[INFO] cloning repository https://github.com/amin-mir/rust-exercises
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/amin-mir/rust-exercises" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famin-mir%2Frust-exercises", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famin-mir%2Frust-exercises'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ef6874b53a6affbe6d372a6b8bdb4a3d1aa7fe92
[INFO] testing amin-mir/rust-exercises against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famin-mir%2Frust-exercises" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/amin-mir/rust-exercises on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/amin-mir/rust-exercises
[INFO] finished tweaking git repo https://github.com/amin-mir/rust-exercises
[INFO] tweaked toml for git repo https://github.com/amin-mir/rust-exercises written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/amin-mir/rust-exercises already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 65c3db8eb23299c2a542eae03a7baadd6704fbf367ef24ff3130a61edc25d0dd
[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" "65c3db8eb23299c2a542eae03a7baadd6704fbf367ef24ff3130a61edc25d0dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "65c3db8eb23299c2a542eae03a7baadd6704fbf367ef24ff3130a61edc25d0dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65c3db8eb23299c2a542eae03a7baadd6704fbf367ef24ff3130a61edc25d0dd", kill_on_drop: false }`
[INFO] [stdout] 65c3db8eb23299c2a542eae03a7baadd6704fbf367ef24ff3130a61edc25d0dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b47faf4a7a7803094e1ab496969524c1d96811d140f0df4cd8e28dfce71accdc
[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" "b47faf4a7a7803094e1ab496969524c1d96811d140f0df4cd8e28dfce71accdc", kill_on_drop: false }`
[INFO] [stderr]    Compiling cacher v0.1.0 (/opt/rustwide/workdir/cacher)
[INFO] [stderr]    Compiling pig-latin-enc v0.1.0 (/opt/rustwide/workdir/pig-latin-enc)
[INFO] [stderr]    Compiling deref-enum-to-u8-slc v0.1.0 (/opt/rustwide/workdir/deref-enum-to-u8-slc)
[INFO] [stderr]    Compiling memanager v0.1.0 (/opt/rustwide/workdir/memanager)
[INFO] [stderr]    Compiling statistics v0.1.0 (/opt/rustwide/workdir/statistics)
[INFO] [stdout] warning: associated function is never used: `get_all_empls`
[INFO] [stdout]   --> memanager/src/db.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn get_all_empls(&self) -> impl Iterator<Item = &str> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.81s
[INFO] running `Command { std: "docker" "inspect" "b47faf4a7a7803094e1ab496969524c1d96811d140f0df4cd8e28dfce71accdc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b47faf4a7a7803094e1ab496969524c1d96811d140f0df4cd8e28dfce71accdc", kill_on_drop: false }`
[INFO] [stdout] b47faf4a7a7803094e1ab496969524c1d96811d140f0df4cd8e28dfce71accdc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 25be08cfe94a8b974cda063c5cce764323137e41132f1d3c02a496cf2ed4a0be
[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" "25be08cfe94a8b974cda063c5cce764323137e41132f1d3c02a496cf2ed4a0be", kill_on_drop: false }`
[INFO] [stderr]    Compiling memanager v0.1.0 (/opt/rustwide/workdir/memanager)
[INFO] [stderr]    Compiling pig-latin-enc v0.1.0 (/opt/rustwide/workdir/pig-latin-enc)
[INFO] [stderr]    Compiling deref-enum-to-u8-slc v0.1.0 (/opt/rustwide/workdir/deref-enum-to-u8-slc)
[INFO] [stderr]    Compiling statistics v0.1.0 (/opt/rustwide/workdir/statistics)
[INFO] [stderr]    Compiling cacher v0.1.0 (/opt/rustwide/workdir/cacher)
[INFO] [stdout] warning: associated function is never used: `get_all_empls`
[INFO] [stdout]   --> memanager/src/db.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn get_all_empls(&self) -> impl Iterator<Item = &str> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.31s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/cacher-2523318ce47b3bae)
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/deref_enum_to_u8_slc-541edb1be61f0a6b)
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/memanager-36858fcb90e3e473)
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/pig_latin_enc-b40bc2824860868d)
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/statistics-12f57dcfbd3c9884)
[INFO] running `Command { std: "docker" "inspect" "25be08cfe94a8b974cda063c5cce764323137e41132f1d3c02a496cf2ed4a0be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25be08cfe94a8b974cda063c5cce764323137e41132f1d3c02a496cf2ed4a0be", kill_on_drop: false }`
[INFO] [stdout] 25be08cfe94a8b974cda063c5cce764323137e41132f1d3c02a496cf2ed4a0be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", 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] 523d53119303fedda47dc183bf78698579fa7f4320757568c8b0134db733d1d6
[INFO] running `Command { std: "docker" "start" "-a" "523d53119303fedda47dc183bf78698579fa7f4320757568c8b0134db733d1d6", kill_on_drop: false }`
[INFO] [stderr] warning: associated function is never used: `get_all_empls`
[INFO] [stderr]   --> memanager/src/db.rs:37:12
[INFO] [stderr]    |
[INFO] [stderr] 37 |     pub fn get_all_empls(&self) -> impl Iterator<Item = &str> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `memanager` (bin "memanager" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/cacher-2523318ce47b3bae)
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/deref_enum_to_u8_slc-541edb1be61f0a6b)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/memanager-36858fcb90e3e473)
[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; finished in 0.00s
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/pig_latin_enc-b40bc2824860868d)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/statistics-12f57dcfbd3c9884)
[INFO] [stdout] test tests::should_work ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::calc_median_even_number_of_input_integers ... ok
[INFO] [stderr]    Doc-tests pig-latin-enc
[INFO] [stdout] test tests::calc_median_odd_number_of_input_integers ... ok
[INFO] [stdout] test tests::calc_mode_should_return_most_frequent ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests statistics
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "523d53119303fedda47dc183bf78698579fa7f4320757568c8b0134db733d1d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "523d53119303fedda47dc183bf78698579fa7f4320757568c8b0134db733d1d6", kill_on_drop: false }`
[INFO] [stdout] 523d53119303fedda47dc183bf78698579fa7f4320757568c8b0134db733d1d6