[INFO] updating cached repository tomhoule/rust-experiment
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tomhoule/rust-experiment
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tomhoule/rust-experiment" "work/ex/beta-1.38-1/sources/1.37.0/gh/tomhoule/rust-experiment"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/tomhoule/rust-experiment'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tomhoule/rust-experiment" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/tomhoule/rust-experiment"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/tomhoule/rust-experiment'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4642dd4d9ce839a7684ee986fe6d1d6a4c49a357
[INFO] sha for GitHub repo tomhoule/rust-experiment: 4642dd4d9ce839a7684ee986fe6d1d6a4c49a357
[INFO] validating manifest of tomhoule/rust-experiment on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of tomhoule/rust-experiment on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing tomhoule/rust-experiment
[INFO] finished frobbing tomhoule/rust-experiment
[INFO] frobbed toml for tomhoule/rust-experiment written to work/ex/beta-1.38-1/sources/1.37.0/gh/tomhoule/rust-experiment/Cargo.toml
[INFO] started frobbing tomhoule/rust-experiment
[INFO] finished frobbing tomhoule/rust-experiment
[INFO] frobbed toml for tomhoule/rust-experiment written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/tomhoule/rust-experiment/Cargo.toml
[INFO] crate tomhoule/rust-experiment already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing tomhoule/rust-experiment against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/tomhoule/rust-experiment:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 318319d2bc33bebd5c373087f0caa1c667ce97aeb320b053690d0d172f754567
[INFO] running `"docker" "start" "-a" "318319d2bc33bebd5c373087f0caa1c667ce97aeb320b053690d0d172f754567"`
[INFO] [stderr]    Compiling rustc-serialize v0.3.19
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]    Compiling quote v0.3.4
[INFO] [stderr]    Compiling slog v1.2.1
[INFO] [stderr]    Compiling debugtrace v0.1.0
[INFO] [stderr]    Compiling serde v0.8.16
[INFO] [stderr]    Compiling custom_derive v0.1.5
[INFO] [stderr]    Compiling strsim v0.5.1
[INFO] [stderr] error[E0277]: `*mut (dyn core::ops::Fn() + 'static)` cannot be shared between threads safely
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/slog-1.2.1/src/ser.rs:228:6
[INFO] [stderr]     |
[INFO] [stderr] 228 | impl SyncSerialize for fmt::Arguments<'static> {}
[INFO] [stderr]     |      ^^^^^^^^^^^^^ `*mut (dyn core::ops::Fn() + 'static)` cannot be shared between threads safely
[INFO] [stderr]     |
[INFO] [stderr]     = help: within `core::fmt::Arguments<'static>`, the trait `core::marker::Sync` is not implemented for `*mut (dyn core::ops::Fn() + 'static)`
[INFO] [stderr]     = note: required because it appears within the type `core::marker::PhantomData<*mut (dyn core::ops::Fn() + 'static)>`
[INFO] [stderr]     = note: required because it appears within the type `core::fmt::Void`
[INFO] [stderr]     = note: required because it appears within the type `&'static core::fmt::Void`
[INFO] [stderr]     = note: required because it appears within the type `core::fmt::ArgumentV1<'static>`
[INFO] [stderr]     = note: required because it appears within the type `[core::fmt::ArgumentV1<'static>]`
[INFO] [stderr]     = note: required because it appears within the type `&'static [core::fmt::ArgumentV1<'static>]`
[INFO] [stderr]     = note: required because it appears within the type `core::fmt::Arguments<'static>`
[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 `slog`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0642]: patterns aren't allowed in methods without bodies
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-serialize-0.3.19/src/serialize.rs:147:45
[INFO] [stderr]     |
[INFO] [stderr] 147 |                                             &f_name: &str,
[INFO] [stderr]     |                                             ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0642`.
[INFO] [stderr] error: Could not compile `rustc-serialize`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "318319d2bc33bebd5c373087f0caa1c667ce97aeb320b053690d0d172f754567"`
[INFO] running `"docker" "rm" "-f" "318319d2bc33bebd5c373087f0caa1c667ce97aeb320b053690d0d172f754567"`
[INFO] [stdout] 318319d2bc33bebd5c373087f0caa1c667ce97aeb320b053690d0d172f754567