[INFO] cloning repository https://github.com/sesquipedalian-dev/rust-primer-examples
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sesquipedalian-dev/rust-primer-examples" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsesquipedalian-dev%2Frust-primer-examples", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsesquipedalian-dev%2Frust-primer-examples'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 50c1644b17847498f1a85eb2e3afe2ad8033b384
[INFO] testing sesquipedalian-dev/rust-primer-examples against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsesquipedalian-dev%2Frust-primer-examples" "/workspace/builds/worker-106/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-106/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sesquipedalian-dev/rust-primer-examples on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sesquipedalian-dev/rust-primer-examples
[INFO] finished tweaking git repo https://github.com/sesquipedalian-dev/rust-primer-examples
[INFO] tweaked toml for git repo https://github.com/sesquipedalian-dev/rust-primer-examples written to /workspace/builds/worker-106/source/Cargo.toml
[INFO] crate git repo https://github.com/sesquipedalian-dev/rust-primer-examples already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eb923815d4778a726f544ca987518b4ba00e609dfb86b792469a281e765d8204
[INFO] running `Command { std: "docker" "start" "-a" "eb923815d4778a726f544ca987518b4ba00e609dfb86b792469a281e765d8204", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb923815d4778a726f544ca987518b4ba00e609dfb86b792469a281e765d8204", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb923815d4778a726f544ca987518b4ba00e609dfb86b792469a281e765d8204", kill_on_drop: false }`
[INFO] [stdout] eb923815d4778a726f544ca987518b4ba00e609dfb86b792469a281e765d8204
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2ad5dc78c9ad02ea3bb3123e4dc9bfc0ca3f4b833eb01ebe40100274bb440f6f
[INFO] running `Command { std: "docker" "start" "-a" "2ad5dc78c9ad02ea3bb3123e4dc9bfc0ca3f4b833eb01ebe40100274bb440f6f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling first_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `s1`
[INFO] [stdout]  --> src/ownership.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let s1 = String::from("hello");
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_s1`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r1`
[INFO] [stdout]   --> src/ownership.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let r1 = &mut s2;
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_r1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/pattern_matching.rs:21:17
[INFO] [stdout]    |
[INFO] [stdout] 21 |     if let Some(v) = maybeAThing() {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/iterators.rs:13:19
[INFO] [stdout]    |
[INFO] [stdout] 13 |         .filter(|(k, v)| **v > 2)
[INFO] [stdout]    |                   ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `None`
[INFO] [stdout]  --> src/enums.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     None,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `ScottOption` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/enums.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[derive(Debug)]
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `doTemp` should have a snake case name
[INFO] [stdout]   --> src/enums.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn doTemp(x: Temperature) {
[INFO] [stdout]    |    ^^^^^^ help: convert the identifier to snake case: `do_temp`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `maybeAThing` should have a snake case name
[INFO] [stdout]   --> src/pattern_matching.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn maybeAThing() -> Option<usize> {
[INFO] [stdout]    |    ^^^^^^^^^^^ help: convert the identifier to snake case: `maybe_athing`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait method `toInt` should have a snake case name
[INFO] [stdout]   --> src/type_constraints.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn toInt(&self) -> u32;
[INFO] [stdout]    |        ^^^^^ help: convert the identifier to snake case: `to_int`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 53.69s
[INFO] running `Command { std: "docker" "inspect" "2ad5dc78c9ad02ea3bb3123e4dc9bfc0ca3f4b833eb01ebe40100274bb440f6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ad5dc78c9ad02ea3bb3123e4dc9bfc0ca3f4b833eb01ebe40100274bb440f6f", kill_on_drop: false }`
[INFO] [stdout] 2ad5dc78c9ad02ea3bb3123e4dc9bfc0ca3f4b833eb01ebe40100274bb440f6f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4673267d8969d4ccca04eacab295e605c3860ce72a3623767e68889abdbcb996
[INFO] running `Command { std: "docker" "start" "-a" "4673267d8969d4ccca04eacab295e605c3860ce72a3623767e68889abdbcb996", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling first_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `s1`
[INFO] [stdout]  --> src/ownership.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let s1 = String::from("hello");
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_s1`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r1`
[INFO] [stdout]   --> src/ownership.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let r1 = &mut s2;
