[INFO] fetching crate cap-std 0.15.4...
[INFO] checking cap-std-0.15.4 against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] extracting crate cap-std 0.15.4 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate cap-std 0.15.4 on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cap-std 0.15.4
[INFO] finished tweaking crates.io crate cap-std 0.15.4
[INFO] tweaked toml for crates.io crate cap-std 0.15.4 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded arf-strings v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d3149cc14d1581e629a5cc5c331533ea6f708d65de8788ce8b835450c26d34f0
[INFO] running `Command { std: "docker" "start" "-a" "d3149cc14d1581e629a5cc5c331533ea6f708d65de8788ce8b835450c26d34f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d3149cc14d1581e629a5cc5c331533ea6f708d65de8788ce8b835450c26d34f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3149cc14d1581e629a5cc5c331533ea6f708d65de8788ce8b835450c26d34f0", kill_on_drop: false }`
[INFO] [stdout] d3149cc14d1581e629a5cc5c331533ea6f708d65de8788ce8b835450c26d34f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 277f74b466d87867016714c5584053589a7ccf54763f643761fe8042d2f49c57
[INFO] running `Command { std: "docker" "start" "-a" "277f74b466d87867016714c5584053589a7ccf54763f643761fe8042d2f49c57", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.3
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking maybe-owned v0.3.4
[INFO] [stderr]     Checking ambient-authority v0.0.0
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling io-lifetimes v0.2.0
[INFO] [stderr]    Compiling posish v0.15.5
[INFO] [stderr]    Compiling unsafe-io v0.7.1
[INFO] [stderr]    Compiling cap-primitives v0.15.4
[INFO] [stderr]    Compiling cap-std v0.15.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking errno v0.2.7
[INFO] [stderr]     Checking fs-set-times v0.5.1
[INFO] [stdout] warning: the feature `seek_convenience` has been stable since 1.51.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:28:39
[INFO] [stdout]    |
[INFO] [stdout] 28 | #![cfg_attr(seek_convenience, feature(seek_convenience))]
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `seek_convenience` has been stable since 1.51.0 and no longer requires an attribute to enable
[INFO] [stdout]   --> src/lib.rs:28:39
[INFO] [stdout]    |
[INFO] [stdout] 28 | #![cfg_attr(seek_convenience, feature(seek_convenience))]
[INFO] [stdout]    |                                       ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.01s
[INFO] running `Command { std: "docker" "inspect" "277f74b466d87867016714c5584053589a7ccf54763f643761fe8042d2f49c57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "277f74b466d87867016714c5584053589a7ccf54763f643761fe8042d2f49c57", kill_on_drop: false }`
[INFO] [stdout] 277f74b466d87867016714c5584053589a7ccf54763f643761fe8042d2f49c57