[INFO] cloning repository https://github.com/Niskarsh/get-student-data
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Niskarsh/get-student-data" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNiskarsh%2Fget-student-data", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNiskarsh%2Fget-student-data'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0f5b19e3b6a3a326a57bd35510f6b83da459854e
[INFO] linting Niskarsh/get-student-data against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNiskarsh%2Fget-student-data" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Niskarsh/get-student-data
[INFO] finished tweaking git repo https://github.com/Niskarsh/get-student-data
[INFO] tweaked toml for git repo https://github.com/Niskarsh/get-student-data written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Niskarsh/get-student-data on toolchain nightly
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Niskarsh/get-student-data already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
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[INFO] [stderr]   Downloaded postgres-types v0.2.6
[INFO] [stderr]   Downloaded tokio-postgres v0.7.10
[INFO] [stderr]   Downloaded serde_derive v1.0.201
[INFO] [stderr]   Downloaded serde v1.0.201
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fb938e8d1f59cc95a6540b68ab5e9898c8dd17845f1395675779c3846393d818
[INFO] running `Command { std: "docker" "start" "-a" "fb938e8d1f59cc95a6540b68ab5e9898c8dd17845f1395675779c3846393d818", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb938e8d1f59cc95a6540b68ab5e9898c8dd17845f1395675779c3846393d818", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb938e8d1f59cc95a6540b68ab5e9898c8dd17845f1395675779c3846393d818", kill_on_drop: false }`
[INFO] [stdout] fb938e8d1f59cc95a6540b68ab5e9898c8dd17845f1395675779c3846393d818
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "clippy" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 98bce5c47981e0195c2175d480324f9e480d6c9fcce1fa21aa0a10391635e856
[INFO] running `Command { std: "docker" "start" "-a" "98bce5c47981e0195c2175d480324f9e480d6c9fcce1fa21aa0a10391635e856", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.154
[INFO] [stderr]    Compiling proc-macro2 v1.0.82
[INFO] [stderr]     Checking subtle v2.5.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]     Checking unicode-normalization v0.1.23
[INFO] [stderr]     Checking finl_unicode v1.2.0
[INFO] [stderr]    Compiling serde v1.0.201
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking phf_shared v0.11.2
[INFO] [stderr]     Checking stringprep v0.1.4
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking md-5 v0.10.6
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[INFO] [stderr]     Checking phf v0.11.2
[INFO] [stderr]     Checking csv-core v0.1.11
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[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking socket2 v0.5.7
[INFO] [stderr]     Checking signal-hook-registry v1.4.2
[INFO] [stderr]    Compiling syn v2.0.61
[INFO] [stderr]     Checking parking_lot v0.12.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking chrono v0.4.38
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking postgres-protocol v0.6.6
[INFO] [stderr]     Checking postgres-types v0.2.6
[INFO] [stderr]     Checking csv v1.3.0
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling async-trait v0.1.80
[INFO] [stderr]     Checking tokio v1.37.0
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking tokio-util v0.7.11
[INFO] [stderr]     Checking tokio-postgres v0.7.10
[INFO] [stderr]     Checking get_student_stats v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/main.rs:86:16
[INFO] [stdout]    |
[INFO] [stdout] 86 |             if !(rows_date_of_admission.len() == 0) {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(rows_date_of_admission.len() != 0)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]    = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/main.rs:94:16
[INFO] [stdout]    |
[INFO] [stdout] 94 |             if !(rows_last_session_date.len() == 0) {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(rows_last_session_date.len() != 0)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/main.rs:108:16
[INFO] [stdout]     |
[INFO] [stdout] 108 |             if !(rows_total_scheduled_sessions.len() == 0) {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(rows_total_scheduled_sessions.len() != 0)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/main.rs:115:16
[INFO] [stdout]     |
[INFO] [stdout] 115 |             if !(rows_total_attended_sessions.len() == 0) {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(rows_total_attended_sessions.len() != 0)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the borrowed expression implements the required traits
[INFO] [stdout]   --> src/main.rs:49:22
[INFO] [stdout]    |
[INFO] [stdout] 49 |       wtr.write_record(&[
[INFO] [stdout]    |  ______________________^
[INFO] [stdout] 50 | |         "Email",
[INFO] [stdout] 51 | |         "Date of Admission",
[INFO] [stdout] 52 | |         "Last Session Date",
[INFO] [stdout] 53 | |         "Total Sessions scheduled",
[INFO] [stdout] 54 | |         "Total Sessions Attended",
[INFO] [stdout] 55 | |     ])?;
