[INFO] fetching crate snafu 0.7.1...
[INFO] building snafu-0.7.1 against try#615edd3ad1cf6871c977dc900317cb6c2070fd6b for pr-97334
[INFO] extracting crate snafu 0.7.1 into /workspace/builds/worker-23/source
[INFO] validating manifest of crates.io crate snafu 0.7.1 on toolchain 615edd3ad1cf6871c977dc900317cb6c2070fd6b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate snafu 0.7.1
[INFO] finished tweaking crates.io crate snafu 0.7.1
[INFO] tweaked toml for crates.io crate snafu 0.7.1 written to /workspace/builds/worker-23/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "fetch" "--manifest-path" "Cargo.toml", 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d4a542d460582cc2383294f03d220ad182180e8a46ea0330b48b40ec85d545a2
[INFO] running `Command { std: "docker" "start" "-a" "d4a542d460582cc2383294f03d220ad182180e8a46ea0330b48b40ec85d545a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d4a542d460582cc2383294f03d220ad182180e8a46ea0330b48b40ec85d545a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4a542d460582cc2383294f03d220ad182180e8a46ea0330b48b40ec85d545a2", kill_on_drop: false }`
[INFO] [stdout] d4a542d460582cc2383294f03d220ad182180e8a46ea0330b48b40ec85d545a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca5b1f6d31e56f4d37a82501523c4a5bcb4a6e7a1ed4c36636c21ede27898774
[INFO] running `Command { std: "docker" "start" "-a" "ca5b1f6d31e56f4d37a82501523c4a5bcb4a6e7a1ed4c36636c21ede27898774", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.96
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling snafu-derive v0.7.1
[INFO] [stderr]    Compiling snafu v0.7.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.06s
[INFO] running `Command { std: "docker" "inspect" "ca5b1f6d31e56f4d37a82501523c4a5bcb4a6e7a1ed4c36636c21ede27898774", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca5b1f6d31e56f4d37a82501523c4a5bcb4a6e7a1ed4c36636c21ede27898774", kill_on_drop: false }`
[INFO] [stdout] ca5b1f6d31e56f4d37a82501523c4a5bcb4a6e7a1ed4c36636c21ede27898774
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8bd9884dc63ad9cfc7fe6ddd0d02c04d9d8fb2e6d68622eff79dd9dc69734d82
[INFO] running `Command { std: "docker" "start" "-a" "8bd9884dc63ad9cfc7fe6ddd0d02c04d9d8fb2e6d68622eff79dd9dc69734d82", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling snafu v0.7.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.43s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/snafu-f190425fe94ece5d)
[INFO] [stderr]   Executable tests/backtrace.rs (/opt/rustwide/target/debug/deps/backtrace-806a27e9e2400492)
[INFO] [stderr]   Executable tests/backtrace-optional.rs (/opt/rustwide/target/debug/deps/backtrace_optional-3e73d566c4b5f4cd)
[INFO] [stderr]   Executable tests/backtrace-optional-enabled.rs (/opt/rustwide/target/debug/deps/backtrace_optional_enabled-c4701453592e2523)
[INFO] [stderr]   Executable tests/backtrace_attributes.rs (/opt/rustwide/target/debug/deps/backtrace_attributes-bfa9ef545f328273)
[INFO] [stderr]   Executable tests/basic.rs (/opt/rustwide/target/debug/deps/basic-d8df6f0d399c4343)
[INFO] [stderr]   Executable tests/boxed_error_trait_object.rs (/opt/rustwide/target/debug/deps/boxed_error_trait_object-b847d2949177aaa8)
[INFO] [stderr]   Executable tests/build-leaf-error.rs (/opt/rustwide/target/debug/deps/build_leaf_error-7335a9ed10817ab2)
