[INFO] cloning repository https://github.com/jmbredenberg/join-tests
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jmbredenberg/join-tests" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmbredenberg%2Fjoin-tests", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmbredenberg%2Fjoin-tests'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ee0e4252478f130dbe673a83eeeadd7147902dfa
[INFO] testing jmbredenberg/join-tests against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjmbredenberg%2Fjoin-tests" "/workspace/builds/worker-19/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-19/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jmbredenberg/join-tests 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/jmbredenberg/join-tests
[INFO] finished tweaking git repo https://github.com/jmbredenberg/join-tests
[INFO] tweaked toml for git repo https://github.com/jmbredenberg/join-tests written to /workspace/builds/worker-19/source/Cargo.toml
[INFO] crate git repo https://github.com/jmbredenberg/join-tests 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]  Downloading crates ...
[INFO] [stderr]   Downloaded nom v3.2.1
[INFO] [stderr]   Downloaded syn v0.15.28
[INFO] [stderr]   Downloaded pretty_assertions v0.5.1
[INFO] [stderr]   Downloaded permutohedron v0.2.4
[INFO] [stderr]   Downloaded nom-sql v0.0.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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] 3da78f6521604e0e64df21ac00e06e7dd92e7340f725f006c51ef312d6fc62ff
[INFO] running `Command { std: "docker" "start" "-a" "3da78f6521604e0e64df21ac00e06e7dd92e7340f725f006c51ef312d6fc62ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3da78f6521604e0e64df21ac00e06e7dd92e7340f725f006c51ef312d6fc62ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3da78f6521604e0e64df21ac00e06e7dd92e7340f725f006c51ef312d6fc62ff", kill_on_drop: false }`
[INFO] [stdout] 3da78f6521604e0e64df21ac00e06e7dd92e7340f725f006c51ef312d6fc62ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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] 2866269c353dd2843775eab45960f390ec0f50f4fdf8e2781f5f41459e6ef593
[INFO] running `Command { std: "docker" "start" "-a" "2866269c353dd2843775eab45960f390ec0f50f4fdf8e2781f5f41459e6ef593", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.50
[INFO] [stderr]    Compiling serde v1.0.89
[INFO] [stderr]    Compiling permutohedron v0.2.4
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling syn v0.15.28
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling nom v3.2.1
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling serde_derive v1.0.89
[INFO] [stderr]    Compiling nom-sql v0.0.4
[INFO] [stderr]    Compiling join-tests v0.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/graph.rs:315:13
[INFO] [stdout]     |
[INFO] [stdout] 315 |             _ => unimplemented!(),
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `next_node` is never read
[INFO] [stdout]   --> src/join.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |     let mut next_node = prev_node.clone();
[INFO] [stdout]    |             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `next_node` is never read
[INFO] [stdout]    --> src/join.rs:142:13
[INFO] [stdout]     |
[INFO] [stdout] 142 |     let mut next_node = prev_node.clone();
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `next_node` is never read
[INFO] [stdout]    --> src/join.rs:173:17
[INFO] [stdout]     |
[INFO] [stdout] 173 |         let mut next_node = prev_node.clone();
[INFO] [stdout]     |                 ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `opts`
[INFO] [stdout]    --> src/join.rs:194:58
[INFO] [stdout]     |
[INFO] [stdout] 194 | ...                   graph: &mut Vec<TestNodeRef>, opts: Optimizations) -> TestNodeRef {
[INFO] [stdout]     |                                                     ^^^^ help: if this is intentional, prefix it with an underscore: `_opts`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/lib.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/graph.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 63 |     write!(f, "{}-- {}:{:?}\n", spaces, node.name, node.data);
[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]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/graph.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |         indented_print(&a.borrow(), indent+1, f);
[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: unused `Result` that must be used
[INFO] [stdout]    --> src/graph.rs:205:13
[INFO] [stdout]     |
[INFO] [stdout] 205 |             f.write_all(format!("{}", graphviz(&graph)).as_bytes());
