[INFO] cloning repository https://github.com/wistrandj/rust-zk
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wistrandj/rust-zk" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwistrandj%2Frust-zk", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwistrandj%2Frust-zk'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 594332d3b6c860519676cb3f7a34cf759d99dc88
[INFO] testing wistrandj/rust-zk against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwistrandj%2Frust-zk" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wistrandj/rust-zk 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 git repo https://github.com/wistrandj/rust-zk
[INFO] finished tweaking git repo https://github.com/wistrandj/rust-zk
[INFO] tweaked toml for git repo https://github.com/wistrandj/rust-zk written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/wistrandj/rust-zk already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b8a8b1039b09c39e55d725e4a45c5afdee2a6da33ea8a832d60d3ffcf1764df7
[INFO] running `Command { std: "docker" "start" "-a" "b8a8b1039b09c39e55d725e4a45c5afdee2a6da33ea8a832d60d3ffcf1764df7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b8a8b1039b09c39e55d725e4a45c5afdee2a6da33ea8a832d60d3ffcf1764df7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8a8b1039b09c39e55d725e4a45c5afdee2a6da33ea8a832d60d3ffcf1764df7", kill_on_drop: false }`
[INFO] [stdout] b8a8b1039b09c39e55d725e4a45c5afdee2a6da33ea8a832d60d3ffcf1764df7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 1f7535577eb7fc71f0f779b0e15ac5aacd6051ba7319885ffbf3bf8d60f47cd5
[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" "1f7535577eb7fc71f0f779b0e15ac5aacd6051ba7319885ffbf3bf8d60f47cd5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling ahash v0.4.6
[INFO] [stderr]    Compiling smallvec v1.4.2
[INFO] [stderr]    Compiling libsqlite3-sys v0.20.1
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling hashlink v0.6.0
[INFO] [stderr]    Compiling rusqlite v0.24.1
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling rust-zk v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `params`
[INFO] [stdout]  --> src/control/content.rs:4:28
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rusqlite::{Connection, params};
[INFO] [stdout]   |                            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/control/content.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::hash`
[INFO] [stdout]   --> src/control/content.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::hash;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `params`
[INFO] [stdout]  --> src/control/tag.rs:1:28
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rusqlite::{Connection, params};
[INFO] [stdout]   |                            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::card::Face`
[INFO] [stdout]  --> src/model/blob.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::card::Face;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> src/model/schema.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn`
[INFO] [stdout]   --> src/control/content.rs:12:23
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn all_timeline_cards(conn: &Connection) -> Vec<Meta> {
[INFO] [stdout]    |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_conn`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `folder`
[INFO] [stdout]   --> src/control/content.rs:16:19
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn all_open_cards(folder: &Path) -> Vec<Meta> {
[INFO] [stdout]    |                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_folder`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file`
[INFO] [stdout]   --> src/control/content.rs:20:22
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn timestamp_of_file(file: &Path) -> Timestamp {
[INFO] [stdout]    |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]    --> src/control/tag.rs:102:28
[INFO] [stdout]     |
[INFO] [stdout] 102 |     pub fn call_once(self, args: ()) -> Result<(), &'static str> {
[INFO] [stdout]     |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/model/carddb.rs:28:16
[INFO] [stdout]    |
[INFO] [stdout] 28 |     if let Err(msg) = success {
[INFO] [stdout]    |                ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `timeline_file`
[INFO] [stdout]   --> src/zkinit.rs:70:15
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub fn zkinit(timeline_file: &PathBuf, args: &varg::Args) {
[INFO] [stdout]    |               ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_timeline_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]   --> src/card/meta.rs:26:18
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn eq(&self, other: &Timestamp) -> bool {
[INFO] [stdout]    |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]   --> src/card/meta.rs:35:27
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn partial_cmp(&self, other: &Timestamp) -> Option<Ordering> {
[INFO] [stdout]    |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]  --> src/feature.rs:8:23
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn enable_feature(name: &str, conn: &mut Connection, feature: &dyn Feature) {
[INFO] [stdout]   |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> src/feature.rs:12:26
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn has_feature_table(name: &str, conn: &Connection) -> bool {
[INFO] [stdout]    |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> src/feature.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn has(name: &str, conn: &Connection) -> bool {
[INFO] [stdout]    |            ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `set`
[INFO] [stdout]   --> src/hash.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 92 |     let set = b"0123456789abcdef";
