[INFO] cloning repository https://github.com/miyamofigo/simple_database
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/miyamofigo/simple_database" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmiyamofigo%2Fsimple_database", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmiyamofigo%2Fsimple_database'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c7044256f94cecfd839c7a1f3e292877fd650b5a
[INFO] testing miyamofigo/simple_database against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmiyamofigo%2Fsimple_database" "/workspace/builds/worker-24/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-24/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/miyamofigo/simple_database on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/miyamofigo/simple_database
[INFO] finished tweaking git repo https://github.com/miyamofigo/simple_database
[INFO] tweaked toml for git repo https://github.com/miyamofigo/simple_database written to /workspace/builds/worker-24/source/Cargo.toml
[INFO] crate git repo https://github.com/miyamofigo/simple_database already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded gcc v0.3.8
[INFO] [stderr]   Downloaded time v0.1.26
[INFO] [stderr]   Downloaded libc v0.1.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b910b20a4260eef676c3f4e6a5251cf55c5e2d67225b70f0cacfe47871416f90
[INFO] running `Command { std: "docker" "start" "-a" "b910b20a4260eef676c3f4e6a5251cf55c5e2d67225b70f0cacfe47871416f90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b910b20a4260eef676c3f4e6a5251cf55c5e2d67225b70f0cacfe47871416f90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b910b20a4260eef676c3f4e6a5251cf55c5e2d67225b70f0cacfe47871416f90", kill_on_drop: false }`
[INFO] [stdout] b910b20a4260eef676c3f4e6a5251cf55c5e2d67225b70f0cacfe47871416f90
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9abc57a3ee820e3784998335540e7eb253c328e22c287b71a3fe13f4f9a4586f
[INFO] running `Command { std: "docker" "start" "-a" "9abc57a3ee820e3784998335540e7eb253c328e22c287b71a3fe13f4f9a4586f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling gcc v0.3.8
[INFO] [stderr]    Compiling libc v0.1.8
[INFO] [stderr]    Compiling time v0.1.26
[INFO] [stderr]    Compiling simple_database v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fmt::Display`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::fmt::Display;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `add`
[INFO] [stdout]    --> src/main.rs:188:6
[INFO] [stdout]     |
[INFO] [stdout] 188 |     let add = "add".to_string();
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_add`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `latest`
[INFO] [stdout]    --> src/main.rs:189:6
[INFO] [stdout]     |
[INFO] [stdout] 189 |     let latest = "latest".to_string();
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_latest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `all`
[INFO] [stdout]    --> src/main.rs:190:6
[INFO] [stdout]     |
[INFO] [stdout] 190 |     let all = "all".to_string();
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_all`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/main.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn new(name: &str,
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:127:3
[INFO] [stdout]     |
[INFO] [stdout] 127 |         file.write(item.to_string().as_bytes());
[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: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.92s
[INFO] running `Command { std: "docker" "inspect" "9abc57a3ee820e3784998335540e7eb253c328e22c287b71a3fe13f4f9a4586f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9abc57a3ee820e3784998335540e7eb253c328e22c287b71a3fe13f4f9a4586f", kill_on_drop: false }`
[INFO] [stdout] 9abc57a3ee820e3784998335540e7eb253c328e22c287b71a3fe13f4f9a4586f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a298dd5cfb32be3f62cc3cc98c89e0b9d3a8a72129ac653c50f8feb5a30c7edf
[INFO] running `Command { std: "docker" "start" "-a" "a298dd5cfb32be3f62cc3cc98c89e0b9d3a8a72129ac653c50f8feb5a30c7edf", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling simple_database v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fmt::Display`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::fmt::Display;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `add`
[INFO] [stdout]    --> src/main.rs:188:6
[INFO] [stdout]     |
[INFO] [stdout] 188 |     let add = "add".to_string();
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_add`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `latest`
[INFO] [stdout]    --> src/main.rs:189:6
[INFO] [stdout]     |
[INFO] [stdout] 189 |     let latest = "latest".to_string();
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_latest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `all`
[INFO] [stdout]    --> src/main.rs:190:6
[INFO] [stdout]     |
[INFO] [stdout] 190 |     let all = "all".to_string();
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_all`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/main.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn new(name: &str,
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:127:3
[INFO] [stdout]     |
[INFO] [stdout] 127 |         file.write(item.to_string().as_bytes());
[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: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 9.44s
[INFO] running `Command { std: "docker" "inspect" "a298dd5cfb32be3f62cc3cc98c89e0b9d3a8a72129ac653c50f8feb5a30c7edf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a298dd5cfb32be3f62cc3cc98c89e0b9d3a8a72129ac653c50f8feb5a30c7edf", kill_on_drop: false }`
[INFO] [stdout] a298dd5cfb32be3f62cc3cc98c89e0b9d3a8a72129ac653c50f8feb5a30c7edf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8cb4b06762ed21859d7c2d9642d01143dd8bc19fa5570f9716565ec8ef4a3804
[INFO] running `Command { std: "docker" "start" "-a" "8cb4b06762ed21859d7c2d9642d01143dd8bc19fa5570f9716565ec8ef4a3804", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused import: `std::fmt::Display`
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::fmt::Display;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `add`
[INFO] [stderr]    --> src/main.rs:188:6
[INFO] [stderr]     |
[INFO] [stderr] 188 |     let add = "add".to_string();
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_add`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `latest`
[INFO] [stderr]    --> src/main.rs:189:6
[INFO] [stderr]     |
[INFO] [stderr] 189 |     let latest = "latest".to_string();
[INFO] [stderr]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_latest`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `all`
[INFO] [stderr]    --> src/main.rs:190:6
[INFO] [stderr]     |
[INFO] [stderr] 190 |     let all = "all".to_string();
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_all`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/main.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     fn new(name: &str,
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/main.rs:127:3
[INFO] [stderr]     |
[INFO] [stderr] 127 |         file.write(item.to_string().as_bytes());
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `simple_database` (bin "simple_database" test) generated 6 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.15s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/simple_database-433df263ced5de7b)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8cb4b06762ed21859d7c2d9642d01143dd8bc19fa5570f9716565ec8ef4a3804", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cb4b06762ed21859d7c2d9642d01143dd8bc19fa5570f9716565ec8ef4a3804", kill_on_drop: false }`
[INFO] [stdout] 8cb4b06762ed21859d7c2d9642d01143dd8bc19fa5570f9716565ec8ef4a3804