[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: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output`
[INFO] [stdout]   --> src/main.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |     let output = Command::new("dot")
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.71s
[INFO] running `Command { std: "docker" "inspect" "2866269c353dd2843775eab45960f390ec0f50f4fdf8e2781f5f41459e6ef593", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2866269c353dd2843775eab45960f390ec0f50f4fdf8e2781f5f41459e6ef593", kill_on_drop: false }`
[INFO] [stdout] 2866269c353dd2843775eab45960f390ec0f50f4fdf8e2781f5f41459e6ef593
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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] c979a83265d2b9bd0a4e0a9011fc48835c4ad4d62890a8ee4d7676754d0a8372
[INFO] running `Command { std: "docker" "start" "-a" "c979a83265d2b9bd0a4e0a9011fc48835c4ad4d62890a8ee4d7676754d0a8372", kill_on_drop: false }`
[INFO] [stderr]    Compiling difference v2.0.0
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/graph.rs:315:13
[INFO] [stdout]     |
[INFO] [stdout] 315 |             _ => unimplemented!(),
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `next_node` is never read
[INFO] [stdout]   --> src/join.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |     let mut next_node = prev_node.clone();
[INFO] [stdout]    |             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `next_node` is never read
[INFO] [stdout]    --> src/join.rs:142:13
[INFO] [stdout]     |
[INFO] [stdout] 142 |     let mut next_node = prev_node.clone();
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `next_node` is never read
[INFO] [stdout]    --> src/join.rs:173:17
[INFO] [stdout]     |
[INFO] [stdout] 173 |         let mut next_node = prev_node.clone();
[INFO] [stdout]     |                 ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `opts`
[INFO] [stdout]    --> src/join.rs:194:58
[INFO] [stdout]     |
[INFO] [stdout] 194 | ...                   graph: &mut Vec<TestNodeRef>, opts: Optimizations) -> TestNodeRef {
[INFO] [stdout]     |                                                     ^^^^ help: if this is intentional, prefix it with an underscore: `_opts`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/lib.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/graph.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 63 |     write!(f, "{}-- {}:{:?}\n", spaces, node.name, node.data);
[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]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/graph.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |         indented_print(&a.borrow(), indent+1, f);
[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: unused `Result` that must be used
[INFO] [stdout]    --> src/graph.rs:205:13
[INFO] [stdout]     |
[INFO] [stdout] 205 |             f.write_all(format!("{}", graphviz(&graph)).as_bytes());
[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: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling pretty_assertions v0.5.1
[INFO] [stderr]    Compiling join-tests v0.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `output`
[INFO] [stdout]   --> src/main.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |     let output = Command::new("dot")
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/graph.rs:315:13
[INFO] [stdout]     |
[INFO] [stdout] 315 |             _ => unimplemented!(),
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `next_node` is never read
[INFO] [stdout]   --> src/join.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |     let mut next_node = prev_node.clone();
[INFO] [stdout]    |             ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `next_node` is never read
[INFO] [stdout]    --> src/join.rs:142:13
[INFO] [stdout]     |
[INFO] [stdout] 142 |     let mut next_node = prev_node.clone();
[INFO] [stdout]     |             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `next_node` is never read
[INFO] [stdout]    --> src/join.rs:173:17
[INFO] [stdout]     |
[INFO] [stdout] 173 |         let mut next_node = prev_node.clone();
[INFO] [stdout]     |                 ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `opts`
[INFO] [stdout]    --> src/join.rs:194:58
[INFO] [stdout]     |
[INFO] [stdout] 194 | ...                   graph: &mut Vec<TestNodeRef>, opts: Optimizations) -> TestNodeRef {
