[INFO] cloning repository https://github.com/atosh/tinydb
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/atosh/tinydb" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fatosh%2Ftinydb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fatosh%2Ftinydb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 341fb8b155c98055713a36fc135cb39991bb8178
[INFO] checking atosh/tinydb against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fatosh%2Ftinydb" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/atosh/tinydb on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/atosh/tinydb
[INFO] finished tweaking git repo https://github.com/atosh/tinydb
[INFO] tweaked toml for git repo https://github.com/atosh/tinydb written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/atosh/tinydb already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 05fc8b0b17f98710820f5b9b17d45d9f1c1a62fe7d01008f3e6fe022661efd18
[INFO] running `Command { std: "docker" "start" "-a" "05fc8b0b17f98710820f5b9b17d45d9f1c1a62fe7d01008f3e6fe022661efd18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "05fc8b0b17f98710820f5b9b17d45d9f1c1a62fe7d01008f3e6fe022661efd18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05fc8b0b17f98710820f5b9b17d45d9f1c1a62fe7d01008f3e6fe022661efd18", kill_on_drop: false }`
[INFO] [stdout] 05fc8b0b17f98710820f5b9b17d45d9f1c1a62fe7d01008f3e6fe022661efd18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7502cef0a58ab7c883c7c3bd8765d5d2f8a6429f5ee35268bab756fbfe1c50e2
[INFO] running `Command { std: "docker" "start" "-a" "7502cef0a58ab7c883c7c3bd8765d5d2f8a6429f5ee35268bab756fbfe1c50e2", kill_on_drop: false }`
[INFO] [stderr]     Checking tinydb v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `values`
[INFO] [stdout]    --> src/main.rs:172:30
[INFO] [stdout]     |
[INFO] [stdout] 172 |     pub fn insert(&mut self, values: &Vec<Datum>) -> &mut Table {
[INFO] [stdout]     |                              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_values`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `columns`
[INFO] [stdout]    --> src/main.rs:168:5
[INFO] [stdout]     |
[INFO] [stdout] 168 |     columns: Vec<Column>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `values`
[INFO] [stdout]    --> src/main.rs:172:30
[INFO] [stdout]     |
[INFO] [stdout] 172 |     pub fn insert(&mut self, values: &Vec<Datum>) -> &mut Table {
[INFO] [stdout]     |                              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_values`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `columns`
[INFO] [stdout]    --> src/main.rs:168:5
[INFO] [stdout]     |
[INFO] [stdout] 168 |     columns: Vec<Column>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "7502cef0a58ab7c883c7c3bd8765d5d2f8a6429f5ee35268bab756fbfe1c50e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7502cef0a58ab7c883c7c3bd8765d5d2f8a6429f5ee35268bab756fbfe1c50e2", kill_on_drop: false }`
[INFO] [stdout] 7502cef0a58ab7c883c7c3bd8765d5d2f8a6429f5ee35268bab756fbfe1c50e2