[INFO] cloning repository https://github.com/CircuitCoder/MeowBox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CircuitCoder/MeowBox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCircuitCoder%2FMeowBox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCircuitCoder%2FMeowBox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 01c59ac7d193595e0796eb87545f4567fa5d9c11
[INFO] checking CircuitCoder/MeowBox/01c59ac7d193595e0796eb87545f4567fa5d9c11 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCircuitCoder%2FMeowBox" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CircuitCoder/MeowBox 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/CircuitCoder/MeowBox
[INFO] finished tweaking git repo https://github.com/CircuitCoder/MeowBox
[INFO] tweaked toml for git repo https://github.com/CircuitCoder/MeowBox written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/CircuitCoder/MeowBox 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] b804a97053a91577bbf5c5357c14d70b8089fbcdf0bd09e0912694ffcd0fb26c
[INFO] running `Command { std: "docker" "start" "-a" "b804a97053a91577bbf5c5357c14d70b8089fbcdf0bd09e0912694ffcd0fb26c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b804a97053a91577bbf5c5357c14d70b8089fbcdf0bd09e0912694ffcd0fb26c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b804a97053a91577bbf5c5357c14d70b8089fbcdf0bd09e0912694ffcd0fb26c", kill_on_drop: false }`
[INFO] [stdout] b804a97053a91577bbf5c5357c14d70b8089fbcdf0bd09e0912694ffcd0fb26c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 4d994b88d36a2b56f90987e2b4cab28021146612d087bc200ca35f0138b51c91
[INFO] running `Command { std: "docker" "start" "-a" "4d994b88d36a2b56f90987e2b4cab28021146612d087bc200ca35f0138b51c91", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking meow-box v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::sync::*`
[INFO] [stdout]  --> src/record.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::sync::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::*`
[INFO] [stdout]  --> src/record.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::sync::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get` is never used
[INFO] [stdout]   --> src/storage.rs:51:10
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl Storage {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 51 |   pub fn get(&self, id: u64) -> Option<StorageFile> {
[INFO] [stdout]    |          ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> src/storage.rs:73:3
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub struct StorageFile {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] 73 |   id: u64,
[INFO] [stdout]    |   ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `StorageFile` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `FieldType` is never used
[INFO] [stdout]  --> src/record.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum FieldType {
[INFO] [stdout]   |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `len` is never used
[INFO] [stdout]   --> src/record.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl FieldType {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 12 |   fn len(&self) -> usize {
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Schema` is never constructed
[INFO] [stdout]   --> src/record.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct Schema {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `len` is never used
[INFO] [stdout]   --> src/record.rs:25:6
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Schema {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] 25 |   fn len(&self) -> usize {
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Record` is never constructed
[INFO] [stdout]   --> src/record.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | struct Record<'a> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cursor` is never constructed
[INFO] [stdout]   --> src/record.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | struct Cursor<'a> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `next` is never used
[INFO] [stdout]   --> src/record.rs:48:6
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl<'a> Cursor<'a> {
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] 48 |   fn next<'b>(&'b mut self) -> Option<Record<'b>> {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Manager` is never constructed
[INFO] [stdout]   --> src/record.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 77 | struct Manager {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `read_page`, and `cursor` are never used
[INFO] [stdout]   --> src/record.rs:83:10
[INFO] [stdout]    |
[INFO] [stdout] 82 | impl Manager {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 83 |   pub fn new(storage: StorageFile, occupied: Vec<usize>) -> Manager {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] ...
[INFO] [stdout] 87 |   pub fn read_page(&mut self, at: usize, buf: &mut Page) -> Option<usize> {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 95 |   fn cursor<'a>(&'a mut self, schema: Schema) -> Cursor<'a> {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get` is never used
[INFO] [stdout]   --> src/storage.rs:51:10
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl Storage {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 51 |   pub fn get(&self, id: u64) -> Option<StorageFile> {
[INFO] [stdout]    |          ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> src/storage.rs:73:3
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub struct StorageFile {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] 73 |   id: u64,
[INFO] [stdout]    |   ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `StorageFile` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `FieldType` is never used
[INFO] [stdout]  --> src/record.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum FieldType {
[INFO] [stdout]   |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `len` is never used
[INFO] [stdout]   --> src/record.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl FieldType {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 12 |   fn len(&self) -> usize {
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Schema` is never constructed
[INFO] [stdout]   --> src/record.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct Schema {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `len` is never used
[INFO] [stdout]   --> src/record.rs:25:6
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Schema {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] 25 |   fn len(&self) -> usize {
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Record` is never constructed
[INFO] [stdout]   --> src/record.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | struct Record<'a> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cursor` is never constructed
[INFO] [stdout]   --> src/record.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | struct Cursor<'a> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `next` is never used
[INFO] [stdout]   --> src/record.rs:48:6
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl<'a> Cursor<'a> {
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] 48 |   fn next<'b>(&'b mut self) -> Option<Record<'b>> {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Manager` is never constructed
[INFO] [stdout]   --> src/record.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 77 | struct Manager {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `read_page`, and `cursor` are never used
[INFO] [stdout]   --> src/record.rs:83:10
[INFO] [stdout]    |
[INFO] [stdout] 82 | impl Manager {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 83 |   pub fn new(storage: StorageFile, occupied: Vec<usize>) -> Manager {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] ...
[INFO] [stdout] 87 |   pub fn read_page(&mut self, at: usize, buf: &mut Page) -> Option<usize> {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 95 |   fn cursor<'a>(&'a mut self, schema: Schema) -> Cursor<'a> {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/record.rs:90:7
[INFO] [stdout]    |
[INFO] [stdout] 90 |       self.storage.read_page(at, buf);
[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] 90 |       let _ = self.storage.read_page(at, buf);
[INFO] [stdout]    |       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/record.rs:90:7
[INFO] [stdout]    |
[INFO] [stdout] 90 |       self.storage.read_page(at, buf);
[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] 90 |       let _ = self.storage.read_page(at, buf);
[INFO] [stdout]    |       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.97s
[INFO] running `Command { std: "docker" "inspect" "4d994b88d36a2b56f90987e2b4cab28021146612d087bc200ca35f0138b51c91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d994b88d36a2b56f90987e2b4cab28021146612d087bc200ca35f0138b51c91", kill_on_drop: false }`
[INFO] [stdout] 4d994b88d36a2b56f90987e2b4cab28021146612d087bc200ca35f0138b51c91