[INFO] cloning repository https://github.com/arjsin/tower-web-fileserving
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/arjsin/tower-web-fileserving" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farjsin%2Ftower-web-fileserving", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farjsin%2Ftower-web-fileserving'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cdcfbb6fe15cdcc96f3e48eee85ea6e8a972e8b8
[INFO] building arjsin/tower-web-fileserving against master#881c1ac408d93bb7adaa3a51dabab9266e82eee8 for issue-85264
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farjsin%2Ftower-web-fileserving" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/arjsin/tower-web-fileserving on toolchain 881c1ac408d93bb7adaa3a51dabab9266e82eee8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/arjsin/tower-web-fileserving
[INFO] finished tweaking git repo https://github.com/arjsin/tower-web-fileserving
[INFO] tweaked toml for git repo https://github.com/arjsin/tower-web-fileserving written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/arjsin/tower-web-fileserving already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 71d34ee5e4f466b1a0b0c3d52b138e3c7a2e7e879a6b545e4e7339b1b27b383b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "71d34ee5e4f466b1a0b0c3d52b138e3c7a2e7e879a6b545e4e7339b1b27b383b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "71d34ee5e4f466b1a0b0c3d52b138e3c7a2e7e879a6b545e4e7339b1b27b383b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71d34ee5e4f466b1a0b0c3d52b138e3c7a2e7e879a6b545e4e7339b1b27b383b", kill_on_drop: false }`
[INFO] [stdout] 71d34ee5e4f466b1a0b0c3d52b138e3c7a2e7e879a6b545e4e7339b1b27b383b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=forbid" "-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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+881c1ac408d93bb7adaa3a51dabab9266e82eee8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 57ee7137460f2a0872379d37c8cc12737f6bb5978db32f3dad9f90ee7ae5874f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "57ee7137460f2a0872379d37c8cc12737f6bb5978db32f3dad9f90ee7ae5874f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.48
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[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling matches v0.1.8
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[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling atoi v0.2.3
[INFO] [stderr]    Compiling checked v0.5.0
[INFO] [stderr]    Compiling tokio-executor v0.1.6
[INFO] [stderr]    Compiling proc-macro-hack v0.4.1
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[INFO] [stderr]    Compiling tokio-current-thread v0.1.4
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[INFO] [stderr]    Compiling http v0.1.15
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[INFO] [stderr]    Compiling pest_derive v1.0.8
[INFO] [stderr]    Compiling mio-uds v0.6.7
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]    Compiling tokio-codec v0.1.1
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling parking_lot v0.7.1
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling webpki v0.18.1
[INFO] [stderr]    Compiling sct v0.4.0
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.6
[INFO] [stderr]    Compiling tokio-reactor v0.1.8
[INFO] [stderr]    Compiling crossbeam v0.6.0
[INFO] [stderr]    Compiling rustls v0.14.0
[INFO] [stderr]    Compiling tokio-threadpool v0.1.11
[INFO] [stderr]    Compiling tokio-udp v0.1.3
[INFO] [stderr]    Compiling tokio-tcp v0.1.3
[INFO] [stderr]    Compiling tokio-uds v0.2.5
[INFO] [stderr]    Compiling serde_json v1.0.38
[INFO] [stderr]    Compiling serde_plain v0.3.0
[INFO] [stderr]    Compiling serde_urlencoded v0.5.4
[INFO] [stderr]    Compiling h2 v0.1.16
[INFO] [stderr]    Compiling headers-core v0.1.0
[INFO] [stderr]    Compiling tokio-fs v0.1.5
[INFO] [stderr]    Compiling tokio v0.1.15
[INFO] [stderr]    Compiling handlebars v1.0.5
[INFO] [stderr]    Compiling tokio-rustls v0.8.1
[INFO] [stderr]    Compiling hyper v0.12.23
[INFO] [stderr]    Compiling headers-derive v0.1.0
[INFO] [stderr]    Compiling tower-web-macros v0.3.3
[INFO] [stderr]    Compiling serde_derive v1.0.86
[INFO] [stderr]    Compiling headers v0.2.1
[INFO] [stderr]    Compiling tower-web v0.3.4
[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-0.3.4/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 = "2018"` 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`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "57ee7137460f2a0872379d37c8cc12737f6bb5978db32f3dad9f90ee7ae5874f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57ee7137460f2a0872379d37c8cc12737f6bb5978db32f3dad9f90ee7ae5874f", kill_on_drop: false }`
[INFO] [stdout] 57ee7137460f2a0872379d37c8cc12737f6bb5978db32f3dad9f90ee7ae5874f
