[INFO] fetching crate starchart-backends 0.2.0...
[INFO] testing starchart-backends-0.2.0 against try#2440211fe03bc45c89b6dc1a3df18382ce91e32b for pr-146098-1
[INFO] extracting crate starchart-backends 0.2.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate starchart-backends 0.2.0
[INFO] finished tweaking crates.io crate starchart-backends 0.2.0
[INFO] tweaked toml for crates.io crate starchart-backends 0.2.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate starchart-backends 0.2.0 on toolchain 2440211fe03bc45c89b6dc1a3df18382ce91e32b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 80 packages to latest compatible versions
[INFO] [stderr]       Adding bincode v1.3.3 (available: v2.0.1)
[INFO] [stderr]       Adding dashmap v5.5.3 (available: v6.1.0)
[INFO] [stderr]       Adding serde_yaml v0.8.26 (available: v0.9.34+deprecated)
[INFO] [stderr]       Adding toml v0.5.11 (available: v0.9.7)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 280d875e33f6f8ec72d9f825627bf97839288e57ccbf5755c5797dd333c53d11
[INFO] running `Command { std: "docker" "start" "-a" "280d875e33f6f8ec72d9f825627bf97839288e57ccbf5755c5797dd333c53d11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "280d875e33f6f8ec72d9f825627bf97839288e57ccbf5755c5797dd333c53d11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "280d875e33f6f8ec72d9f825627bf97839288e57ccbf5755c5797dd333c53d11", kill_on_drop: false }`
[INFO] [stdout] 280d875e33f6f8ec72d9f825627bf97839288e57ccbf5755c5797dd333c53d11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 50f9dab1367f7b6a9de331106055b97bafe78eb110dafaaa1ac40efbd34426e6
[INFO] running `Command { std: "docker" "start" "-a" "50f9dab1367f7b6a9de331106055b97bafe78eb110dafaaa1ac40efbd34426e6", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.27
[INFO] [stderr]    Compiling libc v0.2.176
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling smallvec v1.15.1
[INFO] [stderr]    Compiling instant v0.1.13
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]    Compiling starchart v0.19.0
[INFO] [stderr]    Compiling starchart-backends v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.01s
[INFO] running `Command { std: "docker" "inspect" "50f9dab1367f7b6a9de331106055b97bafe78eb110dafaaa1ac40efbd34426e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50f9dab1367f7b6a9de331106055b97bafe78eb110dafaaa1ac40efbd34426e6", kill_on_drop: false }`
[INFO] [stdout] 50f9dab1367f7b6a9de331106055b97bafe78eb110dafaaa1ac40efbd34426e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 736f6f530dd1403c3bba6b2fdeda7520da1577c4b5dc9c3cb74e4251c16e5c4f
[INFO] running `Command { std: "docker" "start" "-a" "736f6f530dd1403c3bba6b2fdeda7520da1577c4b5dc9c3cb74e4251c16e5c4f", kill_on_drop: false }`
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]    Compiling tokio v1.47.1
[INFO] [stderr]    Compiling starchart-backends v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `TestSettings` is never constructed
[INFO] [stdout]   --> src/testing.rs:54:12
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub struct TestSettings {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 5.08s
[INFO] running `Command { std: "docker" "inspect" "736f6f530dd1403c3bba6b2fdeda7520da1577c4b5dc9c3cb74e4251c16e5c4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "736f6f530dd1403c3bba6b2fdeda7520da1577c4b5dc9c3cb74e4251c16e5c4f", kill_on_drop: false }`
[INFO] [stdout] 736f6f530dd1403c3bba6b2fdeda7520da1577c4b5dc9c3cb74e4251c16e5c4f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fcacc1f3deffe741336e67822c2dbbcee766a3893cd51c269b4e1caf0ad98b17
[INFO] running `Command { std: "docker" "start" "-a" "fcacc1f3deffe741336e67822c2dbbcee766a3893cd51c269b4e1caf0ad98b17", kill_on_drop: false }`
[INFO] [stderr] warning: struct `TestSettings` is never constructed
[INFO] [stderr]   --> src/testing.rs:54:12
[INFO] [stderr]    |
[INFO] [stderr] 54 | pub struct TestSettings {
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `starchart-backends` (lib test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/starchart_backends-821aa80d1b989795)
[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 starchart_backends
[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" "fcacc1f3deffe741336e67822c2dbbcee766a3893cd51c269b4e1caf0ad98b17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcacc1f3deffe741336e67822c2dbbcee766a3893cd51c269b4e1caf0ad98b17", kill_on_drop: false }`
[INFO] [stdout] fcacc1f3deffe741336e67822c2dbbcee766a3893cd51c269b4e1caf0ad98b17