[INFO] cloning repository https://github.com/pineapplehunter/fractions
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pineapplehunter/fractions" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpineapplehunter%2Ffractions", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpineapplehunter%2Ffractions'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2682a01a6b053edf5f509c7b57edff333b318c3b
[INFO] testing pineapplehunter/fractions against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpineapplehunter%2Ffractions" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pineapplehunter/fractions on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pineapplehunter/fractions
[INFO] finished tweaking git repo https://github.com/pineapplehunter/fractions
[INFO] tweaked toml for git repo https://github.com/pineapplehunter/fractions written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/pineapplehunter/fractions already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "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" "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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 25320207a534b1c39bc20fb22919664bd315ce9388746bf092c87b80342c42c1
[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" "25320207a534b1c39bc20fb22919664bd315ce9388746bf092c87b80342c42c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "25320207a534b1c39bc20fb22919664bd315ce9388746bf092c87b80342c42c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25320207a534b1c39bc20fb22919664bd315ce9388746bf092c87b80342c42c1", kill_on_drop: false }`
[INFO] [stdout] 25320207a534b1c39bc20fb22919664bd315ce9388746bf092c87b80342c42c1
[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" "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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 670d53bef9f151ae4b0318a2b7555d13df06c7336cf156078e33f3b58e313a47
[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" "670d53bef9f151ae4b0318a2b7555d13df06c7336cf156078e33f3b58e313a47", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling fractions v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0210]: type parameter `I` must be covered by another type when it appears before the first local type (`Fraction`)
[INFO] [stdout]   --> src/fraction.rs:24:7
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl <I: IntoInteger> Mul<Fraction> for I{
[INFO] [stdout]    |       ^ type parameter `I` must be covered by another type when it appears before the first local type (`Fraction`)
[INFO] [stdout]    |
[INFO] [stdout]    = note: implementing a foreign trait is only possible if at least one of the types for which it is implemented is local, and no uncovered type parameters appear before that first local type
[INFO] [stdout]    = note: in this case, 'before' refers to the following order: `impl<..> ForeignTrait<T1, ..., Tn> for T0`, where `T0` is the first and `Tn` is the last
[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 E0210`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fractions`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "670d53bef9f151ae4b0318a2b7555d13df06c7336cf156078e33f3b58e313a47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "670d53bef9f151ae4b0318a2b7555d13df06c7336cf156078e33f3b58e313a47", kill_on_drop: false }`
[INFO] [stdout] 670d53bef9f151ae4b0318a2b7555d13df06c7336cf156078e33f3b58e313a47