[INFO] fetching crate xgboost 0.1.4...
[INFO] checking xgboost-0.1.4 against master#af3c6e733a40e671550e0f0f5aeecaa13772ba56 for pr-74989
[INFO] extracting crate xgboost 0.1.4 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate xgboost 0.1.4 on toolchain af3c6e733a40e671550e0f0f5aeecaa13772ba56
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate xgboost 0.1.4
[INFO] finished tweaking crates.io crate xgboost 0.1.4
[INFO] tweaked toml for crates.io crate xgboost 0.1.4 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d5beadd8b9c342a6efa5699dfb3379b7f598e96eadce1594e0a304ebed8fed01
[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" "d5beadd8b9c342a6efa5699dfb3379b7f598e96eadce1594e0a304ebed8fed01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5beadd8b9c342a6efa5699dfb3379b7f598e96eadce1594e0a304ebed8fed01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5beadd8b9c342a6efa5699dfb3379b7f598e96eadce1594e0a304ebed8fed01", kill_on_drop: false }`
[INFO] [stdout] d5beadd8b9c342a6efa5699dfb3379b7f598e96eadce1594e0a304ebed8fed01
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=forbid" "-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e6d4eb2a06faa963c3b8b4e052e0f0ce291465ed5bfe67165ae8afc9a98d8c9
[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" "2e6d4eb2a06faa963c3b8b4e052e0f0ce291465ed5bfe67165ae8afc9a98d8c9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling cc v1.0.59
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling ucd-util v0.1.8
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling termcolor v1.1.0
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling bindgen v0.36.1
[INFO] [stderr]    Compiling utf8-ranges v1.0.4
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling derive_builder v0.5.1
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking hashbrown v0.9.0
[INFO] [stderr]    Compiling proc-macro2 v0.3.5
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]    Compiling aho-corasick v0.7.13
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling clang-sys v0.22.0
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling which v1.0.5
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling nom v3.2.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling derive_builder_core v0.2.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling cexpr v0.2.3
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]    Compiling xgboost-sys v0.1.2
[INFO] [stderr]     Checking xgboost v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/booster.rs:181:29
[INFO] [stdout]     |
[INFO] [stdout] 181 |                         let mut eval_results = dmat_eval_results.entry(eval_name.to_string())
[INFO] [stdout]     |                             ----^^^^^^^^^^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/booster.rs:191:29
[INFO] [stdout]     |
[INFO] [stdout] 191 |                         let mut dmat_results = eval_dmat_results.entry(eval_name).or_insert_with(BTreeMap::new);
[INFO] [stdout]     |                             ----^^^^^^^^^^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/booster.rs:551:25
[INFO] [stdout]     |
[INFO] [stdout] 551 |                     let mut metric_map = result.entry(evname.to_string()).or_insert_with(IndexMap::new);
[INFO] [stdout]     |                         ----^^^^^^^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/booster.rs:181:29
[INFO] [stdout]     |
[INFO] [stdout] 181 |                         let mut eval_results = dmat_eval_results.entry(eval_name.to_string())
[INFO] [stdout]     |                             ----^^^^^^^^^^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/booster.rs:191:29
[INFO] [stdout]     |
[INFO] [stdout] 191 |                         let mut dmat_results = eval_dmat_results.entry(eval_name).or_insert_with(BTreeMap::new);
[INFO] [stdout]     |                             ----^^^^^^^^^^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/booster.rs:551:25
[INFO] [stdout]     |
[INFO] [stdout] 551 |                     let mut metric_map = result.entry(evname.to_string()).or_insert_with(IndexMap::new);
[INFO] [stdout]     |                         ----^^^^^^^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/booster.rs:715:13
[INFO] [stdout]     |
[INFO] [stdout] 715 |         let mut dir = tempfile::tempdir().expect("create temp dir");
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6m 30s
[INFO] running `Command { std: "docker" "inspect" "2e6d4eb2a06faa963c3b8b4e052e0f0ce291465ed5bfe67165ae8afc9a98d8c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e6d4eb2a06faa963c3b8b4e052e0f0ce291465ed5bfe67165ae8afc9a98d8c9", kill_on_drop: false }`
[INFO] [stdout] 2e6d4eb2a06faa963c3b8b4e052e0f0ce291465ed5bfe67165ae8afc9a98d8c9
