[INFO] cloning repository https://github.com/Jafagervik/rustpower
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Jafagervik/rustpower" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJafagervik%2Frustpower", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJafagervik%2Frustpower'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] df55c94434a6870a35095d9156b46e254bfe517f
[INFO] checking Jafagervik/rustpower against master#8f359beca4e58bc3ae795a666301a8f47023044c for pr-121545
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJafagervik%2Frustpower" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Jafagervik/rustpower on toolchain 8f359beca4e58bc3ae795a666301a8f47023044c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8f359beca4e58bc3ae795a666301a8f47023044c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Jafagervik/rustpower
[INFO] finished tweaking git repo https://github.com/Jafagervik/rustpower
[INFO] tweaked toml for git repo https://github.com/Jafagervik/rustpower written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Jafagervik/rustpower already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8f359beca4e58bc3ae795a666301a8f47023044c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: package.author
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking Jafagervik/rustpower against try#7ee76453dd3eae6de6c1351f26482bed63b01beb for pr-121545
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJafagervik%2Frustpower" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Jafagervik/rustpower on toolchain 7ee76453dd3eae6de6c1351f26482bed63b01beb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7ee76453dd3eae6de6c1351f26482bed63b01beb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Jafagervik/rustpower
[INFO] finished tweaking git repo https://github.com/Jafagervik/rustpower
[INFO] tweaked toml for git repo https://github.com/Jafagervik/rustpower written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Jafagervik/rustpower already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7ee76453dd3eae6de6c1351f26482bed63b01beb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: package.author
[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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+7ee76453dd3eae6de6c1351f26482bed63b01beb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5cc985202a5726110e3c84fe79b62f4b10984d62102e2481835842b742ce8537
[INFO] running `Command { std: "docker" "start" "-a" "5cc985202a5726110e3c84fe79b62f4b10984d62102e2481835842b742ce8537", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5cc985202a5726110e3c84fe79b62f4b10984d62102e2481835842b742ce8537", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cc985202a5726110e3c84fe79b62f4b10984d62102e2481835842b742ce8537", kill_on_drop: false }`
[INFO] [stdout] 5cc985202a5726110e3c84fe79b62f4b10984d62102e2481835842b742ce8537
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+7ee76453dd3eae6de6c1351f26482bed63b01beb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7dd04a938734998b01989aac5679201aa098adabe9812bd8d2276f42b97d0bf4
[INFO] running `Command { std: "docker" "start" "-a" "7dd04a938734998b01989aac5679201aa098adabe9812bd8d2276f42b97d0bf4", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: package.author
[INFO] [stderr]    Compiling libc v0.2.143
[INFO] [stderr]    Compiling anyhow v1.0.71
[INFO] [stderr]    Compiling serde v1.0.162
[INFO] [stderr]     Checking getrandom v0.2.9
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rustpower v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `rand::rngs`
[INFO] [stdout]  --> src/bin/montecarlo.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::rngs;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0603]: module `rng` is private
[INFO] [stdout]   --> src/main.rs:2:11
[INFO] [stdout]    |
[INFO] [stdout] 2  | use rand::rng;
[INFO] [stdout]    |           ^^^ private module
[INFO] [stdout]    |
[INFO] [stdout] note: the module `rng` is defined here
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/rand-0.8.5/src/lib.rs:99:1
[INFO] [stdout]    |
[INFO] [stdout] 99 | mod rng;
[INFO] [stdout]    | ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::rngs`
[INFO] [stdout]  --> src/bin/montecarlo.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::rngs;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rand` is imported redundantly
[INFO] [stdout]  --> src/bin/matmul.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rand::{self, Rng};
[INFO] [stdout]   |            ^^^^ the item `rand` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0603`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustpower` (bin "rustpower" test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0603]: module `rng` is private
[INFO] [stdout]   --> src/main.rs:2:11
[INFO] [stdout]    |
[INFO] [stdout] 2  | use rand::rng;
[INFO] [stdout]    |           ^^^ private module
[INFO] [stdout]    |
[INFO] [stdout] note: the module `rng` is defined here
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/rand-0.8.5/src/lib.rs:99:1
[INFO] [stdout]    |
[INFO] [stdout] 99 | mod rng;
[INFO] [stdout]    | ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0603`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustpower` (bin "rustpower") due to 2 previous errors
[INFO] [stdout] warning: the item `rand` is imported redundantly
[INFO] [stdout]  --> src/bin/matmul.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rand::{self, Rng};
[INFO] [stdout]   |            ^^^^ the item `rand` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7dd04a938734998b01989aac5679201aa098adabe9812bd8d2276f42b97d0bf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7dd04a938734998b01989aac5679201aa098adabe9812bd8d2276f42b97d0bf4", kill_on_drop: false }`
[INFO] [stdout] 7dd04a938734998b01989aac5679201aa098adabe9812bd8d2276f42b97d0bf4