[INFO] updating cached repository https://github.com/CollinValley/rust_practice
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f43ee9bf1397a7e46b78a5a03bc6811988dfc58f
[INFO] testing CollinValley/rust_practice against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCollinValley%2Frust_practice" "/workspace/builds/worker-8/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CollinValley/rust_practice on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/CollinValley/rust_practice
[INFO] finished tweaking git repo https://github.com/CollinValley/rust_practice
[INFO] tweaked toml for git repo https://github.com/CollinValley/rust_practice written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/CollinValley/rust_practice already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "+1.44.0" "build" "--frozen"`
[INFO] [stdout] 2cd27acc7d74fe57fa90a01b31cc1086b0a30d8e139af51265a75e3c278954fe
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "2cd27acc7d74fe57fa90a01b31cc1086b0a30d8e139af51265a75e3c278954fe"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling num-bigint v0.2.1
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling rust_practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/chapter_11.rs:6:24
[INFO] [stderr]   |
[INFO] [stderr] 6 | fn say_hello(out: &mut Write) -> std::io::Result<()> {
[INFO] [stderr]   |                        ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right_matches': superseded by `trim_end_matches`
[INFO] [stderr]   --> src/chapter_10.rs:84:23
[INFO] [stderr]    |
[INFO] [stderr] 84 |         self.plural().trim_right_matches('s')
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated item: `trim_end_matches`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Extrema`
[INFO] [stderr]    --> src/chapter_9.rs:157:8
[INFO] [stderr]     |
[INFO] [stderr] 157 | struct Extrema<'elt> {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_extrema`
[INFO] [stderr]    --> src/chapter_9.rs:162:4
[INFO] [stderr]     |
[INFO] [stderr] 162 | fn find_extrema<'s>(slice: &'s [i32]) -> Extrema<'s> {
[INFO] [stderr]     |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `say_hello`
[INFO] [stderr]  --> src/chapter_11.rs:6:4
[INFO] [stderr]   |
[INFO] [stderr] 6 | fn say_hello(out: &mut Write) -> std::io::Result<()> {
[INFO] [stderr]   |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `min`
[INFO] [stderr]   --> src/chapter_11.rs:32:4
[INFO] [stderr]    |
[INFO] [stderr] 32 | fn min<T: Ord>(value1: T, value2: T) -> T {
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dot`
[INFO] [stderr]    --> src/chapter_11.rs:199:4
[INFO] [stderr]     |
[INFO] [stderr] 199 | fn dot<N>(v1: &[N], v2: &[N]) -> N
[INFO] [stderr]     |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.72s
[INFO] running `"docker" "inspect" "2cd27acc7d74fe57fa90a01b31cc1086b0a30d8e139af51265a75e3c278954fe"`
[INFO] running `"docker" "rm" "-f" "2cd27acc7d74fe57fa90a01b31cc1086b0a30d8e139af51265a75e3c278954fe"`
[INFO] [stdout] 2cd27acc7d74fe57fa90a01b31cc1086b0a30d8e139af51265a75e3c278954fe
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 239a4b9fc690dba572cc5c7f936960a23c95af89c3992250982a478faedec6ef
[INFO] running `"docker" "start" "-a" "239a4b9fc690dba572cc5c7f936960a23c95af89c3992250982a478faedec6ef"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust_practice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/chapter_11.rs:6:24
[INFO] [stderr]   |
[INFO] [stderr] 6 | fn say_hello(out: &mut Write) -> std::io::Result<()> {
[INFO] [stderr]   |                        ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right_matches': superseded by `trim_end_matches`
[INFO] [stderr]   --> src/chapter_10.rs:84:23
[INFO] [stderr]    |
[INFO] [stderr] 84 |         self.plural().trim_right_matches('s')
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated item: `trim_end_matches`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 30.68s
[INFO] running `"docker" "inspect" "239a4b9fc690dba572cc5c7f936960a23c95af89c3992250982a478faedec6ef"`
[INFO] running `"docker" "rm" "-f" "239a4b9fc690dba572cc5c7f936960a23c95af89c3992250982a478faedec6ef"`
[INFO] [stdout] 239a4b9fc690dba572cc5c7f936960a23c95af89c3992250982a478faedec6ef
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "+1.44.0" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] aff47431263aa8e6d3a273f34fbfbd17b0fccb6f58032807a6918433b0cdf24d
[INFO] running `"docker" "start" "-a" "aff47431263aa8e6d3a273f34fbfbd17b0fccb6f58032807a6918433b0cdf24d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/chapter_11.rs:6:24
[INFO] [stderr]   |
[INFO] [stderr] 6 | fn say_hello(out: &mut Write) -> std::io::Result<()> {
[INFO] [stderr]   |                        ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right_matches': superseded by `trim_end_matches`
[INFO] [stderr]   --> src/chapter_10.rs:84:23
[INFO] [stderr]    |
[INFO] [stderr] 84 |         self.plural().trim_right_matches('s')
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated item: `trim_end_matches`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.78s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_practice-9a1d9c4b5f242fa1
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test chapter_10::test_add_and_search_binary_tree ... ok
[INFO] [stdout] test chapter_10::test_build_basic_tree ... ok
[INFO] [stdout] test chapter_10::test_rough_time_to_english ... ok
[INFO] [stdout] test chapter_10::test_generic_enums ... ok
[INFO] [stdout] test chapter_11::test_dot ... ok
[INFO] [stdout] test chapter_10::test_timeunit ... ok
[INFO] [stdout] test chapter_11::test_say_hello ... ok
[INFO] [stdout] test chapter_11::test_min ... ok
[INFO] [stdout] test chapter_12::test_add_assign ... ok
[INFO] [stdout] test chapter_12::test_eq ... ok
[INFO] [stdout] test chapter_12::test_complex_negation ... ok
[INFO] [stdout] test chapter_12::test_fmt_display ... ok
[INFO] [stdout] test chapter_9::test_find_extrema ... ok
[INFO] [stdout] test chapter_9::test_gqueue ... ok
[INFO] [stdout] test chapter_9::test_queue ... ok
[INFO] [stdout] test chapter_12::test_complex_add ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "aff47431263aa8e6d3a273f34fbfbd17b0fccb6f58032807a6918433b0cdf24d"`
[INFO] running `"docker" "rm" "-f" "aff47431263aa8e6d3a273f34fbfbd17b0fccb6f58032807a6918433b0cdf24d"`
[INFO] [stdout] aff47431263aa8e6d3a273f34fbfbd17b0fccb6f58032807a6918433b0cdf24d