[INFO] cloning repository https://github.com/illionillion/rust-learning-docs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/illionillion/rust-learning-docs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fillionillion%2Frust-learning-docs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fillionillion%2Frust-learning-docs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c884cd19f966ca577524d67138f444a1b5fb97cb
[INFO] testing illionillion/rust-learning-docs against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fillionillion%2Frust-learning-docs" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/illionillion/rust-learning-docs
[INFO] finished tweaking git repo https://github.com/illionillion/rust-learning-docs
[INFO] tweaked toml for git repo https://github.com/illionillion/rust-learning-docs written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/illionillion/rust-learning-docs on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/illionillion/rust-learning-docs 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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 57bf9583e5a5b0fd457cdc6af8fd7098173c382cfb4e52b64f4882c355f33d61
[INFO] running `Command { std: "docker" "start" "-a" "57bf9583e5a5b0fd457cdc6af8fd7098173c382cfb4e52b64f4882c355f33d61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "57bf9583e5a5b0fd457cdc6af8fd7098173c382cfb4e52b64f4882c355f33d61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57bf9583e5a5b0fd457cdc6af8fd7098173c382cfb4e52b64f4882c355f33d61", kill_on_drop: false }`
[INFO] [stdout] 57bf9583e5a5b0fd457cdc6af8fd7098173c382cfb4e52b64f4882c355f33d61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 788e5b070fef5f30a1c105987021d102ec71602f54141ce0584b29ac6baa0f57
[INFO] running `Command { std: "docker" "start" "-a" "788e5b070fef5f30a1c105987021d102ec71602f54141ce0584b29ac6baa0f57", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-learning-docs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "788e5b070fef5f30a1c105987021d102ec71602f54141ce0584b29ac6baa0f57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "788e5b070fef5f30a1c105987021d102ec71602f54141ce0584b29ac6baa0f57", kill_on_drop: false }`
[INFO] [stdout] 788e5b070fef5f30a1c105987021d102ec71602f54141ce0584b29ac6baa0f57
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee0d5f72873bc4328da67e3a72b997806c52246659992064280f59561e03b44f
[INFO] running `Command { std: "docker" "start" "-a" "ee0d5f72873bc4328da67e3a72b997806c52246659992064280f59561e03b44f", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-learning-docs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `logical`
[INFO] [stdout]  --> examples/data-types.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let logical: bool = true;
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_logical`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a_float`
[INFO] [stdout]  --> examples/data-types.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let a_float: f64 = 1.0;  // Regular annotation
[INFO] [stdout]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_a_float`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `an_integer`
[INFO] [stdout]  --> examples/data-types.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let an_integer   = 5i32; // Suffix annotation
[INFO] [stdout]   |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_an_integer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `default_float`
[INFO] [stdout]   --> examples/data-types.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let default_float   = 3.0; // `f64`
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_default_float`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `default_integer`
[INFO] [stdout]   --> examples/data-types.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let default_integer = 7;   // `i32`
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_default_integer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `inferred_type` is assigned to, but never used
[INFO] [stdout]   --> examples/data-types.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut inferred_type = 12; // Type i64 is inferred from another line.
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_inferred_type` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `mutable` is assigned to, but never used
[INFO] [stdout]   --> examples/data-types.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let mut mutable = 12; // Mutable `i32`
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_mutable` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mutable`
[INFO] [stdout]   --> examples/data-types.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     let mutable = true;
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mutable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `inferred_type` is never read
[INFO] [stdout]   --> examples/data-types.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     inferred_type = 4294967296i64;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `mutable` is never read
[INFO] [stdout]   --> examples/data-types.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 |     mutable = 21;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "ee0d5f72873bc4328da67e3a72b997806c52246659992064280f59561e03b44f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee0d5f72873bc4328da67e3a72b997806c52246659992064280f59561e03b44f", kill_on_drop: false }`
[INFO] [stdout] ee0d5f72873bc4328da67e3a72b997806c52246659992064280f59561e03b44f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] bf888a588499bb7b41c37f3b9f5094c7fa1a8d70a3b92f601fac00d3659e4961
[INFO] running `Command { std: "docker" "start" "-a" "bf888a588499bb7b41c37f3b9f5094c7fa1a8d70a3b92f601fac00d3659e4961", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `logical`
[INFO] [stderr]  --> examples/data-types.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let logical: bool = true;
[INFO] [stderr]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_logical`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a_float`
[INFO] [stderr]  --> examples/data-types.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let a_float: f64 = 1.0;  // Regular annotation
[INFO] [stderr]   |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_a_float`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `an_integer`
[INFO] [stderr]  --> examples/data-types.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let an_integer   = 5i32; // Suffix annotation
[INFO] [stderr]   |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_an_integer`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `default_float`
[INFO] [stderr]   --> examples/data-types.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let default_float   = 3.0; // `f64`
[INFO] [stderr]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_default_float`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `default_integer`
[INFO] [stderr]   --> examples/data-types.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let default_integer = 7;   // `i32`
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_default_integer`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `inferred_type` is assigned to, but never used
[INFO] [stderr]   --> examples/data-types.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let mut inferred_type = 12; // Type i64 is inferred from another line.
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_inferred_type` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable `mutable` is assigned to, but never used
[INFO] [stderr]   --> examples/data-types.rs:24:9
[INFO] [stderr]    |
[INFO] [stderr] 24 |     let mut mutable = 12; // Mutable `i32`
[INFO] [stderr]    |         ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: consider using `_mutable` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `mutable`
[INFO] [stderr]   --> examples/data-types.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let mutable = true;
[INFO] [stderr]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mutable`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `inferred_type` is never read
[INFO] [stderr]   --> examples/data-types.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     inferred_type = 4294967296i64;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `mutable` is never read
[INFO] [stderr]   --> examples/data-types.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     mutable = 21;
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-learning-docs` (example "data-types") generated 10 warnings (run `cargo fix --example "data-types" -p rust-learning-docs` to apply 6 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_learning_docs-e9342556a907465a)
[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" "bf888a588499bb7b41c37f3b9f5094c7fa1a8d70a3b92f601fac00d3659e4961", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf888a588499bb7b41c37f3b9f5094c7fa1a8d70a3b92f601fac00d3659e4961", kill_on_drop: false }`
[INFO] [stdout] bf888a588499bb7b41c37f3b9f5094c7fa1a8d70a3b92f601fac00d3659e4961