[INFO] updating cached repository https://github.com/dev-chee/beginning_rust [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 77bb479c689cf5590a76bf3b1f67a384126ec8ac [INFO] testing dev-chee/beginning_rust against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdev-chee%2Fbeginning_rust" "/workspace/builds/worker-7/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/dev-chee/beginning_rust on toolchain 28742a1146f10a4f09369baad027a464acb7a766 [INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/dev-chee/beginning_rust [INFO] finished tweaking git repo https://github.com/dev-chee/beginning_rust [INFO] tweaked toml for git repo https://github.com/dev-chee/beginning_rust written to /workspace/builds/worker-7/source/Cargo.toml [INFO] crate git repo https://github.com/dev-chee/beginning_rust already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 4fa955efb00d380ade0032dee4f96e8e502fa75f2ac1836cf162538b5b96544c [INFO] running `"docker" "start" "-a" "4fa955efb00d380ade0032dee4f96e8e502fa75f2ac1836cf162538b5b96544c"` [INFO] [stderr] Compiling beginning_rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unnecessary braces around block return value [INFO] [stderr] --> src/bin/ch04.rs:120:17 [INFO] [stderr] | [INFO] [stderr] 120 | {{ }} [INFO] [stderr] | ^^^^^ help: remove these braces [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_braces)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `process` [INFO] [stderr] --> src/bin/ch17.rs:3:16 [INFO] [stderr] | [INFO] [stderr] 3 | use std::{env, process, io}; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/bin/ch22.rs:103:40 [INFO] [stderr] | [INFO] [stderr] 103 | fn fxx<'a>(n: i32, x: &'a Vec, y: &Vec) -> &'a u8 { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `xf` [INFO] [stderr] --> src/bin/ch22.rs:87:8 [INFO] [stderr] | [INFO] [stderr] 87 | fn xf(x: &'static i32) -> &'static i32 { [INFO] [stderr] | ^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `fx` [INFO] [stderr] --> src/bin/ch22.rs:91:8 [INFO] [stderr] | [INFO] [stderr] 91 | fn fx<'a, 'b>(x: &'a i32, y: &'b i32) -> (&'b i32, &'a i32) { [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `fxx` [INFO] [stderr] --> src/bin/ch22.rs:103:8 [INFO] [stderr] | [INFO] [stderr] 103 | fn fxx<'a>(n: i32, x: &'a Vec, y: &Vec) -> &'a u8 { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `ff` [INFO] [stderr] --> src/bin/ch22.rs:117:8 [INFO] [stderr] | [INFO] [stderr] 117 | fn ff(b: &mut u8) -> &u8 { [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `em_e` [INFO] [stderr] --> src/bin/ch10.rs:79:9 [INFO] [stderr] | [INFO] [stderr] 79 | let em_e = Em::::E; [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_em_e` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: value assigned to `continent` is never read [INFO] [stderr] --> src/bin/ch07.rs:44:13 [INFO] [stderr] | [INFO] [stderr] 44 | continent = Continent::Asia; [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_assignments)]` on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a` [INFO] [stderr] --> src/bin/ch07.rs:48:17 [INFO] [stderr] | [INFO] [stderr] 48 | let a = 8; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `outcome` [INFO] [stderr] --> src/bin/ch07.rs:118:9 [INFO] [stderr] | [INFO] [stderr] 118 | let outcome = Result::Failure(1200, 'X'); [INFO] [stderr] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_outcome` [INFO] [stderr] [INFO] [stderr] warning: field is never read: `c` [INFO] [stderr] --> src/bin/ch10.rs:26:5 [INFO] [stderr] | [INFO] [stderr] 26 | c: char, [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: field is never read: `n1` [INFO] [stderr] --> src/bin/ch10.rs:27:5 [INFO] [stderr] | [INFO] [stderr] 27 | n1: T1, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `n2` [INFO] [stderr] --> src/bin/ch10.rs:28:5 [INFO] [stderr] | [INFO] [stderr] 28 | n2: T2, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `xi` [INFO] [stderr] --> src/bin/ch04.rs:129:13 [INFO] [stderr] | [INFO] [stderr] 129 | let xi = 10; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_xi` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Africa` [INFO] [stderr] --> src/bin/ch07.rs:25:9 [INFO] [stderr] | [INFO] [stderr] 