[INFO] cloning repository https://github.com/evanisko/2048
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/evanisko/2048" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fevanisko%2F2048", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fevanisko%2F2048'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 14838bbe0c8215a0ef331c4eb719d009a0b29647
[INFO] documenting evanisko/2048 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fevanisko%2F2048" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/evanisko/2048 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/evanisko/2048
[INFO] finished tweaking git repo https://github.com/evanisko/2048
[INFO] tweaked toml for git repo https://github.com/evanisko/2048 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/evanisko/2048 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-2/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[INFO] the lockfile is outdated, regenerating it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 `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://bitbucket.org/AdrienChampion/rust_2048.git`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a70c251fb2ed5113bb9e6650baa332a0aa496009075c4d2fcf054534519b8e10
[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" "a70c251fb2ed5113bb9e6650baa332a0aa496009075c4d2fcf054534519b8e10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a70c251fb2ed5113bb9e6650baa332a0aa496009075c4d2fcf054534519b8e10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a70c251fb2ed5113bb9e6650baa332a0aa496009075c4d2fcf054534519b8e10", kill_on_drop: false }`
[INFO] [stdout] a70c251fb2ed5113bb9e6650baa332a0aa496009075c4d2fcf054534519b8e10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "RUSTDOCFLAGS=--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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 057460b5909d4680673b1a33925ec518976721b4518ba691a1ff6cc2174bce24
[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" "057460b5909d4680673b1a33925ec518976721b4518ba691a1ff6cc2174bce24", kill_on_drop: false }`
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking lib_2048 v0.1.0 (https://bitbucket.org/AdrienChampion/rust_2048.git?rev=4751eb6#4751eb6b)
[INFO] [stdout] error[E0432]: unresolved import `rand::IsaacRng`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/git/checkouts/rust_2048-e4b2572afb50011c/4751eb6/src/common.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use rand::IsaacRng ;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^ no `IsaacRng` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `rand::Rand`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/rust_2048-e4b2572afb50011c/4751eb6/src/common.rs:108:13
[INFO] [stdout]     |
[INFO] [stdout] 108 |         use rand::Rand ;
[INFO] [stdout]     |             ^^^^^^^^^^ no `Rand` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `rand::IsaacRng`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/git/checkouts/rust_2048-e4b2572afb50011c/4751eb6/src/grid.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rand::IsaacRng ;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^ no `IsaacRng` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `rand::Rand`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/rust_2048-e4b2572afb50011c/4751eb6/src/grid.rs:243:9
[INFO] [stdout]     |
[INFO] [stdout] 243 |     use rand::Rand ;
[INFO] [stdout]     |         ^^^^^^^^^^ no `Rand` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `StdRng` in `rand`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/rust_2048-e4b2572afb50011c/4751eb6/src/common.rs:106:17
[INFO] [stdout]     |
[INFO] [stdout] 106 |     match rand::StdRng::new() {
[INFO] [stdout]     |                 ^^^^^^ not found in `rand`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 3   | use rand::rngs::StdRng;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `rand` found for type `u8` in the current scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/rust_2048-e4b2572afb50011c/4751eb6/src/common.rs:112:26
[INFO] [stdout]     |
[INFO] [stdout] 112 |           let val = (u8::rand(& mut rng) % 26) + 97 ;
[INFO] [stdout]     |                          ^^^^ function or associated item not found in `u8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `rand` found for type `u8` in the current scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/rust_2048-e4b2572afb50011c/4751eb6/src/grid.rs:246:34
[INFO] [stdout]     |
[INFO] [stdout] 246 |       let (row, col) = free[(u8::rand(& mut self.rng) as usize) % free.len()] ;
[INFO] [stdout]     |                                  ^^^^ function or associated item not found in `u8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `rand` found for type `u8` in the current scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/rust_2048-e4b2572afb50011c/4751eb6/src/grid.rs:247:24
[INFO] [stdout]     |
[INFO] [stdout] 247 |       let pow = if u8::rand(& mut self.rng) % 100u8 > 80u8 {
[INFO] [stdout]     |                        ^^^^ function or associated item not found in `u8`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 8 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lib_2048`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "057460b5909d4680673b1a33925ec518976721b4518ba691a1ff6cc2174bce24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "057460b5909d4680673b1a33925ec518976721b4518ba691a1ff6cc2174bce24", kill_on_drop: false }`
[INFO] [stdout] 057460b5909d4680673b1a33925ec518976721b4518ba691a1ff6cc2174bce24
