[INFO] cloning repository https://github.com/slightknack/together
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/slightknack/together" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fslightknack%2Ftogether", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fslightknack%2Ftogether'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4ed7cac40f1804fc30cc2420072c3ff39bb1f191
[INFO] testing slightknack/together against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fslightknack%2Ftogether" "/workspace/builds/worker-57/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-57/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/slightknack/together on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/slightknack/together
[INFO] finished tweaking git repo https://github.com/slightknack/together
[INFO] tweaked toml for git repo https://github.com/slightknack/together written to /workspace/builds/worker-57/source/Cargo.toml
[INFO] crate git repo https://github.com/slightknack/together already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8524197a2ea8d241adfe0d4c7d4dc31546784262f5a836ad886d567b04345177
[INFO] running `Command { std: "docker" "start" "-a" "8524197a2ea8d241adfe0d4c7d4dc31546784262f5a836ad886d567b04345177", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8524197a2ea8d241adfe0d4c7d4dc31546784262f5a836ad886d567b04345177", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8524197a2ea8d241adfe0d4c7d4dc31546784262f5a836ad886d567b04345177", kill_on_drop: false }`
[INFO] [stdout] 8524197a2ea8d241adfe0d4c7d4dc31546784262f5a836ad886d567b04345177
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2f6c1f6df0a1007339a5a05d961f35e9614f1de8395f8bf5a34f6bf596fd7df2
[INFO] running `Command { std: "docker" "start" "-a" "2f6c1f6df0a1007339a5a05d961f35e9614f1de8395f8bf5a34f6bf596fd7df2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling together v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `User`
[INFO] [stdout]  --> src/tree_log.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct User(usize);
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Id`
[INFO] [stdout]   --> src/tree_log.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Id(User, usize, usize);
[INFO] [stdout]    |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Edit`
[INFO] [stdout]   --> src/tree_log.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Edit {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `History`
[INFO] [stdout]   --> src/tree_log.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct History<T: Collection> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `TreeLog`
[INFO] [stdout]   --> src/tree_log.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct TreeLog<T: Collection> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Leaf`
[INFO] [stdout]  --> src/index_tree.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Leaf(T),
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]   --> src/index_tree.rs:85:12
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn get(&self, index: usize) -> &T {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert`
[INFO] [stdout]   --> src/index_tree.rs:95:12
[INFO] [stdout]    |
[INFO] [stdout] 95 |     pub fn insert(&mut self, item: T, index: usize) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 54.53s
[INFO] running `Command { std: "docker" "inspect" "2f6c1f6df0a1007339a5a05d961f35e9614f1de8395f8bf5a34f6bf596fd7df2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f6c1f6df0a1007339a5a05d961f35e9614f1de8395f8bf5a34f6bf596fd7df2", kill_on_drop: false }`
[INFO] [stdout] 2f6c1f6df0a1007339a5a05d961f35e9614f1de8395f8bf5a34f6bf596fd7df2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a2183ce6c990dca8fddf27c7b2e50a86f75e6187304c0cb35ceba780081b5de0
[INFO] running `Command { std: "docker" "start" "-a" "a2183ce6c990dca8fddf27c7b2e50a86f75e6187304c0cb35ceba780081b5de0", kill_on_drop: false }`
[INFO] [stderr]    Compiling together v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `User`
[INFO] [stdout]  --> src/tree_log.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct User(usize);
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Id`
[INFO] [stdout]   --> src/tree_log.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Id(User, usize, usize);
[INFO] [stdout]    |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Edit`
[INFO] [stdout]   --> src/tree_log.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Edit {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `History`
[INFO] [stdout]   --> src/tree_log.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct History<T: Collection> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `TreeLog`
[INFO] [stdout]   --> src/tree_log.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct TreeLog<T: Collection> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Leaf`
[INFO] [stdout]  --> src/index_tree.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Leaf(T),
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]   --> src/index_tree.rs:85:12
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub fn get(&self, index: usize) -> &T {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert`
[INFO] [stdout]   --> src/index_tree.rs:95:12
[INFO] [stdout]    |
[INFO] [stdout] 95 |     pub fn insert(&mut self, item: T, index: usize) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "a2183ce6c990dca8fddf27c7b2e50a86f75e6187304c0cb35ceba780081b5de0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2183ce6c990dca8fddf27c7b2e50a86f75e6187304c0cb35ceba780081b5de0", kill_on_drop: false }`
[INFO] [stdout] a2183ce6c990dca8fddf27c7b2e50a86f75e6187304c0cb35ceba780081b5de0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8160f55398af4a4e963bcb5c5d3e92a56aa1446f4720a1589bfddfa5e6998e87
[INFO] running `Command { std: "docker" "start" "-a" "8160f55398af4a4e963bcb5c5d3e92a56aa1446f4720a1589bfddfa5e6998e87", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: struct is never constructed: `User`
[INFO] [stderr]  --> src/tree_log.rs:7:12
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub struct User(usize);
[INFO] [stderr]   |            ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Id`
[INFO] [stderr]   --> src/tree_log.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub struct Id(User, usize, usize);
[INFO] [stderr]    |            ^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Edit`
[INFO] [stderr]   --> src/tree_log.rs:12:12
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub struct Edit {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `History`
[INFO] [stderr]   --> src/tree_log.rs:19:12
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub struct History<T: Collection> {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `TreeLog`
[INFO] [stderr]   --> src/tree_log.rs:25:12
[INFO] [stderr]    |
[INFO] [stderr] 25 | pub struct TreeLog<T: Collection> {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Leaf`
[INFO] [stderr]  --> src/index_tree.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     Leaf(T),
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get`
[INFO] [stderr]   --> src/index_tree.rs:85:12
[INFO] [stderr]    |
[INFO] [stderr] 85 |     pub fn get(&self, index: usize) -> &T {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `insert`
[INFO] [stderr]   --> src/index_tree.rs:95:12
[INFO] [stderr]    |
[INFO] [stderr] 95 |     pub fn insert(&mut self, item: T, index: usize) {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `together` (bin "together" test) generated 8 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.19s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/together-e7e00cbf6ca647fa)
[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" "8160f55398af4a4e963bcb5c5d3e92a56aa1446f4720a1589bfddfa5e6998e87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8160f55398af4a4e963bcb5c5d3e92a56aa1446f4720a1589bfddfa5e6998e87", kill_on_drop: false }`
[INFO] [stdout] 8160f55398af4a4e963bcb5c5d3e92a56aa1446f4720a1589bfddfa5e6998e87