25 | Africa, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `America` [INFO] [stderr] --> src/bin/ch07.rs:26:9 [INFO] [stderr] | [INFO] [stderr] 26 | America, [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Oceania` [INFO] [stderr] --> src/bin/ch07.rs:27:9 [INFO] [stderr] | [INFO] [stderr] 27 | Oceania, [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `West` [INFO] [stderr] --> src/bin/ch07.rs:62:40 [INFO] [stderr] | [INFO] [stderr] 62 | enum CardinalPoint { North, South, West, East }; [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `East` [INFO] [stderr] --> src/bin/ch07.rs:62:46 [INFO] [stderr] | [INFO] [stderr] 62 | enum CardinalPoint { North, South, West, East }; [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Uncertainty` [INFO] [stderr] --> src/bin/ch07.rs:115:9 [INFO] [stderr] | [INFO] [stderr] 115 | Uncertainty, [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `f1` [INFO] [stderr] --> src/bin/ch17.rs:7:4 [INFO] [stderr] | [INFO] [stderr] 7 | fn f1(x: i32) -> Result { [INFO] [stderr] | ^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `f2` [INFO] [stderr] --> src/bin/ch17.rs:15:4 [INFO] [stderr] | [INFO] [stderr] 15 | fn f2(x: i32) -> Result { [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `f3` [INFO] [stderr] --> src/bin/ch17.rs:23:4 [INFO] [stderr] | [INFO] [stderr] 23 | fn f3(x: i32) -> Result { [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `f4` [INFO] [stderr] --> src/bin/ch17.rs:31:4 [INFO] [stderr] | [INFO] [stderr] 31 | fn f4(x: i32) -> Result { [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `f` [INFO] [stderr] --> src/bin/ch17.rs:39:4 [INFO] [stderr] | [INFO] [stderr] 39 | fn f(x: i32) -> Result { [INFO] [stderr] | ^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `of1` [INFO] [stderr] --> src/bin/ch17.rs:57:4 [INFO] [stderr] | [INFO] [stderr] 57 | fn of1(x: i32) -> Option { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `of2` [INFO] [stderr] --> src/bin/ch17.rs:65:4 [INFO] [stderr] | [INFO] [stderr] 65 | fn of2(x: i32) -> Option { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `of` [INFO] [stderr] --> src/bin/ch17.rs:73:4 [INFO] [stderr] | [INFO] [stderr] 73 | fn of(x: i32) -> Option { [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `copy_file` [INFO] [stderr] --> src/bin/ch17.rs:77:4 [INFO] [stderr] | [INFO] [stderr] 77 | fn copy_file(from: &str, to: &str) { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `S` [INFO] [stderr] --> src/bin/ch12.rs:41:15 [INFO] [stderr] | [INFO] [stderr] 41 | enum Em { S, W }; [INFO] [stderr] | ^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `W` [INFO] [stderr] --> src/bin/ch12.rs:41:18 [INFO] [stderr] | [INFO] [stderr] 41 | enum Em { S, W }; [INFO] [stderr] | ^ [INFO] [stderr] [INFO] [stderr] warning: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: 5 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: 9 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: 4 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Motorcycle` [INFO] [stderr] --> src/bin/ch08.rs:47:9 [INFO] [stderr] | [INFO] [stderr] 47 | Motorcycle, [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused imports: `BinaryHeap`, `VecDeque` [INFO] [stderr] --> src/bin/ch20.rs:22:24 [INFO] [stderr] | [INFO] [stderr] 22 | use std::collections::{VecDeque, BinaryHeap, HashSet, BTreeSet}; [INFO] [stderr] | ^^^^^^^^ ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Truck` [INFO] [stderr] --> src/bin/ch08.rs:49:9 [INFO] [stderr] | [INFO] [stderr] 49 | Truck, [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `kind` [INFO] [stderr] --> src/bin/ch08.rs:53:9 [INFO] [stderr] | [INFO] [stderr] 53 | kind: VehicleKind, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `registration_year` [INFO] [stderr] --> src/bin/ch08.rs:54:9 [INFO] [stderr] | [INFO] [stderr] 54 | registration_year: u16, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `registration_month` [INFO] [stderr] --> src/bin/ch08.rs:55:9 [INFO] [stderr] | [INFO] [stderr] 55 | registration_month: u8, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `elapsed_ms` [INFO] [stderr] --> src/bin/ch20.rs:24:4 [INFO] [stderr] | [INFO] [stderr] 24 | fn