[INFO] cloning repository https://github.com/emilk/drop-merge-sort
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/emilk/drop-merge-sort" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femilk%2Fdrop-merge-sort", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femilk%2Fdrop-merge-sort'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4bf75cce298565133538bbaac7d39dbe6eb152e5
[INFO] testing emilk/drop-merge-sort against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Femilk%2Fdrop-merge-sort" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/emilk/drop-merge-sort on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/emilk/drop-merge-sort
[INFO] finished tweaking git repo https://github.com/emilk/drop-merge-sort
[INFO] tweaked toml for git repo https://github.com/emilk/drop-merge-sort written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/emilk/drop-merge-sort already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded maybe-uninit v2.0.0
[INFO] [stderr]   Downloaded nodrop v0.1.14
[INFO] [stderr]   Downloaded crossbeam-channel v0.4.4
[INFO] [stderr]   Downloaded gnuplot v0.0.22
[INFO] [stderr]   Downloaded pbr v1.0.3
[INFO] [stderr]   Downloaded quickersort v3.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 57131a3ee0b5f2e9cacec39de8d9943646f8c4d07d8603b5e54f13066ce677b6
[INFO] running `Command { std: "docker" "start" "-a" "57131a3ee0b5f2e9cacec39de8d9943646f8c4d07d8603b5e54f13066ce677b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "57131a3ee0b5f2e9cacec39de8d9943646f8c4d07d8603b5e54f13066ce677b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57131a3ee0b5f2e9cacec39de8d9943646f8c4d07d8603b5e54f13066ce677b6", kill_on_drop: false }`
[INFO] [stdout] 57131a3ee0b5f2e9cacec39de8d9943646f8c4d07d8603b5e54f13066ce677b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 548bbccc16eed477259fc891687993a7f747478403c6e47b26ce02a995f44120
[INFO] running `Command { std: "docker" "start" "-a" "548bbccc16eed477259fc891687993a7f747478403c6e47b26ce02a995f44120", kill_on_drop: false }`
[INFO] [stderr]    Compiling dmsort v1.0.2-alpha.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "548bbccc16eed477259fc891687993a7f747478403c6e47b26ce02a995f44120", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "548bbccc16eed477259fc891687993a7f747478403c6e47b26ce02a995f44120", kill_on_drop: false }`
[INFO] [stdout] 548bbccc16eed477259fc891687993a7f747478403c6e47b26ce02a995f44120
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 919f076a992a3eac485ae00b8051670eb20a080dfe0668f1d0c0729622a8f905
[INFO] running `Command { std: "docker" "start" "-a" "919f076a992a3eac485ae00b8051670eb20a080dfe0668f1d0c0729622a8f905", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling gnuplot v0.0.22
[INFO] [stderr]    Compiling quickersort v3.0.1
[INFO] [stderr]    Compiling crossbeam-channel v0.4.4
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling pbr v1.0.3
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling dmsort v1.0.2-alpha.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> tests/benchmark.rs:229:24
[INFO] [stdout]     |
[INFO] [stdout] 229 |     use rand::SeedableRng;;
[INFO] [stdout]     |                           ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/tests.rs:104:13
[INFO] [stdout]     |
[INFO] [stdout] 104 |                     panic!(scheuled_panic_code.clone());
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 104 |                     panic!("{}", scheuled_panic_code.clone());
[INFO] [stdout]     |                            +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 6.05s
[INFO] running `Command { std: "docker" "inspect" "919f076a992a3eac485ae00b8051670eb20a080dfe0668f1d0c0729622a8f905", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "919f076a992a3eac485ae00b8051670eb20a080dfe0668f1d0c0729622a8f905", kill_on_drop: false }`
[INFO] [stdout] 919f076a992a3eac485ae00b8051670eb20a080dfe0668f1d0c0729622a8f905
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] eaf75fe5761182f5db03537895587d2b41e148d6bb0b8abc59d307eed53011a6
[INFO] running `Command { std: "docker" "start" "-a" "eaf75fe5761182f5db03537895587d2b41e148d6bb0b8abc59d307eed53011a6", kill_on_drop: false }`
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> tests/tests.rs:104:13
[INFO] [stderr]     |
[INFO] [stderr] 104 |                     panic!(scheuled_panic_code.clone());
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stderr]     = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr] help: add a "{}" format string to Display the message
[INFO] [stderr]     |
[INFO] [stderr] 104 |                     panic!("{}", scheuled_panic_code.clone());
[INFO] [stderr]     |                            +++++
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> tests/benchmark.rs:229:24
[INFO] [stderr]     |
[INFO] [stderr] 229 |     use rand::SeedableRng;;
[INFO] [stderr]     |                           ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `dmsort` (test "tests") generated 1 warning
[INFO] [stderr] warning: `dmsort` (test "benchmark") generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running tests/benchmark.rs (/opt/rustwide/target/debug/deps/benchmark-e09f69f1f2d4c89f)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test benchmarks ... ignored
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/tests.rs (/opt/rustwide/target/debug/deps/tests-68a355a789db5679)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test simple_tests ... ok
[INFO] [stdout] test test_unwind ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests dmsort
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/dmsort.rs - dmsort::sort_by_key (line 379) ... ok
[INFO] [stdout] test src/dmsort.rs - dmsort::sort (line 394) ... ok
[INFO] [stdout] test src/dmsort.rs - dmsort::sort_by (line 365) ... ok
[INFO] [stdout] test src/lib.rs - (line 18) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.79s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "eaf75fe5761182f5db03537895587d2b41e148d6bb0b8abc59d307eed53011a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eaf75fe5761182f5db03537895587d2b41e148d6bb0b8abc59d307eed53011a6", kill_on_drop: false }`
[INFO] [stdout] eaf75fe5761182f5db03537895587d2b41e148d6bb0b8abc59d307eed53011a6