[INFO] fetching crate muffin 0.1.1...
[INFO] testing muffin-0.1.1 against 1.91.0 for beta-1.92-2
[INFO] extracting crate muffin 0.1.1 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate muffin 0.1.1
[INFO] finished tweaking crates.io crate muffin 0.1.1
[INFO] tweaked toml for crates.io crate muffin 0.1.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate muffin 0.1.1 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate muffin 0.1.1 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" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3951eb133a5a279dd0b1b40349ea26c6841524de828ab184676d3d9f5d4dc633
[INFO] running `Command { std: "docker" "start" "-a" "3951eb133a5a279dd0b1b40349ea26c6841524de828ab184676d3d9f5d4dc633", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3951eb133a5a279dd0b1b40349ea26c6841524de828ab184676d3d9f5d4dc633", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3951eb133a5a279dd0b1b40349ea26c6841524de828ab184676d3d9f5d4dc633", kill_on_drop: false }`
[INFO] [stdout] 3951eb133a5a279dd0b1b40349ea26c6841524de828ab184676d3d9f5d4dc633
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cd3cbaa013cd4d2a79cb4e0f5d5abb2fe9d08c1448831b6160402f044336b06a
[INFO] running `Command { std: "docker" "start" "-a" "cd3cbaa013cd4d2a79cb4e0f5d5abb2fe9d08c1448831b6160402f044336b06a", kill_on_drop: false }`
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[INFO] [stderr]    Compiling futures-executor v0.3.26
[INFO] [stderr]    Compiling futures v0.3.26
[INFO] [stderr]    Compiling trust-dns-proto v0.21.2
[INFO] [stderr]    Compiling tokio-util v0.7.7
[INFO] [stderr]    Compiling tokio-rustls v0.23.4
[INFO] [stderr]    Compiling uuid v1.3.0
[INFO] [stderr]    Compiling serde_bytes v0.11.9
[INFO] [stderr]    Compiling serde_with v1.14.0
[INFO] [stderr]    Compiling trust-dns-resolver v0.21.2
[INFO] [stderr]    Compiling bson v2.5.0
[INFO] [stderr]    Compiling mongodb v2.3.1
[INFO] [stderr]    Compiling muffin v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/types.rs:16:15
[INFO] [stdout]    |
[INFO] [stdout] 16 |     Processed(LockedJob, Status),
[INFO] [stdout]    |     --------- ^^^^^^^^^  ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ProcessJobsResult` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 16 -     Processed(LockedJob, Status),
[INFO] [stdout] 16 +     Processed((), ()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/types.rs:18:11
[INFO] [stdout]    |
[INFO] [stdout] 18 |     Error(Error),
[INFO] [stdout]    |     ----- ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ProcessJobsResult` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 18 -     Error(Error),
[INFO] [stdout] 18 +     Error(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 42s
[INFO] running `Command { std: "docker" "inspect" "cd3cbaa013cd4d2a79cb4e0f5d5abb2fe9d08c1448831b6160402f044336b06a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd3cbaa013cd4d2a79cb4e0f5d5abb2fe9d08c1448831b6160402f044336b06a", kill_on_drop: false }`
[INFO] [stdout] cd3cbaa013cd4d2a79cb4e0f5d5abb2fe9d08c1448831b6160402f044336b06a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 39a368fe198096da3bb46becf35fbd7b2d931b56f7b8fb358400ddb45e3870bb
[INFO] running `Command { std: "docker" "start" "-a" "39a368fe198096da3bb46becf35fbd7b2d931b56f7b8fb358400ddb45e3870bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling tokio v1.25.0
[INFO] [stderr]    Compiling signal-hook-registry v1.4.1
[INFO] [stderr]    Compiling anyhow v1.0.69
[INFO] [stderr]    Compiling expecting v0.4.0
[INFO] [stderr]    Compiling trust-dns-proto v0.21.2
[INFO] [stderr]    Compiling tokio-rustls v0.23.4
[INFO] [stderr]    Compiling tokio-util v0.7.7
[INFO] [stderr]    Compiling trust-dns-resolver v0.21.2
[INFO] [stderr]    Compiling mongodb v2.3.1
[INFO] [stderr]    Compiling muffin v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/types.rs:16:15
[INFO] [stdout]    |
[INFO] [stdout] 16 |     Processed(LockedJob, Status),
[INFO] [stdout]    |     --------- ^^^^^^^^^  ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ProcessJobsResult` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 16 -     Processed(LockedJob, Status),
