[INFO] cloning repository https://github.com/MusheghShah/rust_ds
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MusheghShah/rust_ds" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMusheghShah%2Frust_ds", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMusheghShah%2Frust_ds'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fef262f5954afb4663609081a7607593004bc4dd
[INFO] checking MusheghShah/rust_ds against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMusheghShah%2Frust_ds" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/MusheghShah/rust_ds
[INFO] finished tweaking git repo https://github.com/MusheghShah/rust_ds
[INFO] tweaked toml for git repo https://github.com/MusheghShah/rust_ds written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/MusheghShah/rust_ds on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/MusheghShah/rust_ds already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e3ea723baf8ea86fc35adb2343b9d0c6bcdb4d4a9a7451d1ae28c0e640d621eb
[INFO] running `Command { std: "docker" "start" "-a" "e3ea723baf8ea86fc35adb2343b9d0c6bcdb4d4a9a7451d1ae28c0e640d621eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e3ea723baf8ea86fc35adb2343b9d0c6bcdb4d4a9a7451d1ae28c0e640d621eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3ea723baf8ea86fc35adb2343b9d0c6bcdb4d4a9a7451d1ae28c0e640d621eb", kill_on_drop: false }`
[INFO] [stdout] e3ea723baf8ea86fc35adb2343b9d0c6bcdb4d4a9a7451d1ae28c0e640d621eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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=forbid -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f27bc6416e6e6c4668782b4a313232c91fed9edbdd9e7bf17e45d8d1b0e02bb
[INFO] running `Command { std: "docker" "start" "-a" "3f27bc6416e6e6c4668782b4a313232c91fed9edbdd9e7bf17e45d8d1b0e02bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]     Checking getrandom v0.2.11
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rust_ds v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> tests/stress_tests.rs:97:27
[INFO] [stdout]    |
[INFO] [stdout] 97 |     elapsed_times.reserve((num_iterations + 1).try_into().unwrap());
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> tests/stress_tests.rs:122:27
[INFO] [stdout]     |
[INFO] [stdout] 122 |     elapsed_times.reserve((num_iterations + 1).try_into().unwrap());
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_ds` (test "stress_tests") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/graph/graph.rs:461:74
[INFO] [stdout]     |
[INFO] [stdout] 461 |     pub fn node_iter<'a>(&'a self, node: &'a N) -> impl Iterator<Item = (&N, &E)> + 'a {
[INFO] [stdout]     |                           --              --                             ^^  ^^     -- the same lifetime is named here
[INFO] [stdout]     |                           |               |                              |   |
[INFO] [stdout]     |                           |               |                              |   the same lifetime is elided here
[INFO] [stdout]     |                           |               the lifetime is named here     the same lifetime is elided here
[INFO] [stdout]     |                           the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 461 |     pub fn node_iter<'a>(&'a self, node: &'a N) -> impl Iterator<Item = (&'a N, &'a E)> + 'a {
[INFO] [stdout]     |                                                                           ++     ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/graph/graph.rs:461:74
[INFO] [stdout]     |
[INFO] [stdout] 461 |     pub fn node_iter<'a>(&'a self, node: &'a N) -> impl Iterator<Item = (&N, &E)> + 'a {
[INFO] [stdout]     |                           --              --                             ^^  ^^     -- the same lifetime is named here
[INFO] [stdout]     |                           |               |                              |   |
[INFO] [stdout]     |                           |               |                              |   the same lifetime is elided here
[INFO] [stdout]     |                           |               the lifetime is named here     the same lifetime is elided here
[INFO] [stdout]     |                           the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 461 |     pub fn node_iter<'a>(&'a self, node: &'a N) -> impl Iterator<Item = (&'a N, &'a E)> + 'a {
[INFO] [stdout]     |                                                                           ++     ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3f27bc6416e6e6c4668782b4a313232c91fed9edbdd9e7bf17e45d8d1b0e02bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f27bc6416e6e6c4668782b4a313232c91fed9edbdd9e7bf17e45d8d1b0e02bb", kill_on_drop: false }`
[INFO] [stdout] 3f27bc6416e6e6c4668782b4a313232c91fed9edbdd9e7bf17e45d8d1b0e02bb