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_set`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hi`
[INFO] [stdout]   --> src/hash.rs:90:17
[INFO] [stdout]    |
[INFO] [stdout] 90 | fn hexcharvalue(hi: u8, lo: u8) -> u8 {
[INFO] [stdout]    |                 ^^ help: if this is intentional, prefix it with an underscore: `_hi`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lo`
[INFO] [stdout]   --> src/hash.rs:90:25
[INFO] [stdout]    |
[INFO] [stdout] 90 | fn hexcharvalue(hi: u8, lo: u8) -> u8 {
[INFO] [stdout]    |                         ^^ help: if this is intentional, prefix it with an underscore: `_lo`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `slice`
[INFO] [stdout]   --> src/hash.rs:65:21
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn from_str(slice: &str) -> Hash {
[INFO] [stdout]    |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_slice`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `timeline`
[INFO] [stdout]   --> src/zktag.rs:88:14
[INFO] [stdout]    |
[INFO] [stdout] 88 | pub fn zktag(timeline: &PathBuf, args: &Args) -> Result<(), &'static str> {
[INFO] [stdout]    |              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_timeline`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/model/tag.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let mut stmt = self.connection.prepare(sql);
[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: function is never used: `all_timeline_cards`
[INFO] [stdout]   --> src/control/content.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn all_timeline_cards(conn: &Connection) -> Vec<Meta> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `all_open_cards`
[INFO] [stdout]   --> src/control/content.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn all_open_cards(folder: &Path) -> Vec<Meta> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `timestamp_of_file`
[INFO] [stdout]   --> src/control/content.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn timestamp_of_file(file: &Path) -> Timestamp {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `modified_open_cards`
[INFO] [stdout]   --> src/control/content.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn modified_open_cards(folder: &Path, conn: &Connection) -> Vec<Meta> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `CreateTagHistoryBatch`
[INFO] [stdout]   --> src/control/tag.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct CreateTagHistoryBatch<'a> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `DropLatestTagHistoryBatch`
[INFO] [stdout]   --> src/control/tag.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct DropLatestTagHistoryBatch<'a> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/control/tag.rs:147:12
[INFO] [stdout]     |
[INFO] [stdout] 147 |     pub fn new(connection: &'a Connection) -> Result<CreateTagHistoryBatch<'a>, &'static str> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `call_once`
[INFO] [stdout]    --> src/control/tag.rs:157:12
[INFO] [stdout]     |
[INFO] [stdout] 157 |     pub fn call_once(&self) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/control/tag.rs:163:12
[INFO] [stdout]     |
[INFO] [stdout] 163 |     pub fn new(connection: &'a Connection) -> Result<DropLatestTagHistoryBatch<'a>, &'static str> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `call_once`
[INFO] [stdout]    --> src/control/tag.rs:172:12
[INFO] [stdout]     |
[INFO] [stdout] 172 |     pub fn call_once(self) -> Result<(), &'static str> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `load`
[INFO] [stdout]   --> src/model/blob.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn load(conn: &Connection, sha256: hash::Hash) -> Option<Vec<u8>> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cards`
[INFO] [stdout]  --> src/model/carddb.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn cards(conn: &mut Connection) -> Vec<Face> {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `next_major_card`
[INFO] [stdout]   --> src/model/cardfolder.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn next_major_card(folder: &PathBuf) -> Face {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `list_cards`
[INFO] [stdout]   --> src/model/cardfolder.rs:87:4
[INFO] [stdout]    |
[INFO] [stdout] 87 | fn list_cards(path: &Path) -> Vec<Face> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `latest_batch_id_or_zero`
[INFO] [stdout]    --> src/model/tag.rs:158:12
[INFO] [stdout]     |
[INFO] [stdout] 158 |     pub fn latest_batch_id_or_zero(&self) -> Result<usize, &'static str> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_tag_to_a_batch_history`
[INFO] [stdout]    --> src/model/tag.rs:175:12
[INFO] [stdout]     |
[INFO] [stdout] 175 |     pub fn insert_tag_to_a_batch_history(&self, batch_id: usize, tag_name: &str, major_card_number: usize) -> Result<(), &'static str> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `delete_card_tags_in_a_batch`
[INFO] [stdout]    --> src/model/tag.rs:186:12
[INFO] [stdout]     |
[INFO] [stdout] 186 |     pub fn delete_card_tags_in_a_batch(&self, batch_id: usize) -> Result<(), &'static str> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `delete_batch_from_history`
[INFO] [stdout]    --> src/model/tag.rs:197:12
[INFO] [stdout]     |
[INFO] [stdout] 197 |     pub fn delete_batch_from_history(&self, batch_id: usize) -> Result<(), &'static str> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_major`
[INFO] [stdout]    --> src/card/face.rs:120:12
[INFO] [stdout]     |
[INFO] [stdout] 120 |     pub fn is_major(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `has`
[INFO] [stdout]   --> src/feature.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn has(name: &str, conn: &Connection) -> bool {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_text`