[INFO] [stderr]   Executable tests/context_selector_name.rs (/opt/rustwide/target/debug/deps/context_selector_name-9ac7c41307d0b900)
[INFO] [stderr]   Executable tests/default_error_display.rs (/opt/rustwide/target/debug/deps/default_error_display-15542c2e9be3c0ac)
[INFO] [stderr]   Executable tests/display-shorthand.rs (/opt/rustwide/target/debug/deps/display_shorthand-6112e8738ded480a)
[INFO] [stderr]   Executable tests/doc_comment.rs (/opt/rustwide/target/debug/deps/doc_comment-ff87c30060260212)
[INFO] [stderr]   Executable tests/ensure.rs (/opt/rustwide/target/debug/deps/ensure-f858def9c0dc4824)
[INFO] [stderr]   Executable tests/error_chain.rs (/opt/rustwide/target/debug/deps/error_chain-4380472841320d40)
[INFO] [stderr]   Executable tests/generics.rs (/opt/rustwide/target/debug/deps/generics-bc0de4f3f22f077e)
[INFO] [stderr]   Executable tests/generics_with_default.rs (/opt/rustwide/target/debug/deps/generics_with_default-c219ae18889be0cb)
[INFO] [stderr]   Executable tests/implicit.rs (/opt/rustwide/target/debug/deps/implicit-c15e91ce4d74395a)
[INFO] [stderr]   Executable tests/location.rs (/opt/rustwide/target/debug/deps/location-f3c5a5226583929d)
[INFO] [stderr]   Executable tests/mapping_result_without_try_operator.rs (/opt/rustwide/target/debug/deps/mapping_result_without_try_operator-b7a3788caa804425)
[INFO] [stderr]   Executable tests/module.rs (/opt/rustwide/target/debug/deps/module-f6ecd4fa1e7016ff)
[INFO] [stderr]   Executable tests/multiple_attributes.rs (/opt/rustwide/target/debug/deps/multiple_attributes-c6011de5c60916e7)
[INFO] [stderr]   Executable tests/name-conflicts.rs (/opt/rustwide/target/debug/deps/name_conflicts-3a2afd566dc7ce8e)
[INFO] [stderr]   Executable tests/no_context.rs (/opt/rustwide/target/debug/deps/no_context-19f709f7a5653a84)
[INFO] [stderr]   Executable tests/opaque.rs (/opt/rustwide/target/debug/deps/opaque-ca29c4477beb53db)
[INFO] [stderr]   Executable tests/options.rs (/opt/rustwide/target/debug/deps/options-0641cf88c41980bb)
[INFO] [stderr]   Executable tests/premade_error.rs (/opt/rustwide/target/debug/deps/premade_error-e08f8cd37bdc2cf8)
[INFO] [stderr]   Executable tests/raw_idents.rs (/opt/rustwide/target/debug/deps/raw_idents-3bdb07a63430ff6e)
[INFO] [stderr]   Executable tests/recursive_error.rs (/opt/rustwide/target/debug/deps/recursive_error-eacfc657b45d3f5b)
[INFO] [stderr]   Executable tests/send_between_threads.rs (/opt/rustwide/target/debug/deps/send_between_threads-9df7489276b637b5)
[INFO] [stderr]   Executable tests/single_use_lifetimes_lint.rs (/opt/rustwide/target/debug/deps/single_use_lifetimes_lint-805d0cee73f370eb)
[INFO] [stderr]   Executable tests/source_attributes.rs (/opt/rustwide/target/debug/deps/source_attributes-42f67c4d4737bad9)
[INFO] [stderr]   Executable tests/stringly_typed.rs (/opt/rustwide/target/debug/deps/stringly_typed-274ff593e5ed83ba)
[INFO] [stderr]   Executable tests/structs/main.rs (/opt/rustwide/target/debug/deps/structs-e157090cc3622bde)
[INFO] [stderr]   Executable tests/visibility.rs (/opt/rustwide/target/debug/deps/visibility-7781441c547c2f76)
[INFO] running `Command { std: "docker" "inspect" "8bd9884dc63ad9cfc7fe6ddd0d02c04d9d8fb2e6d68622eff79dd9dc69734d82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bd9884dc63ad9cfc7fe6ddd0d02c04d9d8fb2e6d68622eff79dd9dc69734d82", kill_on_drop: false }`
[INFO] [stdout] 8bd9884dc63ad9cfc7fe6ddd0d02c04d9d8fb2e6d68622eff79dd9dc69734d82