[INFO] fetching crate command-builder 0.2.0...
[INFO] testing command-builder-0.2.0 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate command-builder 0.2.0 into /workspace/builds/worker-3-tc2/source
[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-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate command-builder 0.2.0 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f2fcfa9ef58c88499374c255c1f756226224a7fd6a5f38ddca95803a201da5b1
[INFO] running `Command { std: "docker" "start" "-a" "f2fcfa9ef58c88499374c255c1f756226224a7fd6a5f38ddca95803a201da5b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2fcfa9ef58c88499374c255c1f756226224a7fd6a5f38ddca95803a201da5b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2fcfa9ef58c88499374c255c1f756226224a7fd6a5f38ddca95803a201da5b1", kill_on_drop: false }`
[INFO] [stdout] f2fcfa9ef58c88499374c255c1f756226224a7fd6a5f38ddca95803a201da5b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe6f6e9807280be9faf14439efab6d7cb9046a143b8d9b710b38be66fee20f05
[INFO] running `Command { std: "docker" "start" "-a" "fe6f6e9807280be9faf14439efab6d7cb9046a143b8d9b710b38be66fee20f05", kill_on_drop: false }`
[INFO] [stderr]    Compiling command-builder v0.2.0 (/opt/rustwide/workdir)
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "fe6f6e9807280be9faf14439efab6d7cb9046a143b8d9b710b38be66fee20f05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe6f6e9807280be9faf14439efab6d7cb9046a143b8d9b710b38be66fee20f05", kill_on_drop: false }`
[INFO] [stdout] fe6f6e9807280be9faf14439efab6d7cb9046a143b8d9b710b38be66fee20f05
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] adbda5009f8c979ea16377c56f18d4a5fad0b4b35ef2c71c677882328942e95a
[INFO] running `Command { std: "docker" "start" "-a" "adbda5009f8c979ea16377c56f18d4a5fad0b4b35ef2c71c677882328942e95a", kill_on_drop: false }`
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling 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" "adbda5009f8c979ea16377c56f18d4a5fad0b4b35ef2c71c677882328942e95a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adbda5009f8c979ea16377c56f18d4a5fad0b4b35ef2c71c677882328942e95a", kill_on_drop: false }`
[INFO] [stdout] adbda5009f8c979ea16377c56f18d4a5fad0b4b35ef2c71c677882328942e95a