[INFO] fetching crate smart-read 0.9.0...
[INFO] building smart-read-0.9.0 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate smart-read 0.9.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate smart-read 0.9.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate smart-read 0.9.0
[INFO] tweaked toml for crates.io crate smart-read 0.9.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate smart-read 0.9.0 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate smart-read 0.9.0 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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 23ad43573601beb056d37d42edb60c7bb019c713d57cc0fe16db08984c910366
[INFO] running `Command { std: "docker" "start" "-a" "23ad43573601beb056d37d42edb60c7bb019c713d57cc0fe16db08984c910366", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "23ad43573601beb056d37d42edb60c7bb019c713d57cc0fe16db08984c910366", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23ad43573601beb056d37d42edb60c7bb019c713d57cc0fe16db08984c910366", kill_on_drop: false }`
[INFO] [stdout] 23ad43573601beb056d37d42edb60c7bb019c713d57cc0fe16db08984c910366
[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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c3ec897ec7cb50ce17bf38df2542d9871550c2b00d5bcfd6d72a5edb61482afe
[INFO] running `Command { std: "docker" "start" "-a" "c3ec897ec7cb50ce17bf38df2542d9871550c2b00d5bcfd6d72a5edb61482afe", kill_on_drop: false }`
[INFO] [stderr]    Compiling smart-read v0.9.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `let_chains` has been stable since 1.88.0 and no longer requires an attribute to enable
[INFO] [stdout]    --> src/lib.rs:142:12
[INFO] [stdout]     |
[INFO] [stdout] 142 | #![feature(let_chains)]
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "c3ec897ec7cb50ce17bf38df2542d9871550c2b00d5bcfd6d72a5edb61482afe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3ec897ec7cb50ce17bf38df2542d9871550c2b00d5bcfd6d72a5edb61482afe", kill_on_drop: false }`
[INFO] [stdout] c3ec897ec7cb50ce17bf38df2542d9871550c2b00d5bcfd6d72a5edb61482afe
[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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] acfbb93ee1a1f4c1fb10e8f2cc79d4cc195cf916587427b3e9723f8e9bb4612c
[INFO] running `Command { std: "docker" "start" "-a" "acfbb93ee1a1f4c1fb10e8f2cc79d4cc195cf916587427b3e9723f8e9bb4612c", kill_on_drop: false }`
[INFO] [stdout] warning: the feature `let_chains` has been stable since 1.88.0 and no longer requires an attribute to enable
[INFO] [stdout]    --> src/lib.rs:142:12
[INFO] [stdout]     |
[INFO] [stdout] 142 | #![feature(let_chains)]
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling smart-read v0.9.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `let_chains` has been stable since 1.88.0 and no longer requires an attribute to enable
[INFO] [stdout]    --> src/lib.rs:142:12
[INFO] [stdout]     |
[INFO] [stdout] 142 | #![feature(let_chains)]
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `Command { std: "docker" "inspect" "acfbb93ee1a1f4c1fb10e8f2cc79d4cc195cf916587427b3e9723f8e9bb4612c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acfbb93ee1a1f4c1fb10e8f2cc79d4cc195cf916587427b3e9723f8e9bb4612c", kill_on_drop: false }`
[INFO] [stdout] acfbb93ee1a1f4c1fb10e8f2cc79d4cc195cf916587427b3e9723f8e9bb4612c