[INFO] [stdout]   --> src/hash.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn from_text(slice: &str) -> Hash {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_str`
[INFO] [stdout]   --> src/hash.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn from_str(slice: &str) -> Hash {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hexcharvalue`
[INFO] [stdout]   --> src/hash.rs:90:4
[INFO] [stdout]    |
[INFO] [stdout] 90 | fn hexcharvalue(hi: u8, lo: u8) -> u8 {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hexslice`
[INFO] [stdout]    --> src/hash.rs:106:4
[INFO] [stdout]     |
[INFO] [stdout] 106 | fn hexslice(slice: &str) -> [u8; Sha256_size] {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:35:21
[INFO] [stdout]    |
[INFO] [stdout] 35 |                     zktag::zktag(timeline_file, &args);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `Sha256_size` should have an upper case name
[INFO] [stdout]  --> src/hash.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const Sha256_size: usize = 32;
[INFO] [stdout]   |       ^^^^^^^^^^^ help: convert the identifier to upper case: `SHA256_SIZE`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/zktag.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         cmd.call_once(());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 50 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.23s
[INFO] running `Command { std: "docker" "inspect" "1f7535577eb7fc71f0f779b0e15ac5aacd6051ba7319885ffbf3bf8d60f47cd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f7535577eb7fc71f0f779b0e15ac5aacd6051ba7319885ffbf3bf8d60f47cd5", kill_on_drop: false }`
[INFO] [stdout] 1f7535577eb7fc71f0f779b0e15ac5aacd6051ba7319885ffbf3bf8d60f47cd5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 2763dd1466f67dd0e92b7a9f3b5c1982d5f8ea50175e245688d6273f9f3981f6
[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" "2763dd1466f67dd0e92b7a9f3b5c1982d5f8ea50175e245688d6273f9f3981f6", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-zk v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `params`
[INFO] [stdout]  --> src/control/content.rs:4:28
[INFO] [stdout]   |
[INFO] [stdout] 4 | use rusqlite::{Connection, params};
[INFO] [stdout]   |                            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/control/content.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::hash`
[INFO] [stdout]   --> src/control/content.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::hash;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `params`
[INFO] [stdout]  --> src/control/tag.rs:1:28
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rusqlite::{Connection, params};
[INFO] [stdout]   |                            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::card::Face`
[INFO] [stdout]  --> src/model/blob.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::card::Face;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> src/model/schema.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `conn`
[INFO] [stdout]   --> src/control/content.rs:12:23
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn all_timeline_cards(conn: &Connection) -> Vec<Meta> {
[INFO] [stdout]    |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_conn`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `folder`
[INFO] [stdout]   --> src/control/content.rs:16:19
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn all_open_cards(folder: &Path) -> Vec<Meta> {
[INFO] [stdout]    |                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_folder`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file`
[INFO] [stdout]   --> src/control/content.rs:20:22
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn timestamp_of_file(file: &Path) -> Timestamp {
[INFO] [stdout]    |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]    --> src/control/tag.rs:102:28
[INFO] [stdout]     |
[INFO] [stdout] 102 |     pub fn call_once(self, args: ()) -> Result<(), &'static str> {
[INFO] [stdout]     |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/model/carddb.rs:28:16
[INFO] [stdout]    |
[INFO] [stdout] 28 |     if let Err(msg) = success {
[INFO] [stdout]    |                ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `timeline_file`
[INFO] [stdout]   --> src/zkinit.rs:70:15
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub fn zkinit(timeline_file: &PathBuf, args: &varg::Args) {
[INFO] [stdout]    |               ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_timeline_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]   --> src/card/meta.rs:26:18
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn eq(&self, other: &Timestamp) -> bool {
[INFO] [stdout]    |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `other`
[INFO] [stdout]   --> src/card/meta.rs:35:27
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn partial_cmp(&self, other: &Timestamp) -> Option<Ordering> {
[INFO] [stdout]    |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]  --> src/feature.rs:8:23
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn enable_feature(name: &str, conn: &mut Connection, feature: &dyn Feature) {
[INFO] [stdout]   |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> src/feature.rs:12:26
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn has_feature_table(name: &str, conn: &Connection) -> bool {
[INFO] [stdout]    |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> src/feature.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn has(name: &str, conn: &Connection) -> bool {
[INFO] [stdout]    |            ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `set`
[INFO] [stdout]   --> src/hash.rs:92:9
[INFO] [stdout]    |
[INFO] [stdout] 92 |     let set = b"0123456789abcdef";
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_set`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hi`
