[INFO] updating cached repository https://github.com/cwbriones/markov_rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e7ac6d671a0bc6d3862e148db4efc7727f222a15
[INFO] checking cwbriones/markov_rs against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcwbriones%2Fmarkov_rs" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cwbriones/markov_rs on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/cwbriones/markov_rs
[INFO] finished tweaking git repo https://github.com/cwbriones/markov_rs
[INFO] tweaked toml for git repo https://github.com/cwbriones/markov_rs written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/cwbriones/markov_rs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-14/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=forbid" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 7e445335e3fb3bf7d4a00e194459454933b531b0650ce322a14256530a5add06
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "7e445335e3fb3bf7d4a00e194459454933b531b0650ce322a14256530a5add06"`
[INFO] [stderr]     Checking markov_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0432]: unresolved import `rand::Closed01`
[INFO] [stderr]   --> src/main.rs:85:9
[INFO] [stderr]    |
[INFO] [stderr] 85 |     use rand::Closed01;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^ no `Closed01` in the root
[INFO] [stderr] 
[INFO] [stderr] error[E0432]: unresolved import `rand::Closed01`
[INFO] [stderr]   --> src/main.rs:85:9
[INFO] [stderr]    |
[INFO] [stderr] 85 |     use rand::Closed01;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^ no `Closed01` in the root
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `choose` found for mutable reference `&mut R` in the current scope
[INFO] [stderr]   --> src/main.rs:75:26
[INFO] [stderr]    |
[INFO] [stderr] 75 |         let window = rng.choose(&windows).map(|w| *w).unwrap();
[INFO] [stderr]    |                          ^^^^^^ method not found in `&mut R`
[INFO] [stderr]    |
[INFO] [stderr]    = help: items from traits can only be used if the type parameter is bounded by the trait
[INFO] [stderr] help: the following traits define an item `choose`, perhaps you need to restrict type parameter `R` with one of them:
[INFO] [stderr]    |
[INFO] [stderr] 73 |     fn choose_seed<R: rand::prelude::SliceRandom + Rng>(&self, rng: &mut R) -> Vec<&str> {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 73 |     fn choose_seed<R: rand::prelude::IteratorRandom + Rng>(&self, rng: &mut R) -> Vec<&str> {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `markov_rust`.
[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[E0599]: no method named `choose` found for mutable reference `&mut R` in the current scope
[INFO] [stderr]   --> src/main.rs:75:26
[INFO] [stderr]    |
[INFO] [stderr] 75 |         let window = rng.choose(&windows).map(|w| *w).unwrap();
[INFO] [stderr]    |                          ^^^^^^ method not found in `&mut R`
[INFO] [stderr]    |
[INFO] [stderr]    = help: items from traits can only be used if the type parameter is bounded by the trait
[INFO] [stderr] help: the following traits define an item `choose`, perhaps you need to restrict type parameter `R` with one of them:
[INFO] [stderr]    |
[INFO] [stderr] 73 |     fn choose_seed<R: rand::prelude::SliceRandom + Rng>(&self, rng: &mut R) -> Vec<&str> {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 73 |     fn choose_seed<R: rand::prelude::IteratorRandom + Rng>(&self, rng: &mut R) -> Vec<&str> {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `markov_rust`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "7e445335e3fb3bf7d4a00e194459454933b531b0650ce322a14256530a5add06"`
[INFO] running `"docker" "rm" "-f" "7e445335e3fb3bf7d4a00e194459454933b531b0650ce322a14256530a5add06"`
[INFO] [stdout] 7e445335e3fb3bf7d4a00e194459454933b531b0650ce322a14256530a5add06
