[INFO] cloning repository https://github.com/Kloenk/calc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Kloenk/calc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKloenk%2Fcalc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKloenk%2Fcalc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3a3f63efd96796552b2e3b48307d443d8c91c2a7
[INFO] checking Kloenk/calc against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKloenk%2Fcalc" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Kloenk/calc on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Kloenk/calc
[INFO] finished tweaking git repo https://github.com/Kloenk/calc
[INFO] tweaked toml for git repo https://github.com/Kloenk/calc written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/Kloenk/calc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta" "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] 747a7ae9431cf0533f9bc2d824e1ca4273ccaaf6dc1984c7a383e42595f9fb2d
[INFO] running `Command { std: "docker" "start" "-a" "747a7ae9431cf0533f9bc2d824e1ca4273ccaaf6dc1984c7a383e42595f9fb2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "747a7ae9431cf0533f9bc2d824e1ca4273ccaaf6dc1984c7a383e42595f9fb2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "747a7ae9431cf0533f9bc2d824e1ca4273ccaaf6dc1984c7a383e42595f9fb2d", kill_on_drop: false }`
[INFO] [stdout] 747a7ae9431cf0533f9bc2d824e1ca4273ccaaf6dc1984c7a383e42595f9fb2d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab51760d105fcd488d180a749711baa5b5c5259a34612f8cac486bf6ad3a7b35
[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" "ab51760d105fcd488d180a749711baa5b5c5259a34612f8cac486bf6ad3a7b35", 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking calc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:141:13
[INFO] [stdout]     |
[INFO] [stdout] 141 |             _ => todo!(),
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::str::FromStr`
[INFO] [stdout]  --> src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/lib.rs:141:13
[INFO] [stdout]     |
[INFO] [stdout] 141 |             _ => todo!(),
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `isNumber` should have a snake case name
[INFO] [stdout]   --> src/lib.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn isNumber(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^ help: convert the identifier to snake case: `is_number`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `isNumber` should have a snake case name
[INFO] [stdout]   --> src/lib.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn isNumber(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^ help: convert the identifier to snake case: `is_number`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 01s
[INFO] running `Command { std: "docker" "inspect" "ab51760d105fcd488d180a749711baa5b5c5259a34612f8cac486bf6ad3a7b35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab51760d105fcd488d180a749711baa5b5c5259a34612f8cac486bf6ad3a7b35", kill_on_drop: false }`
[INFO] [stdout] ab51760d105fcd488d180a749711baa5b5c5259a34612f8cac486bf6ad3a7b35