[INFO] [stdout]   --> src/hash.rs:90:17
[INFO] [stdout]    |
[INFO] [stdout] 90 | fn hexcharvalue(hi: u8, lo: u8) -> u8 {
[INFO] [stdout]    |                 ^^ help: if this is intentional, prefix it with an underscore: `_hi`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lo`
[INFO] [stdout]   --> src/hash.rs:90:25
[INFO] [stdout]    |
[INFO] [stdout] 90 | fn hexcharvalue(hi: u8, lo: u8) -> u8 {
[INFO] [stdout]    |                         ^^ help: if this is intentional, prefix it with an underscore: `_lo`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `slice`
[INFO] [stdout]   --> src/hash.rs:65:21
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn from_str(slice: &str) -> Hash {
[INFO] [stdout]    |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_slice`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `timeline`
[INFO] [stdout]   --> src/zktag.rs:88:14
[INFO] [stdout]    |
[INFO] [stdout] 88 | pub fn zktag(timeline: &PathBuf, args: &Args) -> Result<(), &'static str> {
[INFO] [stdout]    |              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_timeline`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/varg.rs:112:13
[INFO] [stdout]     |
[INFO] [stdout] 112 |         let mut a1: Vec<String> = vec![];
[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/varg.rs:113:13
[INFO] [stdout]     |
[INFO] [stdout] 113 |         let mut a2: Vec<String> = vec!["--timeline"].iter().map(|s| s.to_string()).collect();
[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/varg.rs:114:13
[INFO] [stdout]     |
[INFO] [stdout] 114 |         let mut a3: Vec<String> = vec!["./timeline.db"].iter().map(|s| s.to_string()).collect();
[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/varg.rs:115:13
[INFO] [stdout]     |
[INFO] [stdout] 115 |         let mut a4: Vec<String> = vec!["first", "--timeline"].iter().map(|s| s.to_string()).collect();
[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/model/tag.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let mut stmt = self.connection.prepare(sql);
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `all_timeline_cards`
[INFO] [stdout]   --> src/control/content.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn all_timeline_cards(conn: &Connection) -> Vec<Meta> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `all_open_cards`
[INFO] [stdout]   --> src/control/content.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn all_open_cards(folder: &Path) -> Vec<Meta> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `timestamp_of_file`
[INFO] [stdout]   --> src/control/content.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn timestamp_of_file(file: &Path) -> Timestamp {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `modified_open_cards`
[INFO] [stdout]   --> src/control/content.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn modified_open_cards(folder: &Path, conn: &Connection) -> Vec<Meta> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `CreateTagHistoryBatch`
[INFO] [stdout]   --> src/control/tag.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct CreateTagHistoryBatch<'a> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `DropLatestTagHistoryBatch`
[INFO] [stdout]   --> src/control/tag.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct DropLatestTagHistoryBatch<'a> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/control/tag.rs:147:12
[INFO] [stdout]     |
[INFO] [stdout] 147 |     pub fn new(connection: &'a Connection) -> Result<CreateTagHistoryBatch<'a>, &'static str> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `call_once`
[INFO] [stdout]    --> src/control/tag.rs:157:12
[INFO] [stdout]     |
[INFO] [stdout] 157 |     pub fn call_once(&self) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/control/tag.rs:163:12
[INFO] [stdout]     |
[INFO] [stdout] 163 |     pub fn new(connection: &'a Connection) -> Result<DropLatestTagHistoryBatch<'a>, &'static str> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `call_once`
[INFO] [stdout]    --> src/control/tag.rs:172:12
[INFO] [stdout]     |
[INFO] [stdout] 172 |     pub fn call_once(self) -> Result<(), &'static str> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `load`
[INFO] [stdout]   --> src/model/blob.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn load(conn: &Connection, sha256: hash::Hash) -> Option<Vec<u8>> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `cards`
[INFO] [stdout]  --> src/model/carddb.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn cards(conn: &mut Connection) -> Vec<Face> {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `next_major_card`
[INFO] [stdout]   --> src/model/cardfolder.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn next_major_card(folder: &PathBuf) -> Face {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `list_cards`
[INFO] [stdout]   --> src/model/cardfolder.rs:87:4
[INFO] [stdout]    |
[INFO] [stdout] 87 | fn list_cards(path: &Path) -> Vec<Face> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `latest_batch_id_or_zero`
[INFO] [stdout]    --> src/model/tag.rs:158:12
[INFO] [stdout]     |
[INFO] [stdout] 158 |     pub fn latest_batch_id_or_zero(&self) -> Result<usize, &'static str> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_tag_to_a_batch_history`
[INFO] [stdout]    --> src/model/tag.rs:175:12
[INFO] [stdout]     |
[INFO] [stdout] 175 |     pub fn insert_tag_to_a_batch_history(&self, batch_id: usize, tag_name: &str, major_card_number: usize) -> Result<(), &'static str> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `delete_card_tags_in_a_batch`
[INFO] [stdout]    --> src/model/tag.rs:186:12
[INFO] [stdout]     |
[INFO] [stdout] 186 |     pub fn delete_card_tags_in_a_batch(&self, batch_id: usize) -> Result<(), &'static str> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `delete_batch_from_history`
