[INFO] crate mustache_view 0.1.0 is already in cache
[INFO] testing mustache_view-0.1.0 against 1.45.2 for beta-1.46-1
[INFO] extracting crate mustache_view 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate mustache_view 0.1.0 on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mustache_view 0.1.0
[INFO] finished tweaking crates.io crate mustache_view 0.1.0
[INFO] tweaked toml for crates.io crate mustache_view 0.1.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] efa2bd8d62df5be84f62758b9558d1d84f1d41b1ad1fff1064ffdb021be2337c
[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" "efa2bd8d62df5be84f62758b9558d1d84f1d41b1ad1fff1064ffdb021be2337c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "efa2bd8d62df5be84f62758b9558d1d84f1d41b1ad1fff1064ffdb021be2337c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efa2bd8d62df5be84f62758b9558d1d84f1d41b1ad1fff1064ffdb021be2337c", kill_on_drop: false }`
[INFO] [stdout] efa2bd8d62df5be84f62758b9558d1d84f1d41b1ad1fff1064ffdb021be2337c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d1b63703ba4dc9c01df5f2a99636b1908cea59d8ff591bebb963b106fcb30646
[INFO] running `Command { std: "docker" "start" "-a" "d1b63703ba4dc9c01df5f2a99636b1908cea59d8ff591bebb963b106fcb30646", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling mustache v0.9.0
[INFO] [stderr]    Compiling mustache_view v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]  --> src/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::Write;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `T: serde::ser::Serialize` is not satisfied
[INFO] [stdout]   --> src/lib.rs:16:46
[INFO] [stdout]    |
[INFO] [stdout] 16 |                 template.render(&mut output, &data).unwrap();
[INFO] [stdout]    |                                              ^^^^^ the trait `serde::ser::Serialize` is not implemented for `T`
[INFO] [stdout]    |
[INFO] [stdout] help: consider further restricting this bound
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn render<T: Encodable + serde::ser::Serialize> (pathstr: &str, data: T) -> Vec<u8> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mustache_view`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "d1b63703ba4dc9c01df5f2a99636b1908cea59d8ff591bebb963b106fcb30646", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1b63703ba4dc9c01df5f2a99636b1908cea59d8ff591bebb963b106fcb30646", kill_on_drop: false }`
[INFO] [stdout] d1b63703ba4dc9c01df5f2a99636b1908cea59d8ff591bebb963b106fcb30646