[INFO] updating cached repository https://github.com/cswinter/LocustDB
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/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] ec09124d8ed4ca1675aa98888e03325f59f69e3e
[INFO] checking cswinter/LocustDB against try#00e4530a79c42b21a6ca2ac1edb597c90d21f89f for pr-64672
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcswinter%2FLocustDB" "work/builds/worker-7/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cswinter/LocustDB on toolchain 00e4530a79c42b21a6ca2ac1edb597c90d21f89f
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/cswinter/LocustDB
[INFO] removed path dependency locustdb-derive from git repo https://github.com/cswinter/LocustDB
[INFO] finished tweaking git repo https://github.com/cswinter/LocustDB
[INFO] tweaked toml for git repo https://github.com/cswinter/LocustDB written to work/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/cswinter/LocustDB already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /mnt/big/crater/work/builds/worker-7/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 99b7368573c19e8f2f276799df658464a6c998f471c4f6ff332b367c298ffc61
[INFO] running `"docker" "start" "-a" "99b7368573c19e8f2f276799df658464a6c998f471c4f6ff332b367c298ffc61"`
[INFO] [stderr]    Compiling locustdb v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking futures-core v0.2.1
[INFO] [stderr]     Checking itertools v0.5.10
[INFO] [stderr]     Checking lru v0.1.17
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking aliasmethod v0.1.0
[INFO] [stderr] error[E0658]: auto traits are experimental and possibly buggy
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lru-0.1.17/src/lib.rs:110:1
[INFO] [stderr]     |
[INFO] [stderr] 110 | pub auto trait NotKeyRef {}
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/13231
[INFO] [stderr]     = help: add `#![feature(optin_builtin_traits)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: negative trait bounds are not yet fully implemented; use marker types for now
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lru-0.1.17/src/lib.rs:113:9
[INFO] [stderr]     |
[INFO] [stderr] 113 | impl<K> !NotKeyRef for KeyRef<K> {}
[INFO] [stderr]     |         ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: for more information, see https://github.com/rust-lang/rust/issues/13231
[INFO] [stderr]     = help: add `#![feature(optin_builtin_traits)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0658`.
[INFO] [stderr] error: could not compile `lru`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "99b7368573c19e8f2f276799df658464a6c998f471c4f6ff332b367c298ffc61"`
[INFO] running `"docker" "rm" "-f" "99b7368573c19e8f2f276799df658464a6c998f471c4f6ff332b367c298ffc61"`
[INFO] [stdout] 99b7368573c19e8f2f276799df658464a6c998f471c4f6ff332b367c298ffc61