[INFO] cloning repository https://github.com/dmorigin/simpermut-rc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dmorigin/simpermut-rc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdmorigin%2Fsimpermut-rc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdmorigin%2Fsimpermut-rc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 53b1ad874083dd64bacb5451c43482f30decefd0
[INFO] checking dmorigin/simpermut-rc against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdmorigin%2Fsimpermut-rc" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dmorigin/simpermut-rc on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dmorigin/simpermut-rc
[INFO] finished tweaking git repo https://github.com/dmorigin/simpermut-rc
[INFO] tweaked toml for git repo https://github.com/dmorigin/simpermut-rc written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/dmorigin/simpermut-rc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] be1ee7787c9af1b68a6e2239f482b753b5468e37adceb8cf75953315d6bf2148
[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" "be1ee7787c9af1b68a6e2239f482b753b5468e37adceb8cf75953315d6bf2148", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "be1ee7787c9af1b68a6e2239f482b753b5468e37adceb8cf75953315d6bf2148", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be1ee7787c9af1b68a6e2239f482b753b5468e37adceb8cf75953315d6bf2148", kill_on_drop: false }`
[INFO] [stdout] be1ee7787c9af1b68a6e2239f482b753b5468e37adceb8cf75953315d6bf2148
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1a193c2ff6fd3c4dea0e4629f8af73ba684288e9c07001a8500e09c14f6bf224
[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" "1a193c2ff6fd3c4dea0e4629f8af73ba684288e9c07001a8500e09c14f6bf224", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling serde v1.0.71
[INFO] [stderr]    Compiling ryu v0.2.4
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking rand_core v0.3.0
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]    Compiling proc-macro2 v0.4.13
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking regex-syntax v0.6.2
[INFO] [stderr]     Checking smallvec v0.6.4
[INFO] [stderr]     Checking rand_core v0.2.2
[INFO] [stderr]     Checking lock_api v0.1.3
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling quote v0.6.6
[INFO] [stderr]     Checking rand v0.4.3
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking termios v0.2.2
[INFO] [stderr]     Checking clicolors-control v0.2.0
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]    Compiling syn v0.14.8
[INFO] [stderr]     Checking aho-corasick v0.6.6
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking chrono v0.4.5
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking uuid v0.6.5
[INFO] [stderr]     Checking parking_lot v0.6.3
[INFO] [stderr]     Checking regex v1.0.2
[INFO] [stderr]     Checking console v0.6.1
[INFO] [stderr]     Checking indicatif v0.9.0
[INFO] [stderr]    Compiling serde_derive v1.0.71
[INFO] [stderr]     Checking serde_json v1.0.26
[INFO] [stderr]     Checking sim_permut v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/simcraft/mod.rs:156:69
[INFO] [stdout]     |
[INFO] [stdout] 156 |     pub fn permutation(&mut self, iterations: (u64, u64)) -> Result<(u64), Error> {
[INFO] [stdout]     |                                                                     ^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/simcraft/mod.rs:156:69
[INFO] [stdout]     |
[INFO] [stdout] 156 |     pub fn permutation(&mut self, iterations: (u64, u64)) -> Result<(u64), Error> {
[INFO] [stdout]     |                                                                     ^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 55.52s
[INFO] running `Command { std: "docker" "inspect" "1a193c2ff6fd3c4dea0e4629f8af73ba684288e9c07001a8500e09c14f6bf224", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a193c2ff6fd3c4dea0e4629f8af73ba684288e9c07001a8500e09c14f6bf224", kill_on_drop: false }`
[INFO] [stdout] 1a193c2ff6fd3c4dea0e4629f8af73ba684288e9c07001a8500e09c14f6bf224