[INFO] fetching crate command-builder 0.2.0...
[INFO] checking command-builder-0.2.0 against master#ff1737bb00913444173658b4e0b274fd79aabf66 for pr-132712-1
[INFO] extracting crate command-builder 0.2.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate command-builder 0.2.0 on toolchain ff1737bb00913444173658b4e0b274fd79aabf66
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate command-builder 0.2.0
[INFO] finished tweaking crates.io crate command-builder 0.2.0
[INFO] tweaked toml for crates.io crate command-builder 0.2.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "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" "+ff1737bb00913444173658b4e0b274fd79aabf66" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 599c4feecf6c98f934dd112e2c620f97ad6a8069f0dee24a5e65b1fac2efcadc
[INFO] running `Command { std: "docker" "start" "-a" "599c4feecf6c98f934dd112e2c620f97ad6a8069f0dee24a5e65b1fac2efcadc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "599c4feecf6c98f934dd112e2c620f97ad6a8069f0dee24a5e65b1fac2efcadc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "599c4feecf6c98f934dd112e2c620f97ad6a8069f0dee24a5e65b1fac2efcadc", kill_on_drop: false }`
[INFO] [stdout] 599c4feecf6c98f934dd112e2c620f97ad6a8069f0dee24a5e65b1fac2efcadc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 61e68c95d8e8af04ee4d4180792ec84889957c3bc6de905caf7a251d08cbfbe1
[INFO] running `Command { std: "docker" "start" "-a" "61e68c95d8e8af04ee4d4180792ec84889957c3bc6de905caf7a251d08cbfbe1", kill_on_drop: false }`
[INFO] [stderr]     Checking command-builder v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `a` found for struct `Single` in the current scope
[INFO] [stdout]    --> src/lib.rs:8:14
[INFO] [stdout]     |
[INFO] [stdout] 7   |           let command = Single::new("echo")
[INFO] [stdout]     |  _______________________-
[INFO] [stdout] 8   | |             .a("foo\nbar\nbaz")
[INFO] [stdout]     | |             -^ method not found in `Single`
[INFO] [stdout]     | |_____________|
[INFO] [stdout]     |
[INFO] [stdout] ...
[INFO] [stdout] 453 |   pub struct Single(Vec<String>);
[INFO] [stdout]     |   ----------------- method `a` not found for this struct
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `a` found for struct `Single` in the current scope
[INFO] [stdout]    --> src/lib.rs:9:39
[INFO] [stdout]     |
[INFO] [stdout] 9   |             .pipe(Single::new("grep").a("bar"));
[INFO] [stdout]     |                                       ^ method not found in `Single`
[INFO] [stdout] ...
[INFO] [stdout] 453 | pub struct Single(Vec<String>);
[INFO] [stdout]     | ----------------- method `a` not found for this struct
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `command-builder` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "61e68c95d8e8af04ee4d4180792ec84889957c3bc6de905caf7a251d08cbfbe1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61e68c95d8e8af04ee4d4180792ec84889957c3bc6de905caf7a251d08cbfbe1", kill_on_drop: false }`
[INFO] [stdout] 61e68c95d8e8af04ee4d4180792ec84889957c3bc6de905caf7a251d08cbfbe1