[INFO] fetching crate mememo 0.1.1...
[INFO] testing mememo-0.1.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate mememo 0.1.1 into /workspace/builds/worker-100/source
[INFO] validating manifest of crates.io crate mememo 0.1.1 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mememo 0.1.1
[INFO] finished tweaking crates.io crate mememo 0.1.1
[INFO] tweaked toml for crates.io crate mememo 0.1.1 written to /workspace/builds/worker-100/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e8204d066f507f9d0f0c26a9719f4cf51b16c71d20c6616921f469ff9dd4930
[INFO] running `Command { std: "docker" "start" "-a" "8e8204d066f507f9d0f0c26a9719f4cf51b16c71d20c6616921f469ff9dd4930", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e8204d066f507f9d0f0c26a9719f4cf51b16c71d20c6616921f469ff9dd4930", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e8204d066f507f9d0f0c26a9719f4cf51b16c71d20c6616921f469ff9dd4930", kill_on_drop: false }`
[INFO] [stdout] 8e8204d066f507f9d0f0c26a9719f4cf51b16c71d20c6616921f469ff9dd4930
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b1a3f1b52fc3b8993abb7d37a988d6da1ba780c2b5dbede06c802da9ab1934c
[INFO] running `Command { std: "docker" "start" "-a" "1b1a3f1b52fc3b8993abb7d37a988d6da1ba780c2b5dbede06c802da9ab1934c", kill_on_drop: false }`
[INFO] [stderr]    Compiling mememo v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.58s
[INFO] running `Command { std: "docker" "inspect" "1b1a3f1b52fc3b8993abb7d37a988d6da1ba780c2b5dbede06c802da9ab1934c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b1a3f1b52fc3b8993abb7d37a988d6da1ba780c2b5dbede06c802da9ab1934c", kill_on_drop: false }`
[INFO] [stdout] 1b1a3f1b52fc3b8993abb7d37a988d6da1ba780c2b5dbede06c802da9ab1934c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] efccf1b8230fa12891285d0dc46b3956d6dcaa515bfd821bc413292e599b1a09
[INFO] running `Command { std: "docker" "start" "-a" "efccf1b8230fa12891285d0dc46b3956d6dcaa515bfd821bc413292e599b1a09", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mememo v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.24s
[INFO] running `Command { std: "docker" "inspect" "efccf1b8230fa12891285d0dc46b3956d6dcaa515bfd821bc413292e599b1a09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efccf1b8230fa12891285d0dc46b3956d6dcaa515bfd821bc413292e599b1a09", kill_on_drop: false }`
[INFO] [stdout] efccf1b8230fa12891285d0dc46b3956d6dcaa515bfd821bc413292e599b1a09
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 03c3c85c445cf9eaa42993991779c5f3a10fffee3d7f109f27a39fbe87de75fd
[INFO] running `Command { std: "docker" "start" "-a" "03c3c85c445cf9eaa42993991779c5f3a10fffee3d7f109f27a39fbe87de75fd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.17s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mememo-163e29c1db89e6d4)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/lib_test.rs (/opt/rustwide/target/debug/deps/lib_test-809e650fd85ce8a1)
[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 4 tests
[INFO] [stdout] test test_mean_vec ... ok
[INFO] [stdout] test test_mode ... ok
[INFO] [stdout] test test_median_odd ... ok
[INFO] [stdout] test test_median_even ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mememo
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/lib.rs - mean (line 16) ... ok
[INFO] [stdout] test src/lib.rs - median (line 40) ... ok
[INFO] [stdout] test src/lib.rs - mode (line 72) ... ok
[INFO] [stdout] test src/lib.rs - median (line 51) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.66s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "03c3c85c445cf9eaa42993991779c5f3a10fffee3d7f109f27a39fbe87de75fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03c3c85c445cf9eaa42993991779c5f3a10fffee3d7f109f27a39fbe87de75fd", kill_on_drop: false }`
[INFO] [stdout] 03c3c85c445cf9eaa42993991779c5f3a10fffee3d7f109f27a39fbe87de75fd