elapsed_ms(t1: Instant, t2: Instant) -> f64 { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: 10 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: 5 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 7.64s [INFO] running `"docker" "inspect" "4fa955efb00d380ade0032dee4f96e8e502fa75f2ac1836cf162538b5b96544c"` [INFO] running `"docker" "rm" "-f" "4fa955efb00d380ade0032dee4f96e8e502fa75f2ac1836cf162538b5b96544c"` [INFO] [stdout] 4fa955efb00d380ade0032dee4f96e8e502fa75f2ac1836cf162538b5b96544c [INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen" "--no-run"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 96df6f98abe0cd57abe2ccaab05ef13b70d18fc37c1eb7dbd032836bb57309e9 [INFO] running `"docker" "start" "-a" "96df6f98abe0cd57abe2ccaab05ef13b70d18fc37c1eb7dbd032836bb57309e9"` [INFO] [stderr] Compiling beginning_rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused imports: `BinaryHeap`, `VecDeque` [INFO] [stderr] --> src/bin/ch20.rs:22:24 [INFO] [stderr] | [INFO] [stderr] 22 | use std::collections::{VecDeque, BinaryHeap, HashSet, BTreeSet}; [INFO] [stderr] | ^^^^^^^^ ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `em_e` [INFO] [stderr] --> src/bin/ch10.rs:79:9 [INFO] [stderr] | [INFO] [stderr] 79 | let em_e = Em::::E; [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_em_e` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: field is never read: `c` [INFO] [stderr] --> src/bin/ch10.rs:26:5 [INFO] [stderr] | [INFO] [stderr] 26 | c: char, [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: field is never read: `n1` [INFO] [stderr] --> src/bin/ch10.rs:27:5 [INFO] [stderr] | [INFO] [stderr] 27 | n1: T1, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `n2` [INFO] [stderr] --> src/bin/ch10.rs:28:5 [INFO] [stderr] | [INFO] [stderr] 28 | n2: T2, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/bin/ch22.rs:103:40 [INFO] [stderr] | [INFO] [stderr] 103 | fn fxx<'a>(n: i32, x: &'a Vec, y: &Vec) -> &'a u8 { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `elapsed_ms` [INFO] [stderr] --> src/bin/ch20.rs:24:4 [INFO] [stderr] | [INFO] [stderr] 24 | fn elapsed_ms(t1: Instant, t2: Instant) -> f64 { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: value assigned to `continent` is never read [INFO] [stderr] --> src/bin/ch07.rs:44:13 [INFO] [stderr] | [INFO] [stderr] 44 | continent = Continent::Asia; [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_assignments)]` on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a` [INFO] [stderr] --> src/bin/ch07.rs:48:17 [INFO] [stderr] | [INFO] [stderr] 48 | let a = 8; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `outcome` [INFO] [stderr] --> src/bin/ch07.rs:118:9 [INFO] [stderr] | [INFO] [stderr] 118 | let outcome = Result::Failure(1200, 'X'); [INFO] [stderr] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_outcome` [INFO] [stderr] [INFO] [stderr] warning: 3 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stderr] warning: unused import: `process` [INFO] [stderr] --> src/bin/ch17.rs:3:16 [INFO] [stderr] | [INFO] [stderr] 3 | use std::{env, process, io}; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `f1` [INFO] [stderr] --> src/bin/ch17.rs:7:4 [INFO] [stderr] | [INFO] [stderr] 7 | fn f1(x: i32) -> Result { [INFO] [stderr] | ^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `f2` [INFO] [stderr] --> src/bin/ch17.rs:15:4 [INFO] [stderr] | [INFO] [stderr] 15 | fn f2(x: i32) -> Result { [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `f3` [INFO] [stderr] --> src/bin/ch17.rs:23:4 [INFO] [stderr] | [INFO] [stderr] 23 | fn f3(x: i32) -> Result { [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `f4` [INFO] [stderr] --> src/bin/ch17.rs:31:4 [INFO] [stderr] | [INFO] [stderr] 31 | fn f4(x: i32) -> Result { [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `f` [INFO] [stderr] --> src/bin/ch17.rs:39:4 [INFO] [stderr] | [INFO] [stderr] 39 | fn f(x: i32) -> Result { [INFO] [stderr] | ^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `of1` [INFO] [stderr] --> src/bin/ch17.rs:57:4 [INFO] [stderr] | [INFO] [stderr] 57 | fn of1(x: i32) -> Option { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `of2` [INFO] [stderr] --> src/bin/ch17.rs:65:4 [INFO] [stderr] | [INFO] [stderr] 65 | fn of2(x: i32) -> Option { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `of` [INFO] [stderr] --> src/bin/ch17.rs:73:4 [INFO] [stderr] | [INFO] [stderr] 73 | fn of(x: i32) -> Option { [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `copy_file` [INFO] [stderr] --> src/bin/ch17.rs:77:4 [INFO] [stderr] | [INFO] [stderr] 77 | fn copy_file(from: &str, to: &str) { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unnecessary braces around block return value [INFO] [stderr] --> src/bin/ch04.rs:120:17 [INFO] [stderr] | [INFO] [stderr] 120 | {{ }} [INFO] [stderr] | ^^^^^ help: remove these braces [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_braces)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 4 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unused variable: `xi` [INFO] [stderr] --> src/bin/ch04.rs:129:13 [INFO] [stderr] | [INFO] [stderr] 129 | let xi = 10; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_xi` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 10 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 5.77s [INFO] running `"docker" "inspect" "96df6f98abe0cd57abe2ccaab05ef13b70d18fc37c1eb7dbd032836bb57309e9"` [INFO] running `"docker" "rm" "-f" "96df6f98abe0cd57abe2ccaab05ef13b70d18fc37c1eb7dbd032836bb57309e9"` [INFO] [stdout] 96df6f98abe0cd57abe2ccaab05ef13b70d18fc37c1eb7dbd032836bb57309e9 [INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 6d13a33b61637223b0d05c93e914d0161340fdfe1b03f7458d2c75ee62a725f5 [INFO] running `"docker" "start" "-a" "6d13a33b61637223b0d05c93e914d0161340fdfe1b03f7458d2c75ee62a725f5"` [INFO] [stderr] warning: value assigned to `continent` is never read [INFO] [stderr] --> src/bin/ch07.rs:44:13 [INFO] [stderr] | [INFO] [stderr] 44 | continent = Continent::Asia; [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_assignments)]` on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: unused variable: `a` [INFO] [stderr] --> src/bin/ch07.rs:48:17 [INFO] [stderr] | [INFO] [stderr] 48 | let a = 8; [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `outcome` [INFO] [stderr] --> src/bin/ch07.rs:118:9 [INFO] [stderr] | [INFO] [stderr] 118 | let outcome = Result::Failure(1200, 'X'); [INFO] [stderr] | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_outcome` [INFO] [stderr] [INFO] [stderr] warning: 3 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unused import: `process` [INFO] [stderr] --> src/bin/ch17.rs:3:16 [INFO] [stderr] | [INFO] [stderr] 3 | use std::{env, process, io}; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `f1` [INFO] [stderr] --> src/bin/ch17.rs:7:4 [INFO] [stderr] | [INFO] [stderr] 7 | fn f1(x: i32) -> Result { [INFO] [stderr] | ^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `f2` [INFO] [stderr] --> src/bin/ch17.rs:15:4 [INFO] [stderr] | [INFO] [stderr] 15 | fn f2(x: i32) -> Result { [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `f3` [INFO] [stderr] --> src/bin/ch17.rs:23:4 [INFO] [stderr] | [INFO] [stderr] 23 | fn f3(x: i32) -> Result { [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `f4` [INFO] [stderr] --> src/bin/ch17.rs:31:4 [INFO] [stderr] | [INFO] [stderr] 31 | fn f4(x: i32) -> Result { [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `f` [INFO] [stderr] --> src/bin/ch17.rs:39:4 [INFO] [stderr] | [INFO] [stderr] 39 | fn f(x: i32) -> Result { [INFO] [stderr] | ^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `of1` [INFO] [stderr] --> src/bin/ch17.rs:57:4 [INFO] [stderr] | [INFO] [stderr] 57 | fn of1(x: i32) -> Option { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `of2` [INFO] [stderr] --> src/bin/ch17.rs:65:4 [INFO] [stderr] | [INFO] [stderr] 65 | fn of2(x: i32) -> Option { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `of` [INFO] [stderr] --> src/bin/ch17.rs:73:4 [INFO] [stderr] | [INFO] [stderr] 73 | fn of(x: i32) -> Option { [INFO] [stderr] | ^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `copy_file` [INFO] [stderr] --> src/bin/ch17.rs:77:4 [INFO] [stderr] | [INFO] [stderr] 77 | fn copy_file(from: &str, to: &str) { [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 10 