[INFO] [stdout]    --> src/model/tag.rs:197:12
[INFO] [stdout]     |
[INFO] [stdout] 197 |     pub fn delete_batch_from_history(&self, batch_id: usize) -> Result<(), &'static str> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_major`
[INFO] [stdout]    --> src/card/face.rs:120:12
[INFO] [stdout]     |
[INFO] [stdout] 120 |     pub fn is_major(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `has`
[INFO] [stdout]   --> src/feature.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn has(name: &str, conn: &Connection) -> bool {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_text`
[INFO] [stdout]   --> src/hash.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn from_text(slice: &str) -> Hash {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_str`
[INFO] [stdout]   --> src/hash.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub fn from_str(slice: &str) -> Hash {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hexcharvalue`
[INFO] [stdout]   --> src/hash.rs:90:4
[INFO] [stdout]    |
[INFO] [stdout] 90 | fn hexcharvalue(hi: u8, lo: u8) -> u8 {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `hexslice`
[INFO] [stdout]    --> src/hash.rs:106:4
[INFO] [stdout]     |
[INFO] [stdout] 106 | fn hexslice(slice: &str) -> [u8; Sha256_size] {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:35:21
[INFO] [stdout]    |
[INFO] [stdout] 35 |                     zktag::zktag(timeline_file, &args);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `Sha256_size` should have an upper case name
[INFO] [stdout]  --> src/hash.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const Sha256_size: usize = 32;
[INFO] [stdout]   |       ^^^^^^^^^^^ help: convert the identifier to upper case: `SHA256_SIZE`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/zktag.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         cmd.call_once(());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 54 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.43s
[INFO] running `Command { std: "docker" "inspect" "2763dd1466f67dd0e92b7a9f3b5c1982d5f8ea50175e245688d6273f9f3981f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2763dd1466f67dd0e92b7a9f3b5c1982d5f8ea50175e245688d6273f9f3981f6", kill_on_drop: false }`
[INFO] [stdout] 2763dd1466f67dd0e92b7a9f3b5c1982d5f8ea50175e245688d6273f9f3981f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c407c3c575036b23b4cd02dff0e6176fa44dfc4d4afc66af831b783c13823320
[INFO] running `Command { std: "docker" "start" "-a" "c407c3c575036b23b4cd02dff0e6176fa44dfc4d4afc66af831b783c13823320", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused import: `params`
[INFO] [stdout] running 8 tests
[INFO] [stderr]  --> src/control/content.rs:4:28
[INFO] [stderr]   |
[INFO] [stderr] 4 | use rusqlite::{Connection, params};
[INFO] [stderr]   |                            ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]  --> src/control/content.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::fs;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::hash`
[INFO] [stderr]   --> src/control/content.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use crate::hash;
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `params`
[INFO] [stderr]  --> src/control/tag.rs:1:28
[INFO] [stderr]   |
[INFO] [stderr] 1 | use rusqlite::{Connection, params};
[INFO] [stderr]   |                            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::card::Face`
[INFO] [stderr]  --> src/model/blob.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::card::Face;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashSet`
[INFO] [stderr]  --> src/model/schema.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::collections::HashSet;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `conn`
[INFO] [stderr]   --> src/control/content.rs:12:23
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn all_timeline_cards(conn: &Connection) -> Vec<Meta> {
[INFO] [stderr]    |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_conn`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `folder`
[INFO] [stderr]   --> src/control/content.rs:16:19
[INFO] [stderr]    |
[INFO] [stderr] 16 | fn all_open_cards(folder: &Path) -> Vec<Meta> {
[INFO] [stderr]    |                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_folder`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file`
[INFO] [stderr]   --> src/control/content.rs:20:22
[INFO] [stderr]    |
[INFO] [stderr] 20 | fn timestamp_of_file(file: &Path) -> Timestamp {
[INFO] [stderr]    |                      ^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]    --> src/control/tag.rs:102:28
[INFO] [stderr]     |
[INFO] [stderr] 102 |     pub fn call_once(self, args: ()) -> Result<(), &'static str> {
[INFO] [stderr]     |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `msg`
[INFO] [stderr]   --> src/model/carddb.rs:28:16
[INFO] [stderr]    |
[INFO] [stderr] 28 |     if let Err(msg) = success {
[INFO] [stderr]    |                ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `timeline_file`
[INFO] [stderr]   --> src/zkinit.rs:70:15
[INFO] [stderr]    |
[INFO] [stderr] 70 | pub fn zkinit(timeline_file: &PathBuf, args: &varg::Args) {
[INFO] [stderr]    |               ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_timeline_file`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `other`
[INFO] [stderr]   --> src/card/meta.rs:26:18
[INFO] [stderr]    |
[INFO] [stderr] 26 |     fn eq(&self, other: &Timestamp) -> bool {
[INFO] [stderr]    |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `other`
[INFO] [stderr]   --> src/card/meta.rs:35:27
[INFO] [stderr]    |
[INFO] [stderr] 35 |     fn partial_cmp(&self, other: &Timestamp) -> Option<Ordering> {
[INFO] [stderr]    |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]  --> src/feature.rs:8:23
