[INFO] cloning repository https://github.com/h2oche/fun-with-semirings
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/h2oche/fun-with-semirings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fh2oche%2Ffun-with-semirings", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fh2oche%2Ffun-with-semirings'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a801df28762acc2906b1337cb8df6a8f957095e1
[INFO] checking h2oche/fun-with-semirings against try#1779a8680dcd39c56ed600627cf6742ef07ed78c for pr-149045
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fh2oche%2Ffun-with-semirings" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/h2oche/fun-with-semirings
[INFO] finished tweaking git repo https://github.com/h2oche/fun-with-semirings
[INFO] tweaked toml for git repo https://github.com/h2oche/fun-with-semirings written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/h2oche/fun-with-semirings on toolchain 1779a8680dcd39c56ed600627cf6742ef07ed78c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1779a8680dcd39c56ed600627cf6742ef07ed78c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/h2oche/fun-with-semirings 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" "+1779a8680dcd39c56ed600627cf6742ef07ed78c" "fetch" "--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
[ERROR] error running command: no output for 300 seconds
[INFO] checking h2oche/fun-with-semirings against try#1779a8680dcd39c56ed600627cf6742ef07ed78c for pr-149045
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fh2oche%2Ffun-with-semirings" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/h2oche/fun-with-semirings
[INFO] finished tweaking git repo https://github.com/h2oche/fun-with-semirings
[INFO] tweaked toml for git repo https://github.com/h2oche/fun-with-semirings written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/h2oche/fun-with-semirings on toolchain 1779a8680dcd39c56ed600627cf6742ef07ed78c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1779a8680dcd39c56ed600627cf6742ef07ed78c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/h2oche/fun-with-semirings 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" "+1779a8680dcd39c56ed600627cf6742ef07ed78c" "fetch" "--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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1779a8680dcd39c56ed600627cf6742ef07ed78c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b3a74b853e7f4dde6d01751a4b5015e5a477c6ad635b35c1276df9b26b36831c
[INFO] running `Command { std: "docker" "start" "-a" "b3a74b853e7f4dde6d01751a4b5015e5a477c6ad635b35c1276df9b26b36831c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b3a74b853e7f4dde6d01751a4b5015e5a477c6ad635b35c1276df9b26b36831c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3a74b853e7f4dde6d01751a4b5015e5a477c6ad635b35c1276df9b26b36831c", kill_on_drop: false }`
[INFO] [stdout] b3a74b853e7f4dde6d01751a4b5015e5a477c6ad635b35c1276df9b26b36831c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1779a8680dcd39c56ed600627cf6742ef07ed78c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c9354844b476aded3e5b01f530006ffcc28082339a98e1347896899ba8f8f907
[INFO] running `Command { std: "docker" "start" "-a" "c9354844b476aded3e5b01f530006ffcc28082339a98e1347896899ba8f8f907", kill_on_drop: false }`
[INFO] [stderr]     Checking fun-with-semirings v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `s` is never used
[INFO] [stdout]    --> src/main.rs:144:8
[INFO] [stdout]     |
[INFO] [stdout] 144 |     fn s(n: usize) -> Dom {
[INFO] [stdout]     |        ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout]  7 | fn main() {
[INFO] [stdout]    | --------- move the `impl` block outside of this function `main`
[INFO] [stdout] ...
[INFO] [stdout] 12 |     impl Semiring for bool {
[INFO] [stdout]    |     ^^^^^--------^^^^^^^^^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          `Semiring` is not local
[INFO] [stdout]    |
[INFO] [stdout]    = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl`
[INFO] [stdout]    = note: `#[warn(non_local_definitions)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item
[INFO] [stdout]   --> src/main.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout]  7 | fn main() {
[INFO] [stdout]    | --------- move the `impl` block outside of this function `main`
[INFO] [stdout] ...
[INFO] [stdout] 26 |     impl ClosedSemiring for bool {
[INFO] [stdout]    |     ^^^^^--------------^^^^^^^^^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          `ClosedSemiring` is not local
[INFO] [stdout]    |
[INFO] [stdout]    = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout]  7 | fn main() {
[INFO] [stdout]    | --------- move the `impl` block outside of this function `main`
[INFO] [stdout] ...
[INFO] [stdout] 12 |     impl Semiring for bool {
[INFO] [stdout]    |     ^^^^^--------^^^^^^^^^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          `Semiring` is not local
[INFO] [stdout]    |
[INFO] [stdout]    = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl`
[INFO] [stdout]    = note: `#[warn(non_local_definitions)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item
[INFO] [stdout]   --> src/main.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout]  7 | fn main() {
[INFO] [stdout]    | --------- move the `impl` block outside of this function `main`
[INFO] [stdout] ...
[INFO] [stdout] 26 |     impl ClosedSemiring for bool {
[INFO] [stdout]    |     ^^^^^--------------^^^^^^^^^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          `ClosedSemiring` is not local
[INFO] [stdout]    |
[INFO] [stdout]    = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `M` should have a snake case name
[INFO] [stdout]    --> src/main.rs:234:9
[INFO] [stdout]     |
[INFO] [stdout] 234 |     let M = Matrix::Raw(vec![
[INFO] [stdout]     |         ^ help: convert the identifier to snake case: `m`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `M` should have a snake case name
[INFO] [stdout]    --> src/main.rs:234:9
[INFO] [stdout]     |
[INFO] [stdout] 234 |     let M = Matrix::Raw(vec![
[INFO] [stdout]     |         ^ help: convert the identifier to snake case: `m`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "c9354844b476aded3e5b01f530006ffcc28082339a98e1347896899ba8f8f907", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9354844b476aded3e5b01f530006ffcc28082339a98e1347896899ba8f8f907", kill_on_drop: false }`
[INFO] [stdout] c9354844b476aded3e5b01f530006ffcc28082339a98e1347896899ba8f8f907
