[INFO] cloning repository https://github.com/dread-deimos/rust-cowbulls-tutorial
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dread-deimos/rust-cowbulls-tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdread-deimos%2Frust-cowbulls-tutorial", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdread-deimos%2Frust-cowbulls-tutorial'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f1b31ab0a2bac7f52eeff550b8c5ff41accbe505
[INFO] checking dread-deimos/rust-cowbulls-tutorial against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdread-deimos%2Frust-cowbulls-tutorial" "/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/dread-deimos/rust-cowbulls-tutorial on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dread-deimos/rust-cowbulls-tutorial
[INFO] finished tweaking git repo https://github.com/dread-deimos/rust-cowbulls-tutorial
[INFO] tweaked toml for git repo https://github.com/dread-deimos/rust-cowbulls-tutorial written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/dread-deimos/rust-cowbulls-tutorial already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] deb29dfbab012e3c635d6a0894436a32f6f4c84075cb5ce7392cd24384ec8619
[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" "deb29dfbab012e3c635d6a0894436a32f6f4c84075cb5ce7392cd24384ec8619", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "deb29dfbab012e3c635d6a0894436a32f6f4c84075cb5ce7392cd24384ec8619", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "deb29dfbab012e3c635d6a0894436a32f6f4c84075cb5ce7392cd24384ec8619", kill_on_drop: false }`
[INFO] [stdout] deb29dfbab012e3c635d6a0894436a32f6f4c84075cb5ce7392cd24384ec8619
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--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] c150552fa3866a3f22712f78d440c04c990550f1c06f68ca8091c6d68bc930ac
[INFO] running `Command { std: "docker" "start" "-a" "c150552fa3866a3f22712f78d440c04c990550f1c06f68ca8091c6d68bc930ac", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.1.8
[INFO] [stderr]     Checking rand v0.3.8
[INFO] [stdout] error[E0277]: the size for values of type `Self` cannot be known at compilation time
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rand-0.3.8/src/distributions/range.rs:83:50
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub struct Range<X> {
[INFO] [stdout]    |                  - required by this bound in `range::Range`
[INFO] [stdout] ...
[INFO] [stdout] 83 |     fn construct_range(low: Self, high: Self) -> Range<Self>;
[INFO] [stdout]    |                                                  ^^^^^^^^^^^ doesn't have a size known at compile-time
[INFO] [stdout]    |
[INFO] [stdout] help: you could relax the implicit `Sized` bound on `X` if it were used through indirection like `&X` or `Box<X>`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rand-0.3.8/src/distributions/range.rs:50:18
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub struct Range<X> {
[INFO] [stdout]    |                  ^ this could be changed to `X: ?Sized`...
[INFO] [stdout] 51 |     low: X,
[INFO] [stdout]    |          - ...if indirection were used here: `Box<X>`
[INFO] [stdout] 52 |     range: X,
[INFO] [stdout]    |            - ...if indirection were used here: `Box<X>`
[INFO] [stdout] 53 |     accept_zone: X
[INFO] [stdout]    |                  - ...if indirection were used here: `Box<X>`
[INFO] [stdout] help: consider further restricting `Self`
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn construct_range(low: Self, high: Self) -> Range<Self> where Self: Sized;
[INFO] [stdout]    |                                                              ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the size for values of type `Self` cannot be known at compilation time
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rand-0.3.8/src/distributions/range.rs:87:32
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub struct Range<X> {
[INFO] [stdout]    |                  - required by this bound in `range::Range`
[INFO] [stdout] ...
[INFO] [stdout] 87 |     fn sample_range<R: Rng>(r: &Range<Self>, rng: &mut R) -> Self;
[INFO] [stdout]    |                                ^^^^^^^^^^^^ doesn't have a size known at compile-time
[INFO] [stdout]    |
[INFO] [stdout] help: you could relax the implicit `Sized` bound on `X` if it were used through indirection like `&X` or `Box<X>`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rand-0.3.8/src/distributions/range.rs:50:18
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub struct Range<X> {
[INFO] [stdout]    |                  ^ this could be changed to `X: ?Sized`...
[INFO] [stdout] 51 |     low: X,
[INFO] [stdout]    |          - ...if indirection were used here: `Box<X>`
[INFO] [stdout] 52 |     range: X,
[INFO] [stdout]    |            - ...if indirection were used here: `Box<X>`
[INFO] [stdout] 53 |     accept_zone: X
[INFO] [stdout]    |                  - ...if indirection were used here: `Box<X>`
[INFO] [stdout] help: consider further restricting `Self`
[INFO] [stdout]    |
[INFO] [stdout] 87 |     fn sample_range<R: Rng>(r: &Range<Self>, rng: &mut R) -> Self where Self: Sized;
[INFO] [stdout]    |                                                                   ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rand` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "c150552fa3866a3f22712f78d440c04c990550f1c06f68ca8091c6d68bc930ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c150552fa3866a3f22712f78d440c04c990550f1c06f68ca8091c6d68bc930ac", kill_on_drop: false }`
[INFO] [stdout] c150552fa3866a3f22712f78d440c04c990550f1c06f68ca8091c6d68bc930ac