[INFO] fetching crate sizef 0.2.0...
[INFO] testing sizef-0.2.0 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate sizef 0.2.0 into /workspace/builds/worker-2-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-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sizef 0.2.0 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4bfcb941b0052e736ba81e8528837096c85ebc64d1b9692750b89e1c7e2b5763
[INFO] running `Command { std: "docker" "start" "-a" "4bfcb941b0052e736ba81e8528837096c85ebc64d1b9692750b89e1c7e2b5763", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4bfcb941b0052e736ba81e8528837096c85ebc64d1b9692750b89e1c7e2b5763", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bfcb941b0052e736ba81e8528837096c85ebc64d1b9692750b89e1c7e2b5763", kill_on_drop: false }`
[INFO] [stdout] 4bfcb941b0052e736ba81e8528837096c85ebc64d1b9692750b89e1c7e2b5763
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9362ad73e864ee56b3f20a9b42af6be58a758e614d48bdf63c8f4ff82767eb51
[INFO] running `Command { std: "docker" "start" "-a" "9362ad73e864ee56b3f20a9b42af6be58a758e614d48bdf63c8f4ff82767eb51", kill_on_drop: false }`
[INFO] [stderr]    Compiling sizef v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "9362ad73e864ee56b3f20a9b42af6be58a758e614d48bdf63c8f4ff82767eb51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9362ad73e864ee56b3f20a9b42af6be58a758e614d48bdf63c8f4ff82767eb51", kill_on_drop: false }`
[INFO] [stdout] 9362ad73e864ee56b3f20a9b42af6be58a758e614d48bdf63c8f4ff82767eb51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d7a77a1a6ad380577e8377b2e12d8f06378c4d673cdf2b039535980e09cbe52e
[INFO] running `Command { std: "docker" "start" "-a" "d7a77a1a6ad380577e8377b2e12d8f06378c4d673cdf2b039535980e09cbe52e", 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: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] 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] 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" "d7a77a1a6ad380577e8377b2e12d8f06378c4d673cdf2b039535980e09cbe52e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7a77a1a6ad380577e8377b2e12d8f06378c4d673cdf2b039535980e09cbe52e", kill_on_drop: false }`
[INFO] [stdout] d7a77a1a6ad380577e8377b2e12d8f06378c4d673cdf2b039535980e09cbe52e