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn enable_feature(name: &str, conn: &mut Connection, feature: &dyn Feature) {
[INFO] [stderr]   |                       ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]   --> src/feature.rs:12:26
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub fn has_feature_table(name: &str, conn: &Connection) -> bool {
[INFO] [stderr]    |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]   --> src/feature.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 29 | pub fn has(name: &str, conn: &Connection) -> bool {
[INFO] [stderr]    |            ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `set`
[INFO] [stderr]   --> src/hash.rs:92:9
[INFO] [stderr]    |
[INFO] [stderr] 92 |     let set = b"0123456789abcdef";
[INFO] [stderr]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_set`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hi`
[INFO] [stderr]   --> src/hash.rs:90:17
[INFO] [stderr]    |
[INFO] [stderr] 90 | fn hexcharvalue(hi: u8, lo: u8) -> u8 {
[INFO] [stderr]    |                 ^^ help: if this is intentional, prefix it with an underscore: `_hi`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lo`
[INFO] [stderr]   --> src/hash.rs:90:25
[INFO] [stderr]    |
[INFO] [stderr] 90 | fn hexcharvalue(hi: u8, lo: u8) -> u8 {
[INFO] [stderr]    |                         ^^ help: if this is intentional, prefix it with an underscore: `_lo`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `slice`
[INFO] [stderr]   --> src/hash.rs:65:21
[INFO] [stderr]    |
[INFO] [stderr] 65 |     pub fn from_str(slice: &str) -> Hash {
[INFO] [stderr]    |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_slice`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `timeline`
[INFO] [stderr]   --> src/zktag.rs:88:14
[INFO] [stderr]    |
[INFO] [stderr] 88 | pub fn zktag(timeline: &PathBuf, args: &Args) -> Result<(), &'static str> {
[INFO] [stderr]    |              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_timeline`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/varg.rs:112:13
[INFO] [stderr]     |
[INFO] [stderr] 112 |         let mut a1: Vec<String> = vec![];
[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: variable does not need to be mutable
[INFO] [stderr]    --> src/varg.rs:113:13
[INFO] [stderr]     |
[INFO] [stderr] 113 |         let mut a2: Vec<String> = vec!["--timeline"].iter().map(|s| s.to_string()).collect();
[INFO] [stderr]     |             ----^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/varg.rs:114:13
[INFO] [stderr]     |
[INFO] [stderr] 114 |         let mut a3: Vec<String> = vec!["./timeline.db"].iter().map(|s| s.to_string()).collect();
[INFO] [stderr]     |             ----^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/varg.rs:115:13
[INFO] [stderr]     |
[INFO] [stderr] 115 |         let mut a4: Vec<String> = vec!["first", "--timeline"].iter().map(|s| s.to_string()).collect();
[INFO] [stderr]     |             ----^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/model/tag.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 |         let mut stmt = self.connection.prepare(sql);
[INFO] [stderr]    |             ----^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `all_timeline_cards`
[INFO] [stderr]   --> src/control/content.rs:12:4
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn all_timeline_cards(conn: &Connection) -> Vec<Meta> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `all_open_cards`
[INFO] [stderr]   --> src/control/content.rs:16:4
[INFO] [stderr]    |
[INFO] [stderr] 16 | fn all_open_cards(folder: &Path) -> Vec<Meta> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `timestamp_of_file`
[INFO] [stderr]   --> src/control/content.rs:20:4
[INFO] [stderr]    |
[INFO] [stderr] 20 | fn timestamp_of_file(file: &Path) -> Timestamp {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `modified_open_cards`
[INFO] [stderr]   --> src/control/content.rs:25:4
[INFO] [stderr]    |
[INFO] [stderr] 25 | fn modified_open_cards(folder: &Path, conn: &Connection) -> Vec<Meta> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `CreateTagHistoryBatch`
[INFO] [stderr]   --> src/control/tag.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 29 | pub struct CreateTagHistoryBatch<'a> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `DropLatestTagHistoryBatch`
[INFO] [stderr]   --> src/control/tag.rs:34:12
[INFO] [stderr]    |
[INFO] [stderr] 34 | pub struct DropLatestTagHistoryBatch<'a> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]    --> src/control/tag.rs:147:12
[INFO] [stderr]     |
[INFO] [stderr] 147 |     pub fn new(connection: &'a Connection) -> Result<CreateTagHistoryBatch<'a>, &'static str> {
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `call_once`
[INFO] [stderr]    --> src/control/tag.rs:157:12
[INFO] [stderr]     |
[INFO] [stderr] 157 |     pub fn call_once(&self) {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]    --> src/control/tag.rs:163:12
[INFO] [stderr]     |
[INFO] [stderr] 163 |     pub fn new(connection: &'a Connection) -> Result<DropLatestTagHistoryBatch<'a>, &'static str> {
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `call_once`
[INFO] [stderr]    --> src/control/tag.rs:172:12
[INFO] [stderr]     |
[INFO] [stderr] 172 |     pub fn call_once(self) -> Result<(), &'static str> {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `load`
[INFO] [stderr]   --> src/model/blob.rs:40:8
[INFO] [stderr]    |
[INFO] [stderr] 40 | pub fn load(conn: &Connection, sha256: hash::Hash) -> Option<Vec<u8>> {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `cards`
[INFO] [stderr]  --> src/model/carddb.rs:6:4
[INFO] [stderr]   |
[INFO] [stderr] 6 | fn cards(conn: &mut Connection) -> Vec<Face> {
[INFO] [stderr]   |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `next_major_card`
