[INFO] updating cached repository https://github.com/pop-os/buildchain
[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] cb48b2fd146e659c502814fa2cd70fdfd105d034
[INFO] checking pop-os/buildchain against beta-2019-10-27 for pr-65897
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpop-os%2Fbuildchain" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pop-os/buildchain on toolchain beta-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/pop-os/buildchain
[INFO] finished tweaking git repo https://github.com/pop-os/buildchain
[INFO] tweaked toml for git repo https://github.com/pop-os/buildchain written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/pop-os/buildchain already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=allow" "-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" "+beta-2019-10-27" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d1e2b01bd5f1fe931788951a600c21bab6f7b5e21bc844d34835d636d0b72cdc
[INFO] running `"docker" "start" "-a" "d1e2b01bd5f1fe931788951a600c21bab6f7b5e21bc844d34835d636d0b72cdc"`
[INFO] [stderr]     Checking index-fixed v0.3.0
[INFO] [stderr]     Checking base32 v0.4.0
[INFO] [stderr]     Checking plain v0.2.3
[INFO] [stderr]    Compiling unicase v2.4.0
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]    Compiling openssl v0.10.24
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]    Compiling native-tls v0.2.3
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking tokio-buf v0.1.1
[INFO] [stderr]     Checking error-chain v0.12.1
[INFO] [stderr]     Checking tokio-threadpool v0.1.15
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking serde_urlencoded v0.5.5
[INFO] [stderr]     Checking lxd v0.1.8
[INFO] [stderr]     Checking sodalite v0.3.0
[INFO] [stderr]     Checking http-body v0.1.0
[INFO] [stderr]     Checking publicsuffix v1.5.3
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]    Compiling mime_guess v2.0.1
[INFO] [stderr]     Checking cookie_store v0.7.0
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking hyper v0.12.33
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]     Checking reqwest v0.9.20
[INFO] [stderr]     Checking buildchain v0.4.10 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0599]: no method named `fill_bytes` found for type `rand::OsRng` in the current scope
[INFO] [stderr]    --> src/store.rs:318:17
[INFO] [stderr]     |
[INFO] [stderr] 318 |             rng.fill_bytes(&mut content);
[INFO] [stderr]     |                 ^^^^^^^^^^ method not found in `rand::OsRng`
[INFO] [stderr]     |
[INFO] [stderr]     = help: items from traits can only be used if the trait is in scope
[INFO] [stderr]     = note: the following trait is implemented but not in scope, perhaps add a `use` for it:
[INFO] [stderr]             `use rand::RngCore;`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `fill_bytes` found for type `rand::OsRng` in the current scope
[INFO] [stderr]    --> src/store.rs:362:17
[INFO] [stderr]     |
[INFO] [stderr] 362 |             rng.fill_bytes(&mut content);
[INFO] [stderr]     |                 ^^^^^^^^^^ method not found in `rand::OsRng`
[INFO] [stderr]     |
[INFO] [stderr]     = help: items from traits can only be used if the trait is in scope
[INFO] [stderr]     = note: the following trait is implemented but not in scope, perhaps add a `use` for it:
[INFO] [stderr]             `use rand::RngCore;`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `fill_bytes` found for type `rand::OsRng` in the current scope
[INFO] [stderr]    --> src/store.rs:396:17
[INFO] [stderr]     |
[INFO] [stderr] 396 |             rng.fill_bytes(&mut block);
[INFO] [stderr]     |                 ^^^^^^^^^^ method not found in `rand::OsRng`
[INFO] [stderr]     |
[INFO] [stderr]     = help: items from traits can only be used if the trait is in scope
[INFO] [stderr]     = note: the following trait is implemented but not in scope, perhaps add a `use` for it:
[INFO] [stderr]             `use rand::RngCore;`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `fill_bytes` found for type `rand::OsRng` in the current scope
[INFO] [stderr]    --> src/store.rs:432:17
[INFO] [stderr]     |
[INFO] [stderr] 432 |             rng.fill_bytes(&mut block);
[INFO] [stderr]     |                 ^^^^^^^^^^ method not found in `rand::OsRng`
[INFO] [stderr]     |
[INFO] [stderr]     = help: items from traits can only be used if the trait is in scope
[INFO] [stderr]     = note: the following trait is implemented but not in scope, perhaps add a `use` for it:
[INFO] [stderr]             `use rand::RngCore;`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: could not compile `buildchain`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "d1e2b01bd5f1fe931788951a600c21bab6f7b5e21bc844d34835d636d0b72cdc"`
[INFO] running `"docker" "rm" "-f" "d1e2b01bd5f1fe931788951a600c21bab6f7b5e21bc844d34835d636d0b72cdc"`
[INFO] [stdout] d1e2b01bd5f1fe931788951a600c21bab6f7b5e21bc844d34835d636d0b72cdc