[INFO] cloning repository kevlarr/rusty-calc
[INFO] running `"git" "clone" "--bare" "git://github.com/kevlarr/rusty-calc.git" "work/cache/sources/gh/kevlarr/rusty-calc"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/kevlarr/rusty-calc'...
[INFO] running `"git" "clone" "work/cache/sources/gh/kevlarr/rusty-calc" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/kevlarr/rusty-calc"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/kevlarr/rusty-calc'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kevlarr/rusty-calc" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/kevlarr/rusty-calc"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/kevlarr/rusty-calc'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 60f28a09b2e4bc9b8549817d2b5181a0f85a8b49
[INFO] sha for GitHub repo kevlarr/rusty-calc: 60f28a09b2e4bc9b8549817d2b5181a0f85a8b49
[INFO] validating manifest of kevlarr/rusty-calc on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of kevlarr/rusty-calc on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing kevlarr/rusty-calc
[INFO] finished frobbing kevlarr/rusty-calc
[INFO] frobbed toml for kevlarr/rusty-calc written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/kevlarr/rusty-calc/Cargo.toml
[INFO] started frobbing kevlarr/rusty-calc
[INFO] finished frobbing kevlarr/rusty-calc
[INFO] frobbed toml for kevlarr/rusty-calc written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/kevlarr/rusty-calc/Cargo.toml
[INFO] crate kevlarr/rusty-calc already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking kevlarr/rusty-calc against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-5/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/kevlarr/rusty-calc:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d2238ea5939ba6babeede8af2825e0aa1c984c32649d29d75a05e4ddc04e31a3
[INFO] running `"docker" "start" "-a" "d2238ea5939ba6babeede8af2825e0aa1c984c32649d29d75a05e4ddc04e31a3"`
[INFO] [stderr]     Checking rustycalc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/types/expression.rs:14:21
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn from_str(s: &str) -> Expression {
[INFO] [stderr]    |                     ^ help: consider prefixing with an underscore: `_s`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `op`
[INFO] [stderr]   --> src/types/expression.rs:58:23
[INFO] [stderr]    |
[INFO] [stderr] 58 |             Node(lhs, op, rhs) =>
[INFO] [stderr]    |                       ^^ help: consider prefixing with an underscore: `_op`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/types/expression.rs:14:21
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn from_str(s: &str) -> Expression {
[INFO] [stderr]    |                     ^ help: consider prefixing with an underscore: `_s`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `op`
[INFO] [stderr]   --> src/types/expression.rs:58:23
[INFO] [stderr]    |
[INFO] [stderr] 58 |             Node(lhs, op, rhs) =>
[INFO] [stderr]    |                       ^^ help: consider prefixing with an underscore: `_op`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Expression`
[INFO] [stderr]  --> src/main.rs:5:24
[INFO] [stderr]   |
[INFO] [stderr] 5 | use rustycalc::types::{Expression, Operation};
[INFO] [stderr]   |                        ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Expression`
[INFO] [stderr]  --> src/main.rs:5:24
[INFO] [stderr]   |
[INFO] [stderr] 5 | use rustycalc::types::{Expression, Operation};
[INFO] [stderr]   |                        ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.79s
[INFO] running `"docker" "inspect" "d2238ea5939ba6babeede8af2825e0aa1c984c32649d29d75a05e4ddc04e31a3"`
[INFO] running `"docker" "rm" "-f" "d2238ea5939ba6babeede8af2825e0aa1c984c32649d29d75a05e4ddc04e31a3"`
[INFO] [stdout] d2238ea5939ba6babeede8af2825e0aa1c984c32649d29d75a05e4ddc04e31a3