[INFO] [stdout] 16 +     Processed((), ()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/types.rs:18:11
[INFO] [stdout]    |
[INFO] [stdout] 18 |     Error(Error),
[INFO] [stdout]    |     ----- ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ProcessJobsResult` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 18 -     Error(Error),
[INFO] [stdout] 18 +     Error(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/types.rs:16:15
[INFO] [stdout]    |
[INFO] [stdout] 16 |     Processed(LockedJob, Status),
[INFO] [stdout]    |     --------- ^^^^^^^^^  ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ProcessJobsResult` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 16 -     Processed(LockedJob, Status),
[INFO] [stdout] 16 +     Processed((), ()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/types.rs:18:11
[INFO] [stdout]    |
[INFO] [stdout] 18 |     Error(Error),
[INFO] [stdout]    |     ----- ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ProcessJobsResult` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 18 -     Error(Error),
[INFO] [stdout] 18 +     Error(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1m 05s
[INFO] running `Command { std: "docker" "inspect" "39a368fe198096da3bb46becf35fbd7b2d931b56f7b8fb358400ddb45e3870bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39a368fe198096da3bb46becf35fbd7b2d931b56f7b8fb358400ddb45e3870bb", kill_on_drop: false }`
[INFO] [stdout] 39a368fe198096da3bb46becf35fbd7b2d931b56f7b8fb358400ddb45e3870bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2b6ab584ccd691329a10ed9a58e1e8a90da21a81cbff45c50b858f156be73cec
[INFO] running `Command { std: "docker" "start" "-a" "2b6ab584ccd691329a10ed9a58e1e8a90da21a81cbff45c50b858f156be73cec", kill_on_drop: false }`
[INFO] [stderr] warning: fields `0` and `1` are never read
[INFO] [stderr]   --> src/types.rs:16:15
[INFO] [stderr]    |
[INFO] [stderr] 16 |     Processed(LockedJob, Status),
[INFO] [stderr]    |     --------- ^^^^^^^^^  ^^^^^^
[INFO] [stderr]    |     |
[INFO] [stderr]    |     fields in this variant
[INFO] [stderr]    |
[INFO] [stderr]    = note: `ProcessJobsResult` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stderr]    |
[INFO] [stderr] 16 -     Processed(LockedJob, Status),
[INFO] [stderr] 16 +     Processed((), ()),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]   --> src/types.rs:18:11
[INFO] [stderr]    |
[INFO] [stderr] 18 |     Error(Error),
[INFO] [stderr]    |     ----- ^^^^^
[INFO] [stderr]    |     |
[INFO] [stderr]    |     field in this variant
[INFO] [stderr]    |
[INFO] [stderr]    = note: `ProcessJobsResult` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stderr]    |
[INFO] [stderr] 18 -     Error(Error),
[INFO] [stderr] 18 +     Error(()),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: `muffin` (lib) generated 2 warnings
[INFO] [stderr] warning: `muffin` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/muffin-d31a5c3264a39ea5)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test backoff::tests::exponential_fn ... ok
[INFO] [stdout] test backoff::tests::linear_fn ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.08s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/priority.rs (/opt/rustwide/target/debug/deps/priority-976fc2777f4d0b49)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::lowest_first ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- tests::lowest_first stdout ----
[INFO] [stdout] Error: Mongo(Error { kind: ServerSelection { message: "Server selection timeout: No available servers. Topology: { Type: Unknown, Servers: [ { Address: localhost:27017, Type: Unknown, Error: Connection refused (os error 111) }, ] }" }, labels: {}, wire_version: None, source: None })
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     tests::lowest_first
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 30.03s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--test priority`
[INFO] running `Command { std: "docker" "inspect" "2b6ab584ccd691329a10ed9a58e1e8a90da21a81cbff45c50b858f156be73cec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b6ab584ccd691329a10ed9a58e1e8a90da21a81cbff45c50b858f156be73cec", kill_on_drop: false }`
[INFO] [stdout] 2b6ab584ccd691329a10ed9a58e1e8a90da21a81cbff45c50b858f156be73cec