[INFO] [stdout]     |                                                     ^^^^ help: if this is intentional, prefix it with an underscore: `_opts`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/graph.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 63 |     write!(f, "{}-- {}:{:?}\n", spaces, node.name, node.data);
[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]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/graph.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |         indented_print(&a.borrow(), indent+1, f);
[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: unused `Result` that must be used
[INFO] [stdout]    --> src/graph.rs:205:13
[INFO] [stdout]     |
[INFO] [stdout] 205 |             f.write_all(format!("{}", graphviz(&graph)).as_bytes());
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `Command { std: "docker" "inspect" "c979a83265d2b9bd0a4e0a9011fc48835c4ad4d62890a8ee4d7676754d0a8372", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c979a83265d2b9bd0a4e0a9011fc48835c4ad4d62890a8ee4d7676754d0a8372", kill_on_drop: false }`
[INFO] [stdout] c979a83265d2b9bd0a4e0a9011fc48835c4ad4d62890a8ee4d7676754d0a8372
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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] 6b3b28c935ff8e0b3a0555d378cfa269f00fa63b42eb769b8abfa6dde2381721
[INFO] running `Command { std: "docker" "start" "-a" "6b3b28c935ff8e0b3a0555d378cfa269f00fa63b42eb769b8abfa6dde2381721", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/graph.rs:315:13
[INFO] [stderr]     |
[INFO] [stderr] 315 |             _ => unimplemented!(),
[INFO] [stderr]     |             ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `next_node` is never read
[INFO] [stderr]   --> src/join.rs:76:13
[INFO] [stderr]    |
[INFO] [stderr] 76 |     let mut next_node = prev_node.clone();
[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: value assigned to `next_node` is never read
[INFO] [stderr]    --> src/join.rs:142:13
[INFO] [stderr]     |
[INFO] [stderr] 142 |     let mut next_node = prev_node.clone();
[INFO] [stderr]     |             ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `next_node` is never read
[INFO] [stderr]    --> src/join.rs:173:17
[INFO] [stderr]     |
[INFO] [stderr] 173 |         let mut next_node = prev_node.clone();
[INFO] [stderr]     |                 ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `opts`
[INFO] [stderr]    --> src/join.rs:194:58
[INFO] [stderr]     |
[INFO] [stderr] 194 | ...                   graph: &mut Vec<TestNodeRef>, opts: Optimizations) -> TestNodeRef {
[INFO] [stderr]     |                                                     ^^^^ help: if this is intentional, prefix it with an underscore: `_opts`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/lib.rs:25:8
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn new() -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/graph.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     write!(f, "{}-- {}:{:?}\n", spaces, node.name, node.data);
[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]    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/graph.rs:65:9
[INFO] [stderr]    |
[INFO] [stderr] 65 |         indented_print(&a.borrow(), indent+1, f);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/graph.rs:205:13
[INFO] [stderr]     |
[INFO] [stderr] 205 |             f.write_all(format!("{}", graphviz(&graph)).as_bytes());
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `join-tests` (lib) generated 9 warnings
[INFO] [stderr] warning: `join-tests` (lib test) generated 8 warnings (8 duplicates)
[INFO] [stderr] warning: unused variable: `output`
[INFO] [stderr]   --> src/main.rs:67:9
[INFO] [stderr]    |
[INFO] [stderr] 67 |     let output = Command::new("dot")
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `join-tests` (bin "join-tests" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.38s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/join_tests-ac5054f1433a38d6)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test_long_join ... ok
[INFO] [stdout] test test_combo_join ... ok
[INFO] [stdout] test tpcw_test_queries ... ok
[INFO] [stdout] test test_lobsters_schema ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.36s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/join_tests-2d68846a419341dc)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests join-tests
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6b3b28c935ff8e0b3a0555d378cfa269f00fa63b42eb769b8abfa6dde2381721", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b3b28c935ff8e0b3a0555d378cfa269f00fa63b42eb769b8abfa6dde2381721", kill_on_drop: false }`
[INFO] [stdout] 6b3b28c935ff8e0b3a0555d378cfa269f00fa63b42eb769b8abfa6dde2381721