[INFO] updating cached repository https://github.com/sleibrock/rust-calculus
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f34eb42c2db0f7006f7b9bdca687c231b35e628e
[INFO] testing sleibrock/rust-calculus against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsleibrock%2Frust-calculus" "work/builds/worker-1/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sleibrock/rust-calculus on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/sleibrock/rust-calculus
[INFO] finished tweaking git repo https://github.com/sleibrock/rust-calculus
[INFO] tweaked toml for git repo https://github.com/sleibrock/rust-calculus written to work/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/sleibrock/rust-calculus already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] a0f71a686dc1956965bcbe32a2df940a6f89192c2e0489b4d7306603dda92308
[INFO] running `"docker" "start" "-a" "a0f71a686dc1956965bcbe32a2df940a6f89192c2e0489b4d7306603dda92308"`
[INFO] [stderr]    Compiling rust-calculus v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `exp2`
[INFO] [stderr]    --> src/derive.rs:112:17
[INFO] [stderr]     |
[INFO] [stderr] 112 |             let exp2 = unpack(expression);
[INFO] [stderr]     |                 ^^^^ help: consider prefixing with an underscore: `_exp2`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exp3`
[INFO] [stderr]    --> src/derive.rs:113:17
[INFO] [stderr]     |
[INFO] [stderr] 113 |             let exp3 = unpack(expression);
[INFO] [stderr]     |                 ^^^^ help: consider prefixing with an underscore: `_exp3`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]    --> src/derive.rs:120:27
[INFO] [stderr]     |
[INFO] [stderr] 120 |                 Expr::Var(c) => {
[INFO] [stderr]     |                           ^ help: consider prefixing with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expression`
[INFO] [stderr]    --> src/derive.rs:128:23
[INFO] [stderr]     |
[INFO] [stderr] 128 |         Expr::Cos(ref expression) => {
[INFO] [stderr]     |                       ^^^^^^^^^^ help: consider prefixing with an underscore: `_expression`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `power2`
[INFO] [stderr]    --> src/derive.rs:139:17
[INFO] [stderr]     |
[INFO] [stderr] 139 |             let power2 = unpack(power);
[INFO] [stderr]     |                 ^^^^^^ help: consider prefixing with an underscore: `_power2`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.22s
[INFO] running `"docker" "inspect" "a0f71a686dc1956965bcbe32a2df940a6f89192c2e0489b4d7306603dda92308"`
[INFO] running `"docker" "rm" "-f" "a0f71a686dc1956965bcbe32a2df940a6f89192c2e0489b4d7306603dda92308"`
[INFO] [stdout] a0f71a686dc1956965bcbe32a2df940a6f89192c2e0489b4d7306603dda92308
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] f38843f2890799ab1b4a3d398690b0699f59202c31d96b2b044475209a42fd29
[INFO] running `"docker" "start" "-a" "f38843f2890799ab1b4a3d398690b0699f59202c31d96b2b044475209a42fd29"`
[INFO] [stderr]    Compiling rust-calculus v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `exp2`
[INFO] [stderr]    --> src/derive.rs:112:17
[INFO] [stderr]     |
[INFO] [stderr] 112 |             let exp2 = unpack(expression);
[INFO] [stderr]     |                 ^^^^ help: consider prefixing with an underscore: `_exp2`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `exp3`
[INFO] [stderr]    --> src/derive.rs:113:17
[INFO] [stderr]     |
[INFO] [stderr] 113 |             let exp3 = unpack(expression);
[INFO] [stderr]     |                 ^^^^ help: consider prefixing with an underscore: `_exp3`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]    --> src/derive.rs:120:27
[INFO] [stderr]     |
[INFO] [stderr] 120 |                 Expr::Var(c) => {
[INFO] [stderr]     |                           ^ help: consider prefixing with an underscore: `_c`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expression`
[INFO] [stderr]    --> src/derive.rs:128:23
[INFO] [stderr]     |
[INFO] [stderr] 128 |         Expr::Cos(ref expression) => {
[INFO] [stderr]     |                       ^^^^^^^^^^ help: consider prefixing with an underscore: `_expression`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `power2`
[INFO] [stderr]    --> src/derive.rs:139:17
[INFO] [stderr]     |
[INFO] [stderr] 139 |             let power2 = unpack(power);
[INFO] [stderr]     |                 ^^^^^^ help: consider prefixing with an underscore: `_power2`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.42s
[INFO] running `"docker" "inspect" "f38843f2890799ab1b4a3d398690b0699f59202c31d96b2b044475209a42fd29"`
[INFO] running `"docker" "rm" "-f" "f38843f2890799ab1b4a3d398690b0699f59202c31d96b2b044475209a42fd29"`
[INFO] [stdout] f38843f2890799ab1b4a3d398690b0699f59202c31d96b2b044475209a42fd29
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] 1d84727465d0daa7d654d463242beb4254ca4ee6138ce850d8c7cb697e4311f7
[INFO] running `"docker" "start" "-a" "1d84727465d0daa7d654d463242beb4254ca4ee6138ce850d8c7cb697e4311f7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_calculus-9208c4ec7a87a49d
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_calculus-124fd3c43df17608
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rust-calculus
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "1d84727465d0daa7d654d463242beb4254ca4ee6138ce850d8c7cb697e4311f7"`
[INFO] running `"docker" "rm" "-f" "1d84727465d0daa7d654d463242beb4254ca4ee6138ce850d8c7cb697e4311f7"`
[INFO] [stdout] 1d84727465d0daa7d654d463242beb4254ca4ee6138ce850d8c7cb697e4311f7