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unused imports: `BinaryHeap`, `VecDeque` [INFO] [stderr] --> src/bin/ch20.rs:22:24 [INFO] [stderr] | [INFO] [stderr] 22 | use std::collections::{VecDeque, BinaryHeap, HashSet, BTreeSet}; [INFO] [stderr] | ^^^^^^^^ ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `elapsed_ms` [INFO] [stderr] --> src/bin/ch20.rs:24:4 [INFO] [stderr] | [INFO] [stderr] 24 | fn elapsed_ms(t1: Instant, t2: Instant) -> f64 { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `y` [INFO] [stderr] --> src/bin/ch22.rs:103:40 [INFO] [stderr] | [INFO] [stderr] 103 | fn fxx<'a>(n: i32, x: &'a Vec, y: &Vec) -> &'a u8 { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_y` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 1 warning emitted [INFO] [stderr] [INFO] [stderr] warning: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unnecessary braces around block return value [INFO] [stderr] --> src/bin/ch04.rs:120:17 [INFO] [stderr] | [INFO] [stderr] 120 | {{ }} [INFO] [stderr] | ^^^^^ help: remove these braces [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_braces)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `xi` [INFO] [stderr] --> src/bin/ch04.rs:129:13 [INFO] [stderr] | [INFO] [stderr] 129 | let xi = 10; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_xi` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unused variable: `em_e` [INFO] [stderr] --> src/bin/ch10.rs:79:9 [INFO] [stderr] | [INFO] [stderr] 79 | let em_e = Em::::E; [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_em_e` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: field is never read: `c` [INFO] [stderr] --> src/bin/ch10.rs:26:5 [INFO] [stderr] | [INFO] [stderr] 26 | c: char, [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: field is never read: `n1` [INFO] [stderr] --> src/bin/ch10.rs:27:5 [INFO] [stderr] | [INFO] [stderr] 27 | n1: T1, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `n2` [INFO] [stderr] --> src/bin/ch10.rs:28:5 [INFO] [stderr] | [INFO] [stderr] 28 | n2: T2, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 4 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.07s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/ch01-15ee3f7d2388a4cf [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/ch02-9ad762b0112b25e8 [INFO] [stderr] Running /opt/rustwide/target/debug/deps/ch03-4eb28c4b999b7ba5 [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/ch04-8aa74ee97225ad22 [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/ch05-762ee7c214481a53 [INFO] [stderr] Running /opt/rustwide/target/debug/deps/ch06-e08163ca7b716b34 [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/ch07-b1f46dfef4cb3d3f [INFO] [stdout] running 0 tests [INFO] [stderr] Running /opt/rustwide/target/debug/deps/ch08-032fd5a61f15d720 [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/ch09-f988db45c22ba4a6 [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/ch10-281d406652380dbd [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/ch11-7dcc8a0159d40bf0 [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/ch12-3ca6ff735faabe11 [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/ch13-535ccc097257576b [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/ch14-a89aa3121787456f [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/ch15-4fd9961ba610ec3b [INFO] [stderr] Running /opt/rustwide/target/debug/deps/ch16-2d4b2323e814b7b3 [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/ch17-cefbbc89d0b15438 [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/ch18-43a48e4f1858c6f3 [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/ch19-d7365169ee2d1474 [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/ch20-884c3d7dd27ddae3 [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/ch21-d9e5addd78e95415 [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/ch22-45dd7b52513e8821 [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `"docker" "inspect" "6d13a33b61637223b0d05c93e914d0161340fdfe1b03f7458d2c75ee62a725f5"` [INFO] running `"docker" "rm" "-f" "6d13a33b61637223b0d05c93e914d0161340fdfe1b03f7458d2c75ee62a725f5"` [INFO] [stdout] 6d13a33b61637223b0d05c93e914d0161340fdfe1b03f7458d2c75ee62a725f5