[INFO] updating cached repository andrematheus/programming-praxis-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/andrematheus/programming-praxis-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/andrematheus/programming-praxis-rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/andrematheus/programming-praxis-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/andrematheus/programming-praxis-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/andrematheus/programming-praxis-rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/andrematheus/programming-praxis-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/andrematheus/programming-praxis-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 000d331077581d8f1e6cd4ee7245b948ceeeb31b
[INFO] sha for GitHub repo andrematheus/programming-praxis-rust: 000d331077581d8f1e6cd4ee7245b948ceeeb31b
[INFO] validating manifest of andrematheus/programming-praxis-rust on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of andrematheus/programming-praxis-rust on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing andrematheus/programming-praxis-rust
[INFO] finished frobbing andrematheus/programming-praxis-rust
[INFO] frobbed toml for andrematheus/programming-praxis-rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/andrematheus/programming-praxis-rust/Cargo.toml
[INFO] started frobbing andrematheus/programming-praxis-rust
[INFO] finished frobbing andrematheus/programming-praxis-rust
[INFO] frobbed toml for andrematheus/programming-praxis-rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/andrematheus/programming-praxis-rust/Cargo.toml
[INFO] crate andrematheus/programming-praxis-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing andrematheus/programming-praxis-rust against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/andrematheus/programming-praxis-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] e1b1700bc8363bb98422821d866fab0a6a5de296e1c3ff0f6d50aa65f7667f42
[INFO] running `"docker" "start" "-a" "e1b1700bc8363bb98422821d866fab0a6a5de296e1c3ff0f6d50aa65f7667f42"`
[INFO] [stderr]    Compiling pprust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.14s
[INFO] running `"docker" "inspect" "e1b1700bc8363bb98422821d866fab0a6a5de296e1c3ff0f6d50aa65f7667f42"`
[INFO] running `"docker" "rm" "-f" "e1b1700bc8363bb98422821d866fab0a6a5de296e1c3ff0f6d50aa65f7667f42"`
[INFO] [stdout] e1b1700bc8363bb98422821d866fab0a6a5de296e1c3ff0f6d50aa65f7667f42
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/andrematheus/programming-praxis-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] a335446c528be3205bd29483dc0138604c2216b527d1b4943daa9ca1e895619e
[INFO] running `"docker" "start" "-a" "a335446c528be3205bd29483dc0138604c2216b527d1b4943daa9ca1e895619e"`
[INFO] [stderr]    Compiling pprust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.95s
[INFO] running `"docker" "inspect" "a335446c528be3205bd29483dc0138604c2216b527d1b4943daa9ca1e895619e"`
[INFO] running `"docker" "rm" "-f" "a335446c528be3205bd29483dc0138604c2216b527d1b4943daa9ca1e895619e"`
[INFO] [stdout] a335446c528be3205bd29483dc0138604c2216b527d1b4943daa9ca1e895619e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/andrematheus/programming-praxis-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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=warn" "-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 19608135aefd5aaf728df58bf0daebc3b17cc6b4e839a11bcb69a88f0af60a41
[INFO] running `"docker" "start" "-a" "19608135aefd5aaf728df58bf0daebc3b17cc6b4e839a11bcb69a88f0af60a41"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/pprust-3f369dae9bb99760
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test rpncalculator::tests::should_add_f64_to_stack ... ok
[INFO] [stdout] test rpncalculator::tests::should_add_two_f64_in_stack ... ok
[INFO] [stdout] test rpncalculator::tests::should_add_two_f64_to_stack ... ok
[INFO] [stdout] test rpncalculator::tests::should_calculate_the_example_from_the_site ... ok
[INFO] [stdout] test rpncalculator::tests::should_calculate_multiplication ... ok
[INFO] [stdout] test rpncalculator::tests::should_calculate_division ... ok
[INFO] [stdout] test rpncalculator::tests::should_be_possible_to_add_operator_that_operates_on_stack ... ok
[INFO] [stdout] test rpncalculator::tests::should_return_error_when_adding_without_enough_operands ... ok
[INFO] [stdout] test rpncalculator::tests::should_return_error_when_evaluating_garbage ... ok
[INFO] [stdout] test rpncalculator::tests::should_use_operators_passed_at_construction_time ... ok
[INFO] [stdout] test rpncalculator::tests::should_extend_default_operators_with_operators ... ok
[INFO] [stdout] test rpncalculator::tests::should_create_a_calculator ... ok
[INFO] [stdout] test rpncalculator::tests::should_not_pop_without_enough_operands ... ok
[INFO] [stdout] test rpncalculator::tests::should_calculate_subtraction ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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/crater/target/debug/deps/rpncalculator-02d47104f50e81ba
[INFO] [stderr]    Doc-tests pprust
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/rpncalculator.rs - rpncalculator::default_operators (line 125) ... ok
[INFO] [stdout] test src/rpncalculator.rs - new_operator (line 69) ... ok
[INFO] [stdout] test src/rpncalculator.rs - new_operator (line 50) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "19608135aefd5aaf728df58bf0daebc3b17cc6b4e839a11bcb69a88f0af60a41"`
[INFO] running `"docker" "rm" "-f" "19608135aefd5aaf728df58bf0daebc3b17cc6b4e839a11bcb69a88f0af60a41"`
[INFO] [stdout] 19608135aefd5aaf728df58bf0daebc3b17cc6b4e839a11bcb69a88f0af60a41