[INFO] crate recoreco 0.1.9 is already in cache
[INFO] testing recoreco-0.1.9 against 1.38.0 for beta-1.39-1
[INFO] extracting crate recoreco 0.1.9 into work/builds/worker-10/source
[INFO] validating manifest of crates.io crate recoreco 0.1.9 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate recoreco 0.1.9
[INFO] finished tweaking crates.io crate recoreco 0.1.9
[INFO] tweaked toml for crates.io crate recoreco 0.1.9 written to work/builds/worker-10/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-10/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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] fe82d91921ee7cca959ba6754427bdb8563163f7a9fdfe03dd84b8bc95cb8016
[INFO] running `"docker" "start" "-a" "fe82d91921ee7cca959ba6754427bdb8563163f7a9fdfe03dd84b8bc95cb8016"`
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling rayon-core v1.6.0
[INFO] [stderr]    Compiling regex-automata v0.1.8
[INFO] [stderr]    Compiling bstr v0.2.8
[INFO] [stderr]    Compiling csv-core v0.1.6
[INFO] [stderr]    Compiling rayon v1.2.0
[INFO] [stderr]    Compiling csv v1.1.1
[INFO] [stderr]    Compiling recoreco v0.1.9 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/io.rs:133:10
[INFO] [stderr]     |
[INFO] [stderr] 133 | ) -> Box<Write>
[INFO] [stderr]     |          ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:184:17
[INFO] [stderr]     |
[INFO] [stderr] 184 |             let mut user_history = &mut samples_of_a[user_idx];
[INFO] [stderr]     |                 ----^^^^^^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/bin/indicators.rs:97:21
[INFO] [stderr]    |
[INFO] [stderr] 97 | ) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                     ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.54s
[INFO] running `"docker" "inspect" "fe82d91921ee7cca959ba6754427bdb8563163f7a9fdfe03dd84b8bc95cb8016"`
[INFO] running `"docker" "rm" "-f" "fe82d91921ee7cca959ba6754427bdb8563163f7a9fdfe03dd84b8bc95cb8016"`
[INFO] [stdout] fe82d91921ee7cca959ba6754427bdb8563163f7a9fdfe03dd84b8bc95cb8016
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-10/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" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] a5e0f5482ca2897c098d4c828401badd0c37a4dfee22703e1b1d7548a5711d65
[INFO] running `"docker" "start" "-a" "a5e0f5482ca2897c098d4c828401badd0c37a4dfee22703e1b1d7548a5711d65"`
[INFO] [stderr]    Compiling recoreco v0.1.9 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/bin/indicators.rs:97:21
[INFO] [stderr]    |
[INFO] [stderr] 97 | ) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                     ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/io.rs:133:10
[INFO] [stderr]     |
[INFO] [stderr] 133 | ) -> Box<Write>
[INFO] [stderr]     |          ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:184:17
[INFO] [stderr]     |
[INFO] [stderr] 184 |             let mut user_history = &mut samples_of_a[user_idx];
[INFO] [stderr]     |                 ----^^^^^^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.60s
[INFO] running `"docker" "inspect" "a5e0f5482ca2897c098d4c828401badd0c37a4dfee22703e1b1d7548a5711d65"`
[INFO] running `"docker" "rm" "-f" "a5e0f5482ca2897c098d4c828401badd0c37a4dfee22703e1b1d7548a5711d65"`
[INFO] [stdout] a5e0f5482ca2897c098d4c828401badd0c37a4dfee22703e1b1d7548a5711d65
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-10/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" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] c184a72b6d8420c8109b0f89f86d7c4de5640b4c9a0594b20e26d842a1220def
[INFO] running `"docker" "start" "-a" "c184a72b6d8420c8109b0f89f86d7c4de5640b4c9a0594b20e26d842a1220def"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/recoreco-77e4d7b30edaff0b
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test llr::tests::scored_item_ordering_reversed ... ok
[INFO] [stdout] test stats::tests::renaming_from_dict ... ok
[INFO] [stdout] test stats::tests::dict_from_owned_tuple_iterator ... ok
[INFO] [stdout] test llr::tests::topk ... ok
[INFO] [stdout] test stats::tests::dict_from_tuple_iterator ... ok
[INFO] [stdout] test llr::tests::llr ... ok
[INFO] [stdout] test usage_tests::tests::programmatic_usage ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/recoreco-39c2bfd6b7e91611
[INFO] [stderr]    Doc-tests recoreco
[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] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - indicators (line 72) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "c184a72b6d8420c8109b0f89f86d7c4de5640b4c9a0594b20e26d842a1220def"`
[INFO] running `"docker" "rm" "-f" "c184a72b6d8420c8109b0f89f86d7c4de5640b4c9a0594b20e26d842a1220def"`
[INFO] [stdout] c184a72b6d8420c8109b0f89f86d7c4de5640b4c9a0594b20e26d842a1220def