[INFO] fetching crate command-builder 0.2.0...
[INFO] checking command-builder-0.2.0 against master#b3bd7058c139e71bae0862ef8f8ac936208873e9 for pr-123752
[INFO] extracting crate command-builder 0.2.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate command-builder 0.2.0 on toolchain b3bd7058c139e71bae0862ef8f8ac936208873e9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "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-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "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" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ed212e57141e36b74739ea18534da2b7f039436947f6a6810a610c6391784c06
[INFO] running `Command { std: "docker" "start" "-a" "ed212e57141e36b74739ea18534da2b7f039436947f6a6810a610c6391784c06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ed212e57141e36b74739ea18534da2b7f039436947f6a6810a610c6391784c06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed212e57141e36b74739ea18534da2b7f039436947f6a6810a610c6391784c06", kill_on_drop: false }`
[INFO] [stdout] ed212e57141e36b74739ea18534da2b7f039436947f6a6810a610c6391784c06
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+b3bd7058c139e71bae0862ef8f8ac936208873e9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7e69928588a6405382ae3f435f03bd48e5998d7b846c734a1bc39d1328b7d540
[INFO] running `Command { std: "docker" "start" "-a" "7e69928588a6405382ae3f435f03bd48e5998d7b846c734a1bc39d1328b7d540", 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] warning: fields `on` and `keys` are never read
[INFO] [stdout]    --> src/lib.rs:179:5
[INFO] [stdout]     |
[INFO] [stdout] 174 | pub struct ExceptEnvs<C, I>
[INFO] [stdout]     |            ---------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 179 |     on: C,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 180 |     keys: I,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ExceptEnvs` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[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] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[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 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "7e69928588a6405382ae3f435f03bd48e5998d7b846c734a1bc39d1328b7d540", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e69928588a6405382ae3f435f03bd48e5998d7b846c734a1bc39d1328b7d540", kill_on_drop: false }`
[INFO] [stdout] 7e69928588a6405382ae3f435f03bd48e5998d7b846c734a1bc39d1328b7d540