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_r1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/pattern_matching.rs:21:17
[INFO] [stdout]    |
[INFO] [stdout] 21 |     if let Some(v) = maybeAThing() {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/iterators.rs:13:19
[INFO] [stdout]    |
[INFO] [stdout] 13 |         .filter(|(k, v)| **v > 2)
[INFO] [stdout]    |                   ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `None`
[INFO] [stdout]  --> src/enums.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     None,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `ScottOption` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/enums.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[derive(Debug)]
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `doTemp` should have a snake case name
[INFO] [stdout]   --> src/enums.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn doTemp(x: Temperature) {
[INFO] [stdout]    |    ^^^^^^ help: convert the identifier to snake case: `do_temp`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `maybeAThing` should have a snake case name
[INFO] [stdout]   --> src/pattern_matching.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn maybeAThing() -> Option<usize> {
[INFO] [stdout]    |    ^^^^^^^^^^^ help: convert the identifier to snake case: `maybe_athing`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait method `toInt` should have a snake case name
[INFO] [stdout]   --> src/type_constraints.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn toInt(&self) -> u32;
[INFO] [stdout]    |        ^^^^^ help: convert the identifier to snake case: `to_int`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 46.51s
[INFO] running `Command { std: "docker" "inspect" "4673267d8969d4ccca04eacab295e605c3860ce72a3623767e68889abdbcb996", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4673267d8969d4ccca04eacab295e605c3860ce72a3623767e68889abdbcb996", kill_on_drop: false }`
[INFO] [stdout] 4673267d8969d4ccca04eacab295e605c3860ce72a3623767e68889abdbcb996
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-106/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] eafae0e7d1dc60a94683f7cc26090b3445a3a1d608ec9fd7a2aef351a626fd93
[INFO] running `Command { std: "docker" "start" "-a" "eafae0e7d1dc60a94683f7cc26090b3445a3a1d608ec9fd7a2aef351a626fd93", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused variable: `s1`
[INFO] [stdout] 
[INFO] [stderr]  --> src/ownership.rs:3:9
[INFO] [stdout] running 0 tests
[INFO] [stderr]   |
[INFO] [stdout] 
[INFO] [stderr] 3 |     let s1 = String::from("hello");
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]   |         ^^ help: if this is intentional, prefix it with an underscore: `_s1`
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `r1`
[INFO] [stderr]   --> src/ownership.rs:17:13
[INFO] [stderr]    |
[INFO] [stderr] 17 |         let r1 = &mut s2;
[INFO] [stderr]    |             ^^ help: if this is intentional, prefix it with an underscore: `_r1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]   --> src/pattern_matching.rs:21:17
[INFO] [stderr]    |
[INFO] [stderr] 21 |     if let Some(v) = maybeAThing() {
[INFO] [stderr]    |                 ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `k`
[INFO] [stderr]   --> src/iterators.rs:13:19
[INFO] [stderr]    |
[INFO] [stderr] 13 |         .filter(|(k, v)| **v > 2)
[INFO] [stderr]    |                   ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `None`
[INFO] [stderr]  --> src/enums.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     None,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] note: `ScottOption` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]  --> src/enums.rs:1:10
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[derive(Debug)]
[INFO] [stderr]   |          ^^^^^
[INFO] [stderr]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: function `doTemp` should have a snake case name
[INFO] [stderr]   --> src/enums.rs:29:4
[INFO] [stderr]    |
[INFO] [stderr] 29 | fn doTemp(x: Temperature) {
[INFO] [stderr]    |    ^^^^^^ help: convert the identifier to snake case: `do_temp`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `maybeAThing` should have a snake case name
[INFO] [stderr]   --> src/pattern_matching.rs:28:4
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn maybeAThing() -> Option<usize> {
[INFO] [stderr]    |    ^^^^^^^^^^^ help: convert the identifier to snake case: `maybe_athing`
[INFO] [stderr] 
[INFO] [stderr] warning: trait method `toInt` should have a snake case name
[INFO] [stderr]   --> src/type_constraints.rs:34:8
[INFO] [stderr]    |
[INFO] [stderr] 34 |     fn toInt(&self) -> u32;
[INFO] [stderr]    |        ^^^^^ help: convert the identifier to snake case: `to_int`
[INFO] [stderr] 
[INFO] [stderr] warning: `first_rust` (bin "first_rust" test) generated 8 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1m 39s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/first_rust-8cc02821bc177b5c)
[INFO] running `Command { std: "docker" "inspect" "eafae0e7d1dc60a94683f7cc26090b3445a3a1d608ec9fd7a2aef351a626fd93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eafae0e7d1dc60a94683f7cc26090b3445a3a1d608ec9fd7a2aef351a626fd93", kill_on_drop: false }`
[INFO] [stdout] eafae0e7d1dc60a94683f7cc26090b3445a3a1d608ec9fd7a2aef351a626fd93