[INFO] fetching crate strerror 0.6.3...
[INFO] testing strerror-0.6.3 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate strerror 0.6.3 into /workspace/builds/worker-98/source
[INFO] validating manifest of crates.io crate strerror 0.6.3 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate strerror 0.6.3
[INFO] finished tweaking crates.io crate strerror 0.6.3
[INFO] tweaked toml for crates.io crate strerror 0.6.3 written to /workspace/builds/worker-98/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 88a1f3500b11a5d65a49dad4f1e5c344d6d2b7065155d9a8bf0ce9f9ddd03afc
[INFO] running `Command { std: "docker" "start" "-a" "88a1f3500b11a5d65a49dad4f1e5c344d6d2b7065155d9a8bf0ce9f9ddd03afc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "88a1f3500b11a5d65a49dad4f1e5c344d6d2b7065155d9a8bf0ce9f9ddd03afc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88a1f3500b11a5d65a49dad4f1e5c344d6d2b7065155d9a8bf0ce9f9ddd03afc", kill_on_drop: false }`
[INFO] [stdout] 88a1f3500b11a5d65a49dad4f1e5c344d6d2b7065155d9a8bf0ce9f9ddd03afc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-98/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c6dbb7ec0e2fde0cab4eac4746b9d57f8566f6f5e94dfdf08db2eec4f0c7d8b
[INFO] running `Command { std: "docker" "start" "-a" "4c6dbb7ec0e2fde0cab4eac4746b9d57f8566f6f5e94dfdf08db2eec4f0c7d8b", kill_on_drop: false }`
[INFO] [stderr]    Compiling strerror v0.6.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated type alias `std::alloc::LayoutErr`: Name does not follow std convention, use LayoutError
[INFO] [stdout]    --> src/lib.rs:631:24
[INFO] [stdout]     |
[INFO] [stdout] 631 | impl_from!(std::alloc::LayoutErr);
[INFO] [stdout]     |                        ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0495]: cannot infer an appropriate lifetime for borrow expression due to conflicting requirements
[INFO] [stdout]    --> src/lib.rs:369:15
[INFO] [stdout]     |
[INFO] [stdout] 369 |         match &self.next {
[INFO] [stdout]     |               ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: first, the lifetime cannot outlive the anonymous lifetime defined here...
[INFO] [stdout]    --> src/lib.rs:368:13
[INFO] [stdout]     |
[INFO] [stdout] 368 |     fn next(&mut self) -> Option<Self::Item> {
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout] note: ...so that reference does not outlive borrowed content
[INFO] [stdout]    --> src/lib.rs:369:15
[INFO] [stdout]     |
[INFO] [stdout] 369 |         match &self.next {
[INFO] [stdout]     |               ^^^^^^^^^^
[INFO] [stdout] note: but, the lifetime must be valid for the lifetime `'a` as defined here...
[INFO] [stdout]    --> src/lib.rs:365:6
[INFO] [stdout]     |
[INFO] [stdout] 365 | impl<'a> Iterator for Iter<'a> {
[INFO] [stdout]     |      ^^
[INFO] [stdout] note: ...so that the expression is assignable
[INFO] [stdout]    --> src/lib.rs:373:29
[INFO] [stdout]     |
[INFO] [stdout] 373 |                 self.next = e.source();
[INFO] [stdout]     |                             ^^^^^^^^^^
[INFO] [stdout]     = note: expected `Option<&'a (dyn std::error::Error + 'static)>`
[INFO] [stdout]                found `Option<&(dyn std::error::Error + 'static)>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0495`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `strerror` due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "4c6dbb7ec0e2fde0cab4eac4746b9d57f8566f6f5e94dfdf08db2eec4f0c7d8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c6dbb7ec0e2fde0cab4eac4746b9d57f8566f6f5e94dfdf08db2eec4f0c7d8b", kill_on_drop: false }`
[INFO] [stdout] 4c6dbb7ec0e2fde0cab4eac4746b9d57f8566f6f5e94dfdf08db2eec4f0c7d8b