[INFO] [stderr]   --> src/model/cardfolder.rs:62:8
[INFO] [stderr]    |
[INFO] [stderr] 62 | pub fn next_major_card(folder: &PathBuf) -> Face {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `list_cards`
[INFO] [stderr]   --> src/model/cardfolder.rs:87:4
[INFO] [stderr]    |
[INFO] [stderr] 87 | fn list_cards(path: &Path) -> Vec<Face> {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `latest_batch_id_or_zero`
[INFO] [stderr]    --> src/model/tag.rs:158:12
[INFO] [stderr]     |
[INFO] [stderr] 158 |     pub fn latest_batch_id_or_zero(&self) -> Result<usize, &'static str> {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `insert_tag_to_a_batch_history`
[INFO] [stderr]    --> src/model/tag.rs:175:12
[INFO] [stderr]     |
[INFO] [stderr] 175 |     pub fn insert_tag_to_a_batch_history(&self, batch_id: usize, tag_name: &str, major_card_number: usize) -> Result<(), &'static str> {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `delete_card_tags_in_a_batch`
[INFO] [stderr]    --> src/model/tag.rs:186:12
[INFO] [stderr]     |
[INFO] [stderr] 186 |     pub fn delete_card_tags_in_a_batch(&self, batch_id: usize) -> Result<(), &'static str> {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `delete_batch_from_history`
[INFO] [stderr]    --> src/model/tag.rs:197:12
[INFO] [stderr]     |
[INFO] [stderr] 197 |     pub fn delete_batch_from_history(&self, batch_id: usize) -> Result<(), &'static str> {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_major`
[INFO] [stderr]    --> src/card/face.rs:120:12
[INFO] [stderr]     |
[INFO] [stderr] 120 |     pub fn is_major(&self) -> bool {
[INFO] [stderr]     |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `has`
[INFO] [stderr]   --> src/feature.rs:29:8
[INFO] [stderr]    |
[INFO] [stderr] 29 | pub fn has(name: &str, conn: &Connection) -> bool {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `from_text`
[INFO] [stderr]   --> src/hash.rs:25:12
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn from_text(slice: &str) -> Hash {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `from_str`
[INFO] [stderr]   --> src/hash.rs:65:12
[INFO] [stderr]    |
[INFO] [stderr] 65 |     pub fn from_str(slice: &str) -> Hash {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `hexcharvalue`
[INFO] [stderr]   --> src/hash.rs:90:4
[INFO] [stderr]    |
[INFO] [stderr] 90 | fn hexcharvalue(hi: u8, lo: u8) -> u8 {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `hexslice`
[INFO] [stderr]    --> src/hash.rs:106:4
[INFO] [stderr]     |
[INFO] [stderr] 106 | fn hexslice(slice: &str) -> [u8; Sha256_size] {
[INFO] [stderr]     |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/main.rs:35:21
[INFO] [stderr]    |
[INFO] [stderr] 35 |                     zktag::zktag(timeline_file, &args);
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: constant `Sha256_size` should have an upper case name
[INFO] [stderr]  --> src/hash.rs:8:7
[INFO] [stderr]   |
[INFO] [stderr] 8 | const Sha256_size: usize = 32;
[INFO] [stderr]   |       ^^^^^^^^^^^ help: convert the identifier to upper case: `SHA256_SIZE`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/zktag.rs:41:9
[INFO] [stderr]    |
[INFO] [stderr] 41 |         cmd.call_once(());
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-zk` (bin "zk" test) generated 54 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/zk-d4c51361ca1497fd)
[INFO] [stdout] test card::face::test::test_create ... ok
[INFO] [stdout] test card::face::test::test_negative ... ok
[INFO] [stdout] test card::face::test::test_number ... ok
[INFO] [stdout] test varg::test1::test_argument_read ... ok
[INFO] [stdout] test varg::test::test_negative ... ok
[INFO] [stdout] test varg::test::test_positive1 ... ok
[INFO] [stdout] test varg::test1::test_no_timeline ... ok
[INFO] [stderr] error: test failed, to rerun pass '--bin zk'
[INFO] [stdout] test card::face::test::test_location_in ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- card::face::test::test_location_in stdout ----
[INFO] [stdout] thread 'card::face::test::test_location_in' panicked at 'assertion failed: `(left == right)`
[INFO] [stdout]   left: `"./foo/bar/123a"`,
[INFO] [stdout]  right: `"./foo/bar/124a"`', src/card/face.rs:230:9
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x558635f85440 - std::backtrace_rs::backtrace::libunwind::trace::ha0ad43e8a952bfe7
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stdout]    1:     0x558635f85440 - std::backtrace_rs::backtrace::trace_unsynchronized::h6830419c0c4130dc
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x558635f85440 - std::sys_common::backtrace::_print_fmt::h8f3516631ffa1ef5
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stdout]    3:     0x558635f85440 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::he1640d5f0d93f618
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stdout]    4:     0x558635fa7c1c - core::fmt::write::h88012e1f01caeebf
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/core/src/fmt/mod.rs:1115:17
[INFO] [stdout]    5:     0x558635f824c5 - std::io::Write::write_fmt::h7728c39ea5632753
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/io/mod.rs:1665:15
[INFO] [stdout]    6:     0x558635f875cb - std::sys_common::backtrace::_print::ha1f00492f406a015
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stdout]    7:     0x558635f875cb - std::sys_common::backtrace::print::hd54561b13feb6af3
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stdout]    8:     0x558635f875cb - std::panicking::default_hook::{{closure}}::h84fe124cd0864662
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:208:50
[INFO] [stdout]    9:     0x558635f870dc - std::panicking::default_hook::h5a8e74a76ce290a7
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:222:9
[INFO] [stdout]   10:     0x558635f87c94 - std::panicking::rust_panic_with_hook::h67c812a4fe9d4c91
