[INFO] updating cached repository https://github.com/martskins/tide-workshop
[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] 52f557c169d20c9c81502a7303548dfbfd5facbf
[INFO] checking martskins/tide-workshop against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmartskins%2Ftide-workshop" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/martskins/tide-workshop on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/martskins/tide-workshop
[INFO] finished tweaking git repo https://github.com/martskins/tide-workshop
[INFO] tweaked toml for git repo https://github.com/martskins/tide-workshop written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/martskins/tide-workshop already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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] 727973bf1499b724b62b2b539a074fb29f85b72aba8a746d142e8c80dbf62ed7
[INFO] running `"docker" "start" "-a" "727973bf1499b724b62b2b539a074fb29f85b72aba8a746d142e8c80dbf62ed7"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v0.15.40
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.17
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]     Checking buf_redux v0.8.2
[INFO] [stderr]     Checking http v0.1.17
[INFO] [stderr]     Checking tokio-threadpool v0.1.15
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking scheduled-thread-pool v0.2.2
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.17
[INFO] [stderr]     Checking r2d2 v0.8.5
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.17
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.17
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]     Checking h2 v0.1.25
[INFO] [stderr]     Checking http-body v0.1.0
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling mime_guess v1.8.7
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.17
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.17
[INFO] [stderr]     Checking http-service v0.2.0 (https://github.com/rustasync/http-service#736be519)
[INFO] [stderr]     Checking hyper v0.12.33
[INFO] [stderr]     Checking multipart v0.16.1
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]     Checking http-service-hyper v0.2.0 (https://github.com/rustasync/http-service#736be519)
[INFO] [stderr]    Compiling serde_derive v1.0.97
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling diesel_derives v1.4.0
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking dotenv v0.14.1
[INFO] [stderr]     Checking serde v1.0.97
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking serde_urlencoded v0.5.5
[INFO] [stderr]     Checking chrono v0.4.7
[INFO] [stderr]     Checking diesel v1.4.2
[INFO] [stderr]     Checking tide-core v0.2.0 (https://github.com/rustasync/tide#9a9b10a6)
[INFO] [stderr] error[E0557]: feature has been removed
[INFO] [stderr]  --> /opt/rustwide/cargo-home/git/checkouts/tide-d8df193c9a60972c/9a9b10a/tide-core/src/lib.rs:3:25
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(async_await, existential_type)]
[INFO] [stderr]   |                         ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] note: removed in favor of `#![feature(type_alias_impl_trait)]`
[INFO] [stderr]  --> /opt/rustwide/cargo-home/git/checkouts/tide-d8df193c9a60972c/9a9b10a/tide-core/src/lib.rs:3:25
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(async_await, existential_type)]
[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 E0557`.
[INFO] [stderr] error: could not compile `tide-core`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "727973bf1499b724b62b2b539a074fb29f85b72aba8a746d142e8c80dbf62ed7"`
[INFO] running `"docker" "rm" "-f" "727973bf1499b724b62b2b539a074fb29f85b72aba8a746d142e8c80dbf62ed7"`
[INFO] [stdout] 727973bf1499b724b62b2b539a074fb29f85b72aba8a746d142e8c80dbf62ed7