[INFO] fetching crate slings 0.3.46...
[INFO] testing slings-0.3.46 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-8
[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 c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ab7c6ad4e58c1a90b3745291b1c47212975447cef5807c70e2f0770dde42ccb8
[INFO] running `Command { std: "docker" "start" "-a" "ab7c6ad4e58c1a90b3745291b1c47212975447cef5807c70e2f0770dde42ccb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ab7c6ad4e58c1a90b3745291b1c47212975447cef5807c70e2f0770dde42ccb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab7c6ad4e58c1a90b3745291b1c47212975447cef5807c70e2f0770dde42ccb8", kill_on_drop: false }`
[INFO] [stdout] ab7c6ad4e58c1a90b3745291b1c47212975447cef5807c70e2f0770dde42ccb8
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5bd7a3808981da2b6310b0d09bfd2d88853225d07f133674f18542f510b9d46e
[INFO] running `Command { std: "docker" "start" "-a" "5bd7a3808981da2b6310b0d09bfd2d88853225d07f133674f18542f510b9d46e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.146
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling io-uring v0.6.0
[INFO] [stderr]    Compiling scoped-tls v1.0.1
[INFO] [stderr]    Compiling pin-project-lite v0.2.9
[INFO] [stderr]    Compiling async-task v4.4.0
[INFO] [stderr]    Compiling futures-io v0.3.28
[INFO] [stderr]    Compiling slab v0.4.8
[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)]` (part of `#[warn(unused)]`) 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 4.67s
[INFO] running `Command { std: "docker" "inspect" "5bd7a3808981da2b6310b0d09bfd2d88853225d07f133674f18542f510b9d46e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bd7a3808981da2b6310b0d09bfd2d88853225d07f133674f18542f510b9d46e", kill_on_drop: false }`
[INFO] [stdout] 5bd7a3808981da2b6310b0d09bfd2d88853225d07f133674f18542f510b9d46e
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1cae9142ec4ad6aa29b5a78f3457a5356992ad1d549af6457bbbced1f1c9b357
[INFO] running `Command { std: "docker" "start" "-a" "1cae9142ec4ad6aa29b5a78f3457a5356992ad1d549af6457bbbced1f1c9b357", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]    Compiling memchr v2.5.0
[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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(unused)]`) 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 7.43s
[INFO] running `Command { std: "docker" "inspect" "1cae9142ec4ad6aa29b5a78f3457a5356992ad1d549af6457bbbced1f1c9b357", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cae9142ec4ad6aa29b5a78f3457a5356992ad1d549af6457bbbced1f1c9b357", kill_on_drop: false }`
[INFO] [stdout] 1cae9142ec4ad6aa29b5a78f3457a5356992ad1d549af6457bbbced1f1c9b357
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 53e8a053bd4c3cda2eba96ae514e5f4638589587f1a4d5b1438337b24859c7ed
[INFO] running `Command { std: "docker" "start" "-a" "53e8a053bd4c3cda2eba96ae514e5f4638589587f1a4d5b1438337b24859c7ed", 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)]` (part of `#[warn(unused)]`) 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 0.06s
[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" "53e8a053bd4c3cda2eba96ae514e5f4638589587f1a4d5b1438337b24859c7ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53e8a053bd4c3cda2eba96ae514e5f4638589587f1a4d5b1438337b24859c7ed", kill_on_drop: false }`
[INFO] [stdout] 53e8a053bd4c3cda2eba96ae514e5f4638589587f1a4d5b1438337b24859c7ed