[INFO] fetching crate b_error 0.1.0...
[INFO] testing b_error-0.1.0 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate b_error 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate b_error 0.1.0
[INFO] finished tweaking crates.io crate b_error 0.1.0
[INFO] tweaked toml for crates.io crate b_error 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate b_error 0.1.0 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1c1fece8fff65b414c7d2128b98cfb9b3f6b332f10afbf00a57d82fdf0bd31ce
[INFO] running `Command { std: "docker" "start" "-a" "1c1fece8fff65b414c7d2128b98cfb9b3f6b332f10afbf00a57d82fdf0bd31ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c1fece8fff65b414c7d2128b98cfb9b3f6b332f10afbf00a57d82fdf0bd31ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c1fece8fff65b414c7d2128b98cfb9b3f6b332f10afbf00a57d82fdf0bd31ce", kill_on_drop: false }`
[INFO] [stdout] 1c1fece8fff65b414c7d2128b98cfb9b3f6b332f10afbf00a57d82fdf0bd31ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ed09aee26ae85ec1e975396cfaa7cc9bce6b5aebd9159d5522608c46a1c8d8ad
[INFO] running `Command { std: "docker" "start" "-a" "ed09aee26ae85ec1e975396cfaa7cc9bce6b5aebd9159d5522608c46a1c8d8ad", kill_on_drop: false }`
[INFO] [stderr]    Compiling b_error v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "ed09aee26ae85ec1e975396cfaa7cc9bce6b5aebd9159d5522608c46a1c8d8ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed09aee26ae85ec1e975396cfaa7cc9bce6b5aebd9159d5522608c46a1c8d8ad", kill_on_drop: false }`
[INFO] [stdout] ed09aee26ae85ec1e975396cfaa7cc9bce6b5aebd9159d5522608c46a1c8d8ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9105369820654d675159713a2aadc996ac077e9026cbe38dcd4c8259f090e9c
[INFO] running `Command { std: "docker" "start" "-a" "e9105369820654d675159713a2aadc996ac077e9026cbe38dcd4c8259f090e9c", kill_on_drop: false }`
[INFO] [stderr]    Compiling b_error v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `c` found for enum `Result<T, E>` in the current scope
[INFO] [stdout]    --> error.rs:130:19
[INFO] [stdout]     |
[INFO] [stdout] 130 |         ret_s_t().c("test")?;
[INFO] [stdout]     |                   ^
[INFO] [stdout]     |
[INFO] [stdout] help: there is a method `e` with a similar name, but with different arguments
[INFO] [stdout]    --> error.rs:76:5
[INFO] [stdout]     |
[INFO] [stdout]  76 |     fn e(self) -> StdResult<T, BError> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `c` found for enum `Result<T, E>` in the current scope
[INFO] [stdout]    --> error.rs:131:19
[INFO] [stdout]     |
[INFO] [stdout] 131 |         ret_s_b().c("test")?;
[INFO] [stdout]     |                   ^
[INFO] [stdout]     |
[INFO] [stdout] help: there is a method `e` with a similar name, but with different arguments
[INFO] [stdout]    --> error.rs:76:5
[INFO] [stdout]     |
[INFO] [stdout]  76 |     fn e(self) -> StdResult<T, BError> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `b_error` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "e9105369820654d675159713a2aadc996ac077e9026cbe38dcd4c8259f090e9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9105369820654d675159713a2aadc996ac077e9026cbe38dcd4c8259f090e9c", kill_on_drop: false }`
[INFO] [stdout] e9105369820654d675159713a2aadc996ac077e9026cbe38dcd4c8259f090e9c