[INFO] cloning repository https://github.com/vinikira/tower_api_test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vinikira/tower_api_test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvinikira%2Ftower_api_test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvinikira%2Ftower_api_test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 10d754341d60051b58e37383e32e355253cc9ecd
[INFO] testing vinikira/tower_api_test against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvinikira%2Ftower_api_test" "/workspace/builds/worker-108/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-108/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vinikira/tower_api_test on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vinikira/tower_api_test
[INFO] finished tweaking git repo https://github.com/vinikira/tower_api_test
[INFO] tweaked toml for git repo https://github.com/vinikira/tower_api_test written to /workspace/builds/worker-108/source/Cargo.toml
[INFO] crate git repo https://github.com/vinikira/tower_api_test already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro-hack-impl v0.4.1
[INFO] [stderr]   Downloaded http v0.1.14
[INFO] [stderr]   Downloaded redox_syscall v0.1.43
[INFO] [stderr]   Downloaded syn v0.15.22
[INFO] [stderr]   Downloaded crossbeam-utils v0.6.2
[INFO] [stderr]   Downloaded sha-1 v0.7.0
[INFO] [stderr]   Downloaded string v0.1.2
[INFO] [stderr]   Downloaded ucd-trie v0.1.1
[INFO] [stderr]   Downloaded hyper v0.12.17
[INFO] [stderr]   Downloaded miniz_oxide v0.2.0
[INFO] [stderr]   Downloaded miniz_oxide_c_api v0.2.0
[INFO] [stderr]   Downloaded tower-web v0.3.3
[INFO] [stderr]   Downloaded h2 v0.1.14
[INFO] [stderr]   Downloaded flate2 v1.0.6
[INFO] [stderr]   Downloaded tower-web-macros v0.3.2
[INFO] [stderr]   Downloaded pest_meta v2.0.3
[INFO] [stderr]   Downloaded pest_generator v2.0.0
[INFO] [stderr]   Downloaded proc-macro-hack v0.4.1
[INFO] [stderr]   Downloaded pest v2.0.2
[INFO] [stderr]   Downloaded pest_derive v2.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-108/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-108/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 31c0c5575267ff47cb0030d6c75e11acd8a991ec6d0462eca3175f287ab76c1e
[INFO] running `Command { std: "docker" "start" "-a" "31c0c5575267ff47cb0030d6c75e11acd8a991ec6d0462eca3175f287ab76c1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "31c0c5575267ff47cb0030d6c75e11acd8a991ec6d0462eca3175f287ab76c1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31c0c5575267ff47cb0030d6c75e11acd8a991ec6d0462eca3175f287ab76c1e", kill_on_drop: false }`
[INFO] [stdout] 31c0c5575267ff47cb0030d6c75e11acd8a991ec6d0462eca3175f287ab76c1e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-108/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-108/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7b0afe884b5f8c64a189116057a7a01f8dc8a8f9f28a0dc39704b9d8eaf53bfc
[INFO] running `Command { std: "docker" "start" "-a" "7b0afe884b5f8c64a189116057a7a01f8dc8a8f9f28a0dc39704b9d8eaf53bfc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling rand_core v0.3.0
[INFO] [stderr]    Compiling futures v0.1.25
[INFO] [stderr]    Compiling byteorder v1.2.7
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling slab v0.4.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling lazycell v1.2.1
[INFO] [stderr]    Compiling itoa v0.4.3
[INFO] [stderr]    Compiling nodrop v0.1.13
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling memoffset v0.2.1
[INFO] [stderr]    Compiling serde v1.0.82
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling ucd-trie v0.1.1
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]    Compiling maplit v1.0.1
[INFO] [stderr]    Compiling cc v1.0.25
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]    Compiling unicode-normalization v0.1.7
[INFO] [stderr]    Compiling crc32fast v1.1.2
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling httparse v1.3.3
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling proc-macro-hack-impl v0.4.1
[INFO] [stderr]    Compiling try-lock v0.2.2
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]    Compiling indexmap v1.0.2
