[INFO] fetching crate tinylog 5.0.1...
[INFO] testing tinylog-5.0.1 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate tinylog 5.0.1 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate tinylog 5.0.1
[INFO] finished tweaking crates.io crate tinylog 5.0.1
[INFO] tweaked toml for crates.io crate tinylog 5.0.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tinylog 5.0.1 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate tinylog 5.0.1 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" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded supports-color v3.0.2
[INFO] [stderr]   Downloaded is_ci v1.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 89338cd4785a3a9593b95f3f7ee648f18b98d38fc98bd610fd7ca8d786713ac1
[INFO] running `Command { std: "docker" "start" "89338cd4785a3a9593b95f3f7ee648f18b98d38fc98bd610fd7ca8d786713ac1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89338cd4785a3a9593b95f3f7ee648f18b98d38fc98bd610fd7ca8d786713ac1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "89338cd4785a3a9593b95f3f7ee648f18b98d38fc98bd610fd7ca8d786713ac1" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89338cd4785a3a9593b95f3f7ee648f18b98d38fc98bd610fd7ca8d786713ac1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "89338cd4785a3a9593b95f3f7ee648f18b98d38fc98bd610fd7ca8d786713ac1" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling is_ci v1.2.0
[INFO] [stderr]    Compiling supports-color v3.0.2
[INFO] [stderr]    Compiling tinylog v5.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: at least one of 'log' or 'tracing' features must be enabled
[INFO] [stdout]   --> src/lib.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | compile_error!("at least one of 'log' or 'tracing' features must be enabled");
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io`
[INFO] [stdout]  --> src/helpers.rs:4:39
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::{error::Error, fmt::Display, io};
[INFO] [stdout]   |                                       ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `error::Error`
[INFO] [stdout]  --> src/helpers.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::{error::Error, fmt::Display, io};
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `fmt::Display`
[INFO] [stdout]  --> src/helpers.rs:4:25
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::{error::Error, fmt::Display, io};
[INFO] [stdout]   |                         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tinylog` (lib) due to 1 previous error; 3 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "89338cd4785a3a9593b95f3f7ee648f18b98d38fc98bd610fd7ca8d786713ac1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89338cd4785a3a9593b95f3f7ee648f18b98d38fc98bd610fd7ca8d786713ac1", kill_on_drop: false }`
[INFO] [stdout] 89338cd4785a3a9593b95f3f7ee648f18b98d38fc98bd610fd7ca8d786713ac1
