[INFO] fetching crate b_error 0.1.0...
[INFO] testing b_error-0.1.0 against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] extracting crate b_error 0.1.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate b_error 0.1.0 on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c1c44c14b35809e71b7185c6bfb4864d5c26dd1c609d52380f68fab9a2ce09e6
[INFO] running `Command { std: "docker" "start" "-a" "c1c44c14b35809e71b7185c6bfb4864d5c26dd1c609d52380f68fab9a2ce09e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c1c44c14b35809e71b7185c6bfb4864d5c26dd1c609d52380f68fab9a2ce09e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1c44c14b35809e71b7185c6bfb4864d5c26dd1c609d52380f68fab9a2ce09e6", kill_on_drop: false }`
[INFO] [stdout] c1c44c14b35809e71b7185c6bfb4864d5c26dd1c609d52380f68fab9a2ce09e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c8eb572d6b5e8386095447c70bfc496ecb7d2c6e932d5dbe38a08e5d15b38e7
[INFO] running `Command { std: "docker" "start" "-a" "2c8eb572d6b5e8386095447c70bfc496ecb7d2c6e932d5dbe38a08e5d15b38e7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling b_error v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "2c8eb572d6b5e8386095447c70bfc496ecb7d2c6e932d5dbe38a08e5d15b38e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c8eb572d6b5e8386095447c70bfc496ecb7d2c6e932d5dbe38a08e5d15b38e7", kill_on_drop: false }`
[INFO] [stdout] 2c8eb572d6b5e8386095447c70bfc496ecb7d2c6e932d5dbe38a08e5d15b38e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ccfdd2a777b35a1b48da73ebc91d662b73c246db6ea93d726dfcbad35ee6443f
[INFO] running `Command { std: "docker" "start" "-a" "ccfdd2a777b35a1b48da73ebc91d662b73c246db6ea93d726dfcbad35ee6443f", 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` in the current scope
[INFO] [stdout]    --> error.rs:130:19
[INFO] [stdout]     |
[INFO] [stdout] 130 |         ret_s_t().c("test")?;
[INFO] [stdout]     |                   ^ method not found in `Result<(), TestError>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `c` found for enum `Result` in the current scope
[INFO] [stdout]    --> error.rs:131:19
[INFO] [stdout]     |
[INFO] [stdout] 131 |         ret_s_b().c("test")?;
[INFO] [stdout]     |                   ^ method not found in `Result<(), BError>`
[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 `b_error` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "ccfdd2a777b35a1b48da73ebc91d662b73c246db6ea93d726dfcbad35ee6443f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccfdd2a777b35a1b48da73ebc91d662b73c246db6ea93d726dfcbad35ee6443f", kill_on_drop: false }`
[INFO] [stdout] ccfdd2a777b35a1b48da73ebc91d662b73c246db6ea93d726dfcbad35ee6443f