[INFO] fetching crate sizef 0.2.0...
[INFO] building sizef-0.2.0 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate sizef 0.2.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate sizef 0.2.0
[INFO] finished tweaking crates.io crate sizef 0.2.0
[INFO] tweaked toml for crates.io crate sizef 0.2.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sizef 0.2.0 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4288c54752496c96dc5409fa405a522073b62b9f3f162e109e3176f0ae8f913c
[INFO] running `Command { std: "docker" "start" "-a" "4288c54752496c96dc5409fa405a522073b62b9f3f162e109e3176f0ae8f913c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4288c54752496c96dc5409fa405a522073b62b9f3f162e109e3176f0ae8f913c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4288c54752496c96dc5409fa405a522073b62b9f3f162e109e3176f0ae8f913c", kill_on_drop: false }`
[INFO] [stdout] 4288c54752496c96dc5409fa405a522073b62b9f3f162e109e3176f0ae8f913c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e59609dce4034dbac86496c4e4771dbac8527da1699bfed5edd3f8b163c09355
[INFO] running `Command { std: "docker" "start" "-a" "e59609dce4034dbac86496c4e4771dbac8527da1699bfed5edd3f8b163c09355", kill_on_drop: false }`
[INFO] [stderr]    Compiling sizef v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "e59609dce4034dbac86496c4e4771dbac8527da1699bfed5edd3f8b163c09355", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e59609dce4034dbac86496c4e4771dbac8527da1699bfed5edd3f8b163c09355", kill_on_drop: false }`
[INFO] [stdout] e59609dce4034dbac86496c4e4771dbac8527da1699bfed5edd3f8b163c09355
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 57e138b4f29776cfa25fbc9768e117a51ef693b317d6d188a98d63d3e8f8e533
[INFO] running `Command { std: "docker" "start" "-a" "57e138b4f29776cfa25fbc9768e117a51ef693b317d6d188a98d63d3e8f8e533", kill_on_drop: false }`
[INFO] [stderr]    Compiling sizef v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `String`
[INFO] [stdout]   --> src/tests.rs:68:19
[INFO] [stdout]    |
[INFO] [stdout] 68 |     let mut buf = String::new();
[INFO] [stdout]    |                   ^^^^^^ use of undeclared type `String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `String`
[INFO] [stdout]  --> src/tests.rs:6:19
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut buf = String::new();
[INFO] [stdout]   |                   ^^^^^^ use of undeclared type `String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sizef` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "57e138b4f29776cfa25fbc9768e117a51ef693b317d6d188a98d63d3e8f8e533", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57e138b4f29776cfa25fbc9768e117a51ef693b317d6d188a98d63d3e8f8e533", kill_on_drop: false }`
[INFO] [stdout] 57e138b4f29776cfa25fbc9768e117a51ef693b317d6d188a98d63d3e8f8e533