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:622:17
[INFO] [stdout]   11:     0x558635f87777 - std::panicking::begin_panic_handler::{{closure}}::h33f9c1b96af300d7
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:519:13
[INFO] [stdout]   12:     0x558635f8593c - std::sys_common::backtrace::__rust_end_short_backtrace::h51bae64be5921f0e
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stdout]   13:     0x558635f876d9 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:515:5
[INFO] [stdout]   14:     0x558635f1b431 - core::panicking::panic_fmt::h12a3a3c256485fca
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/core/src/panicking.rs:92:14
[INFO] [stdout]   15:     0x558635fa6538 - core::panicking::assert_failed_inner::hd10540743cd0e11a
[INFO] [stdout]   16:     0x558635f22d0a - core::panicking::assert_failed::hf2a8750d5c4c325d
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/core/src/panicking.rs:117:5
[INFO] [stdout]   17:     0x558635f20ff3 - zk::card::face::test::test_location_in::h250f0d427cf7f81b
[INFO] [stdout]                                at /opt/rustwide/workdir/src/card/face.rs:230:9
[INFO] [stdout]   18:     0x558635f20e0a - zk::card::face::test::test_location_in::{{closure}}::h83a316b9f6268ecd
[INFO] [stdout]                                at /opt/rustwide/workdir/src/card/face.rs:227:5
[INFO] [stdout]   19:     0x558635f222ae - core::ops::function::FnOnce::call_once::h400c9dffd3360a8e
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   20:     0x558635f61283 - core::ops::function::FnOnce::call_once::h5aba9a5d361d6c79
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   21:     0x558635f61283 - test::__rust_begin_short_backtrace::h705bb53b2b1d45e6
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/test/src/lib.rs:578:5
[INFO] [stdout]   22:     0x558635f5fd38 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::ha20f614d7c0b2b6d
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/alloc/src/boxed.rs:1572:9
[INFO] [stdout]   23:     0x558635f5fd38 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hf02f19eeb64ceabd
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panic.rs:347:9
[INFO] [stdout]   24:     0x558635f5fd38 - std::panicking::try::do_call::h4bfab65eb3b4b036
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:401:40
[INFO] [stdout]   25:     0x558635f5fd38 - std::panicking::try::h6613a46a6d2b6f88
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:365:19
[INFO] [stdout]   26:     0x558635f5fd38 - std::panic::catch_unwind::h9f07b17b60991273
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panic.rs:434:14
[INFO] [stdout]   27:     0x558635f5fd38 - test::run_test_in_process::hc38797eecf07854f
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/test/src/lib.rs:601:18
[INFO] [stdout]   28:     0x558635f5fd38 - test::run_test::run_test_inner::{{closure}}::hac209db8bce0fd77
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/test/src/lib.rs:493:39
[INFO] [stdout]   29:     0x558635f2e4cd - test::run_test::run_test_inner::{{closure}}::h4aefdd4b4a423e20
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/test/src/lib.rs:520:37
[INFO] [stdout]   30:     0x558635f2e4cd - std::sys_common::backtrace::__rust_begin_short_backtrace::h652c9e2663704700
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stdout]   31:     0x558635f32ca8 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::hd84fd5e0b5b1f45f
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/thread/mod.rs:476:17
[INFO] [stdout]   32:     0x558635f32ca8 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he23556962a2ae14b
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panic.rs:347:9
[INFO] [stdout]   33:     0x558635f32ca8 - std::panicking::try::do_call::h67d4f93e1fbaa5f9
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:401:40
[INFO] [stdout]   34:     0x558635f32ca8 - std::panicking::try::h396886e678db815e
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:365:19
[INFO] [stdout]   35:     0x558635f32ca8 - std::panic::catch_unwind::hc1d64dcecf0a00e0
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panic.rs:434:14
[INFO] [stdout]   36:     0x558635f32ca8 - std::thread::Builder::spawn_unchecked::{{closure}}::hc2644cf33cb61d8e
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/thread/mod.rs:475:30
[INFO] [stdout]   37:     0x558635f32ca8 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h4473c2c77b66963f
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/core/src/ops/function.rs:227:5
[INFO] [stdout]   38:     0x558635f8c807 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h6bff7798948b1075
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/alloc/src/boxed.rs:1572:9
[INFO] [stdout]   39:     0x558635f8c807 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hc2d25ac38f6b2342
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/alloc/src/boxed.rs:1572:9
[INFO] [stdout]   40:     0x558635f8c807 - std::sys::unix::thread::Thread::new::thread_start::hbba5bc368baac205
[INFO] [stdout]                                at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/sys/unix/thread.rs:74:17
[INFO] [stdout]   41:     0x7fa250f27609 - start_thread
[INFO] [stdout]   42:     0x7fa250cf7293 - clone
[INFO] [stdout]   43:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     card::face::test::test_location_in
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 7 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.08s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c407c3c575036b23b4cd02dff0e6176fa44dfc4d4afc66af831b783c13823320", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c407c3c575036b23b4cd02dff0e6176fa44dfc4d4afc66af831b783c13823320", kill_on_drop: false }`
[INFO] [stdout] c407c3c575036b23b4cd02dff0e6176fa44dfc4d4afc66af831b783c13823320