[INFO] cloning repository https://github.com/performance/enum_hall
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/performance/enum_hall" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperformance%2Fenum_hall", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperformance%2Fenum_hall'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 92a1d9b240fb5b4899db5644a3a0010441c0821f
[INFO] checking performance/enum_hall against master#af3c6e733a40e671550e0f0f5aeecaa13772ba56 for pr-74989
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperformance%2Fenum_hall" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] [stderr] Checking out files: 100% (37/37)   
Checking out files: 100% (37/37), done.
[INFO] validating manifest of git repo https://github.com/performance/enum_hall on toolchain af3c6e733a40e671550e0f0f5aeecaa13772ba56
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/performance/enum_hall
[INFO] finished tweaking git repo https://github.com/performance/enum_hall
[INFO] tweaked toml for git repo https://github.com/performance/enum_hall written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/performance/enum_hall already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-13/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[INFO] the lockfile is outdated, regenerating it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" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "metadata" "--no-deps" "--format-version=1", 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] e14e0dcb8bebe4204eb25cd8bd98de742d005c998f8caa3f95f8274bfa731931
[INFO] running `Command { std: "docker" "start" "-a" "e14e0dcb8bebe4204eb25cd8bd98de742d005c998f8caa3f95f8274bfa731931", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e14e0dcb8bebe4204eb25cd8bd98de742d005c998f8caa3f95f8274bfa731931", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e14e0dcb8bebe4204eb25cd8bd98de742d005c998f8caa3f95f8274bfa731931", kill_on_drop: false }`
[INFO] [stdout] e14e0dcb8bebe4204eb25cd8bd98de742d005c998f8caa3f95f8274bfa731931
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 573cf8b82befd88afe9be7c7a6a6e372ba0d72134727c471628e523b4c219a6d
[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" "573cf8b82befd88afe9be7c7a6a6e372ba0d72134727c471628e523b4c219a6d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]     Checking enum_derive v0.1.7
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking enum_hall v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0425]: cannot find function `sample` in crate `rand`
[INFO] [stdout]   --> src/main.rs:22:44
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let car_choice    : DoorChoice = rand::sample( rng, door_choices.into_iter(), 1)[0].clone();
[INFO] [stdout]    |                                            ^^^^^^ not found in `rand`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]    |
[INFO] [stdout] 6  | use rand::seq::index::sample;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `sample` in crate `rand`
[INFO] [stdout]   --> src/main.rs:23:44
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let player_choice : DoorChoice = rand::sample( rng, door_choices.into_iter(), 1)[0].clone();
[INFO] [stdout]    |                                            ^^^^^^ not found in `rand`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]    |
[INFO] [stdout] 6  | use rand::seq::index::sample;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `sample` in crate `rand`
[INFO] [stdout]   --> src/main.rs:42:11
[INFO] [stdout]    |
[INFO] [stdout] 42 |     rand::sample(rng, choices.into_iter(), 1)[0].clone()
[INFO] [stdout]    |           ^^^^^^ not found in `rand`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]    |
[INFO] [stdout] 6  | use rand::seq::index::sample;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `sample` in crate `rand`
[INFO] [stdout]   --> src/main.rs:22:44
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let car_choice    : DoorChoice = rand::sample( rng, door_choices.into_iter(), 1)[0].clone();
[INFO] [stdout]    |                                            ^^^^^^ not found in `rand`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]    |
[INFO] [stdout] 6  | use rand::seq::index::sample;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `sample` in crate `rand`
[INFO] [stdout]   --> src/main.rs:23:44
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let player_choice : DoorChoice = rand::sample( rng, door_choices.into_iter(), 1)[0].clone();
[INFO] [stdout]    |                                            ^^^^^^ not found in `rand`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]    |
[INFO] [stdout] 6  | use rand::seq::index::sample;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `sample` in crate `rand`
[INFO] [stdout]   --> src/main.rs:42:11
[INFO] [stdout]    |
[INFO] [stdout] 42 |     rand::sample(rng, choices.into_iter(), 1)[0].clone()
[INFO] [stdout]    |           ^^^^^^ not found in `rand`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]    |
[INFO] [stdout] 6  | use rand::seq::index::sample;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `enum_hall`.
[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] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "573cf8b82befd88afe9be7c7a6a6e372ba0d72134727c471628e523b4c219a6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "573cf8b82befd88afe9be7c7a6a6e372ba0d72134727c471628e523b4c219a6d", kill_on_drop: false }`
[INFO] [stdout] 573cf8b82befd88afe9be7c7a6a6e372ba0d72134727c471628e523b4c219a6d
