[INFO] updating cached repository https://github.com/davidbarsky/tracing-reproduction
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3663f47b17bf5c9f02a73fec6bf623ff562d35bd
[INFO] checking davidbarsky/tracing-reproduction against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidbarsky%2Ftracing-reproduction" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/davidbarsky/tracing-reproduction on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/davidbarsky/tracing-reproduction
[INFO] finished tweaking git repo https://github.com/davidbarsky/tracing-reproduction
[INFO] tweaked toml for git repo https://github.com/davidbarsky/tracing-reproduction written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/davidbarsky/tracing-reproduction already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5b43e56bbc6124ebd7bcf1e45caf0d50552c4d8f82857b396ee708bf79ce419e
[INFO] running `"docker" "start" "-a" "5b43e56bbc6124ebd7bcf1e45caf0d50552c4d8f82857b396ee708bf79ce419e"`
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]     Checking tracing-core v0.1.7
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling tracing-attributes v0.1.5
[INFO] [stderr]     Checking tracing v0.1.10
[INFO] [stderr]     Checking tracing-reproduction v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0277]: the trait bound `std::option::Option<&'a tracing_core::span::Id>: std::convert::From<std::option::Option<tracing_core::span::Id>>` is not satisfied
[INFO] [stderr]  --> src/main.rs:6:10
[INFO] [stderr]   |
[INFO] [stderr] 6 |     span.follows_from(curr.id());
[INFO] [stderr]   |          ^^^^^^^^^^^^ the trait `std::convert::From<std::option::Option<tracing_core::span::Id>>` is not implemented for `std::option::Option<&'a tracing_core::span::Id>`
[INFO] [stderr]   |
[INFO] [stderr]   = help: the following implementations were found:
[INFO] [stderr]             <std::option::Option<&'a T> as std::convert::From<&'a std::option::Option<T>>>
[INFO] [stderr]             <std::option::Option<&'a mut T> as std::convert::From<&'a mut std::option::Option<T>>>
[INFO] [stderr]             <std::option::Option<T> as std::convert::From<T>>
[INFO] [stderr]   = note: required because of the requirements on the impl of `for<'a> std::convert::Into<std::option::Option<&'a tracing_core::span::Id>>` for `std::option::Option<tracing_core::span::Id>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0277`.
[INFO] [stderr] error: could not compile `tracing-reproduction`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0277]: the trait bound `std::option::Option<&'a tracing_core::span::Id>: std::convert::From<std::option::Option<tracing_core::span::Id>>` is not satisfied
[INFO] [stderr]  --> src/main.rs:6:10
[INFO] [stderr]   |
[INFO] [stderr] 6 |     span.follows_from(curr.id());
[INFO] [stderr]   |          ^^^^^^^^^^^^ the trait `std::convert::From<std::option::Option<tracing_core::span::Id>>` is not implemented for `std::option::Option<&'a tracing_core::span::Id>`
[INFO] [stderr]   |
[INFO] [stderr]   = help: the following implementations were found:
[INFO] [stderr]             <std::option::Option<&'a T> as std::convert::From<&'a std::option::Option<T>>>
[INFO] [stderr]             <std::option::Option<&'a mut T> as std::convert::From<&'a mut std::option::Option<T>>>
[INFO] [stderr]             <std::option::Option<T> as std::convert::From<T>>
[INFO] [stderr]   = note: required because of the requirements on the impl of `for<'a> std::convert::Into<std::option::Option<&'a tracing_core::span::Id>>` for `std::option::Option<tracing_core::span::Id>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0277`.
[INFO] [stderr] error: could not compile `tracing-reproduction`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "5b43e56bbc6124ebd7bcf1e45caf0d50552c4d8f82857b396ee708bf79ce419e"`
[INFO] running `"docker" "rm" "-f" "5b43e56bbc6124ebd7bcf1e45caf0d50552c4d8f82857b396ee708bf79ce419e"`
[INFO] [stdout] 5b43e56bbc6124ebd7bcf1e45caf0d50552c4d8f82857b396ee708bf79ce419e