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling string v0.1.2
[INFO] [stderr]    Compiling same-file v1.0.4
[INFO] [stderr]    Compiling dtoa v0.4.3
[INFO] [stderr]    Compiling quick-error v1.2.2
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling arrayvec v0.4.8
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling crossbeam-utils v0.6.2
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling rand_core v0.2.2
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_xorshift v0.1.0
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling walkdir v2.2.7
[INFO] [stderr]    Compiling owning_ref v0.4.0
[INFO] [stderr]    Compiling regex-syntax v0.6.4
[INFO] [stderr]    Compiling smallvec v0.6.7
[INFO] [stderr]    Compiling pest v2.0.2
[INFO] [stderr]    Compiling lock_api v0.1.5
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling proc-macro-hack v0.4.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.6.1
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[INFO] [stderr]    Compiling tokio-executor v0.1.5
[INFO] [stderr]    Compiling want v0.0.6
[INFO] [stderr]    Compiling tower-service v0.1.0
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling miniz-sys v0.1.11
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[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling num_cpus v1.8.0
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[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling pest_meta v2.0.3
[INFO] [stderr]    Compiling tokio-timer v0.2.8
[INFO] [stderr]    Compiling tokio-current-thread v0.1.4
[INFO] [stderr]    Compiling atoi v0.2.3
[INFO] [stderr]    Compiling checked v0.5.0
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]    Compiling serde_json v1.0.33
[INFO] [stderr]    Compiling serde_plain v0.3.0
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.0
[INFO] [stderr]    Compiling rand v0.6.1
[INFO] [stderr]    Compiling bytes v0.4.11
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling syn v0.15.22
[INFO] [stderr]    Compiling futures-cpupool v0.1.8
[INFO] [stderr]    Compiling mio v0.6.16
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling flate2 v1.0.6
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling serde_urlencoded v0.5.4
[INFO] [stderr]    Compiling parking_lot v0.6.4
[INFO] [stderr]    Compiling tokio-io v0.1.10
[INFO] [stderr]    Compiling http v0.1.14
[INFO] [stderr]    Compiling mio-uds v0.6.7
[INFO] [stderr]    Compiling tokio-threadpool v0.1.9
[INFO] [stderr]    Compiling pest_generator v2.0.0
[INFO] [stderr]    Compiling tokio-reactor v0.1.7
[INFO] [stderr]    Compiling tokio-codec v0.1.1
[INFO] [stderr]    Compiling tokio-fs v0.1.4
[INFO] [stderr]    Compiling pest_derive v2.0.1
[INFO] [stderr]    Compiling tokio-tcp v0.1.2
[INFO] [stderr]    Compiling tokio-udp v0.1.3
[INFO] [stderr]    Compiling tokio-uds v0.2.4
[INFO] [stderr]    Compiling tokio v0.1.13
[INFO] [stderr]    Compiling handlebars v1.1.0
[INFO] [stderr]    Compiling h2 v0.1.14
[INFO] [stderr]    Compiling serde_derive v1.0.82
[INFO] [stderr]    Compiling tower-web-macros v0.3.2
[INFO] [stderr]    Compiling hyper v0.12.17
[INFO] [stderr]    Compiling tower-web v0.3.3
[INFO] [stdout] error[E0670]: `async fn` is not permitted in Rust 2015
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tower-web-0.3.3/src/codegen/mod.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 |     async fn map_ok<T, E>(future: T) -> Result<T::Output, E>
[INFO] [stdout]    |     ^^^^^ to use `async fn`, switch to Rust 2018 or later
[INFO] [stdout]    |
[INFO] [stdout]    = help: set `edition = "2021"` in `Cargo.toml`
[INFO] [stdout]    = note: for more on editions, read https://doc.rust-lang.org/edition-guide
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0670`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tower-web` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "7b0afe884b5f8c64a189116057a7a01f8dc8a8f9f28a0dc39704b9d8eaf53bfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b0afe884b5f8c64a189116057a7a01f8dc8a8f9f28a0dc39704b9d8eaf53bfc", kill_on_drop: false }`
[INFO] [stdout] 7b0afe884b5f8c64a189116057a7a01f8dc8a8f9f28a0dc39704b9d8eaf53bfc