.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct Header {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Slot`
[INFO] [stdout]   --> src/file_system/mod.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | struct Slot {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Header`
[INFO] [stdout]   --> src/file_system/mod.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct Header {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Slot`
[INFO] [stdout]   --> src/file_system/mod.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | struct Slot {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]        Fixed tests/intergration_test.rs (2 fixes)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> tests/intergration_test.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     page.add(&PlainStringRecord::new("Helloword"), 12);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.21s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking toydb v0.1.0 (/tmp/fixit)
[INFO] [stdout] warning: associated function is never used: `pos_and_data`
[INFO] [stdout]   --> src/file_system/mem.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn pos_and_data(&self) -> (u64, &[u8]) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Header`
[INFO] [stdout]   --> src/file_system/mod.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct Header {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Slot`
[INFO] [stdout]   --> src/file_system/mod.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | struct Slot {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Header`
[INFO] [stdout]   --> src/file_system/mod.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct Header {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Slot`
[INFO] [stdout]   --> src/file_system/mod.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | struct Slot {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pos_and_data`
[INFO] [stdout]   --> src/file_system/mem.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn pos_and_data(&self) -> (u64, &[u8]) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Header`
[INFO] [stdout]   --> src/file_system/mod.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct Header {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Slot`
[INFO] [stdout]   --> src/file_system/mod.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | struct Slot {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> tests/intergration_test.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     page.add(&PlainStringRecord::new("Helloword"), 12);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Header`
[INFO] [stdout]   --> src/file_system/mod.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct Header {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Slot`
[INFO] [stdout]   --> src/file_system/mod.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | struct Slot {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.30s
[INFO] running `Command { std: "docker" "inspect" "b24991cef8b12ed50499fe779b68f0f26db4d2bebe45cb3db182600c9d4a5b22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b24991cef8b12ed50499fe779b68f0f26db4d2bebe45cb3db182600c9d4a5b22", kill_on_drop: false }`
[INFO] [stdout] b24991cef8b12ed50499fe779b68f0f26db4d2bebe45cb3db182600c9d4a5b22