[INFO] fetching crate sizef 0.2.1...
[INFO] testing sizef-0.2.1 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-2
[INFO] extracting crate sizef 0.2.1 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate sizef 0.2.1
[INFO] finished tweaking crates.io crate sizef 0.2.1
[INFO] tweaked toml for crates.io crate sizef 0.2.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate sizef 0.2.1 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate sizef 0.2.1 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" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 054520b72e637ad7c5f54ff1b2ef93e7da813fbbecc3f26a645b4082dced27a1
[INFO] running `Command { std: "docker" "start" "-a" "054520b72e637ad7c5f54ff1b2ef93e7da813fbbecc3f26a645b4082dced27a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "054520b72e637ad7c5f54ff1b2ef93e7da813fbbecc3f26a645b4082dced27a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "054520b72e637ad7c5f54ff1b2ef93e7da813fbbecc3f26a645b4082dced27a1", kill_on_drop: false }`
[INFO] [stdout] 054520b72e637ad7c5f54ff1b2ef93e7da813fbbecc3f26a645b4082dced27a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bac7f4caf528de0329e8240a9f11f74312e1e894b38319ad2e363ce9aa171034
[INFO] running `Command { std: "docker" "start" "-a" "bac7f4caf528de0329e8240a9f11f74312e1e894b38319ad2e363ce9aa171034", kill_on_drop: false }`
[INFO] [stderr]    Compiling sizef v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "bac7f4caf528de0329e8240a9f11f74312e1e894b38319ad2e363ce9aa171034", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bac7f4caf528de0329e8240a9f11f74312e1e894b38319ad2e363ce9aa171034", kill_on_drop: false }`
[INFO] [stdout] bac7f4caf528de0329e8240a9f11f74312e1e894b38319ad2e363ce9aa171034
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 01a090285c8de976cbbc79792e072dc7118d84fd22ad89ca2a8d628ee8eeeccc
[INFO] running `Command { std: "docker" "start" "-a" "01a090285c8de976cbbc79792e072dc7118d84fd22ad89ca2a8d628ee8eeeccc", kill_on_drop: false }`
[INFO] [stderr]    Compiling sizef v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `sizef` (lib test) due to 2 previous errors
[INFO] [stdout] error[E0433]: cannot find type `String` in this scope
[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]: cannot find type `String` in this scope
[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] running `Command { std: "docker" "inspect" "01a090285c8de976cbbc79792e072dc7118d84fd22ad89ca2a8d628ee8eeeccc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01a090285c8de976cbbc79792e072dc7118d84fd22ad89ca2a8d628ee8eeeccc", kill_on_drop: false }`
[INFO] [stdout] 01a090285c8de976cbbc79792e072dc7118d84fd22ad89ca2a8d628ee8eeeccc