[INFO] fetching crate slings 0.3.46...
[INFO] testing slings-0.3.46 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate slings 0.3.46 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate slings 0.3.46
[INFO] finished tweaking crates.io crate slings 0.3.46
[INFO] tweaked toml for crates.io crate slings 0.3.46 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate slings 0.3.46 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate slings 0.3.46 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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9a6252d300a0112a10272f7de9ade4e9f3c534c15e2e65d4c6904e7b7567ab94
[INFO] running `Command { std: "docker" "start" "-a" "9a6252d300a0112a10272f7de9ade4e9f3c534c15e2e65d4c6904e7b7567ab94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a6252d300a0112a10272f7de9ade4e9f3c534c15e2e65d4c6904e7b7567ab94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a6252d300a0112a10272f7de9ade4e9f3c534c15e2e65d4c6904e7b7567ab94", kill_on_drop: false }`
[INFO] [stdout] 9a6252d300a0112a10272f7de9ade4e9f3c534c15e2e65d4c6904e7b7567ab94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 944d5e0437a97d51697fad44ccfdbbc1c5f79dfd1e840da231c0b0f4933800aa
[INFO] running `Command { std: "docker" "start" "-a" "944d5e0437a97d51697fad44ccfdbbc1c5f79dfd1e840da231c0b0f4933800aa", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.146
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling io-uring v0.6.0
[INFO] [stderr]    Compiling async-task v4.4.0
[INFO] [stderr]    Compiling scoped-tls v1.0.1
[INFO] [stderr]    Compiling futures-io v0.3.28
[INFO] [stderr]    Compiling socket2 v0.5.3
[INFO] [stderr]    Compiling slings v0.3.46 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/driver/mod.rs:192:13
[INFO] [stdout]     |
[INFO] [stdout] 192 |     Ignored(Box<dyn Any>),
[INFO] [stdout]     |     ------- ^^^^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[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] 192 -     Ignored(Box<dyn Any>),
[INFO] [stdout] 192 +     Ignored(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.38s
[INFO] running `Command { std: "docker" "inspect" "944d5e0437a97d51697fad44ccfdbbc1c5f79dfd1e840da231c0b0f4933800aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "944d5e0437a97d51697fad44ccfdbbc1c5f79dfd1e840da231c0b0f4933800aa", kill_on_drop: false }`
[INFO] [stdout] 944d5e0437a97d51697fad44ccfdbbc1c5f79dfd1e840da231c0b0f4933800aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be7d7cc5745edad4bcb7c0b1c599e9f2601d2f40ee6aafefe16af0b2c88f2118
[INFO] running `Command { std: "docker" "start" "-a" "be7d7cc5745edad4bcb7c0b1c599e9f2601d2f40ee6aafefe16af0b2c88f2118", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/driver/mod.rs:192:13
[INFO] [stdout]     |
[INFO] [stdout] 192 |     Ignored(Box<dyn Any>),
[INFO] [stdout]     |     ------- ^^^^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[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] 192 -     Ignored(Box<dyn Any>),
[INFO] [stdout] 192 +     Ignored(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling slings v0.3.46 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/driver/mod.rs:192:13
[INFO] [stdout]     |
[INFO] [stdout] 192 |     Ignored(Box<dyn Any>),
[INFO] [stdout]     |     ------- ^^^^^^^^^^^^
[INFO] [stdout]     |     |
[INFO] [stdout]     |     field in this variant
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[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] 192 -     Ignored(Box<dyn Any>),
[INFO] [stdout] 192 +     Ignored(()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 6.30s
[INFO] running `Command { std: "docker" "inspect" "be7d7cc5745edad4bcb7c0b1c599e9f2601d2f40ee6aafefe16af0b2c88f2118", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be7d7cc5745edad4bcb7c0b1c599e9f2601d2f40ee6aafefe16af0b2c88f2118", kill_on_drop: false }`
[INFO] [stdout] be7d7cc5745edad4bcb7c0b1c599e9f2601d2f40ee6aafefe16af0b2c88f2118
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2e8305a264210a8db1d360d35a2273869e2c0cf9fcb96e372f579aec5d00cc8b
[INFO] running `Command { std: "docker" "start" "-a" "2e8305a264210a8db1d360d35a2273869e2c0cf9fcb96e372f579aec5d00cc8b", kill_on_drop: false }`
[INFO] [stderr] warning: field `0` is never read
[INFO] [stderr]    --> src/driver/mod.rs:192:13
[INFO] [stderr]     |
[INFO] [stderr] 192 |     Ignored(Box<dyn Any>),
[INFO] [stderr]     |     ------- ^^^^^^^^^^^^
[INFO] [stderr]     |     |
[INFO] [stderr]     |     field in this variant
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[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] 192 -     Ignored(Box<dyn Any>),
[INFO] [stderr] 192 +     Ignored(()),
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `slings` (lib) generated 1 warning
[INFO] [stderr] warning: `slings` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/slings-310b3b4aac1fdadc)
[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 slings
[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" "2e8305a264210a8db1d360d35a2273869e2c0cf9fcb96e372f579aec5d00cc8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e8305a264210a8db1d360d35a2273869e2c0cf9fcb96e372f579aec5d00cc8b", kill_on_drop: false }`
[INFO] [stdout] 2e8305a264210a8db1d360d35a2273869e2c0cf9fcb96e372f579aec5d00cc8b