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrows_for_generic_args
[INFO] [stdout]    = note: `#[warn(clippy::needless_borrows_for_generic_args)]` on by default
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 49 ~     wtr.write_record([
[INFO] [stdout] 50 +         "Email",
[INFO] [stdout] 51 +         "Date of Admission",
[INFO] [stdout] 52 +         "Last Session Date",
[INFO] [stdout] 53 +         "Total Sessions scheduled",
[INFO] [stdout] 54 +         "Total Sessions Attended",
[INFO] [stdout] 55 ~     ])?;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/main.rs:86:18
[INFO] [stdout]    |
[INFO] [stdout] 86 |             if !(rows_date_of_admission.len() == 0) {
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `rows_date_of_admission.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout]    = note: `#[warn(clippy::len_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/main.rs:94:18
[INFO] [stdout]    |
[INFO] [stdout] 94 |             if !(rows_last_session_date.len() == 0) {
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `rows_last_session_date.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/main.rs:108:18
[INFO] [stdout]     |
[INFO] [stdout] 108 |             if !(rows_total_scheduled_sessions.len() == 0) {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `rows_total_scheduled_sessions.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/main.rs:115:18
[INFO] [stdout]     |
[INFO] [stdout] 115 |             if !(rows_total_attended_sessions.len() == 0) {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `rows_total_attended_sessions.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/main.rs:86:16
[INFO] [stdout]    |
[INFO] [stdout] 86 |             if !(rows_date_of_admission.len() == 0) {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(rows_date_of_admission.len() != 0)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]    = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]   --> src/main.rs:94:16
[INFO] [stdout]    |
[INFO] [stdout] 94 |             if !(rows_last_session_date.len() == 0) {
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(rows_last_session_date.len() != 0)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/main.rs:108:16
[INFO] [stdout]     |
[INFO] [stdout] 108 |             if !(rows_total_scheduled_sessions.len() == 0) {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(rows_total_scheduled_sessions.len() != 0)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/main.rs:115:16
[INFO] [stdout]     |
[INFO] [stdout] 115 |             if !(rows_total_attended_sessions.len() == 0) {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `(rows_total_attended_sessions.len() != 0)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the borrowed expression implements the required traits
[INFO] [stdout]   --> src/main.rs:49:22
[INFO] [stdout]    |
[INFO] [stdout] 49 |       wtr.write_record(&[
[INFO] [stdout]    |  ______________________^
[INFO] [stdout] 50 | |         "Email",
[INFO] [stdout] 51 | |         "Date of Admission",
[INFO] [stdout] 52 | |         "Last Session Date",
[INFO] [stdout] 53 | |         "Total Sessions scheduled",
[INFO] [stdout] 54 | |         "Total Sessions Attended",
[INFO] [stdout] 55 | |     ])?;
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrows_for_generic_args
[INFO] [stdout]    = note: `#[warn(clippy::needless_borrows_for_generic_args)]` on by default
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 49 ~     wtr.write_record([
[INFO] [stdout] 50 +         "Email",
[INFO] [stdout] 51 +         "Date of Admission",
[INFO] [stdout] 52 +         "Last Session Date",
[INFO] [stdout] 53 +         "Total Sessions scheduled",
[INFO] [stdout] 54 +         "Total Sessions Attended",
[INFO] [stdout] 55 ~     ])?;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/main.rs:86:18
[INFO] [stdout]    |
[INFO] [stdout] 86 |             if !(rows_date_of_admission.len() == 0) {
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `rows_date_of_admission.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout]    = note: `#[warn(clippy::len_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/main.rs:94:18
[INFO] [stdout]    |
[INFO] [stdout] 94 |             if !(rows_last_session_date.len() == 0) {
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `rows_last_session_date.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/main.rs:108:18
[INFO] [stdout]     |
[INFO] [stdout] 108 |             if !(rows_total_scheduled_sessions.len() == 0) {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `rows_total_scheduled_sessions.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/main.rs:115:18
[INFO] [stdout]     |
[INFO] [stdout] 115 |             if !(rows_total_attended_sessions.len() == 0) {
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `rows_total_attended_sessions.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 27.97s
[INFO] running `Command { std: "docker" "inspect" "98bce5c47981e0195c2175d480324f9e480d6c9fcce1fa21aa0a10391635e856", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98bce5c47981e0195c2175d480324f9e480d6c9fcce1fa21aa0a10391635e856", kill_on_drop: false }`
[INFO] [stdout] 98bce5c47981e0195c2175d480324f9e480d6c9fcce1fa21aa0a10391635e856