[INFO] cloning repository https://github.com/loiclec/fuzzcheck-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/loiclec/fuzzcheck-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Floiclec%2Ffuzzcheck-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Floiclec%2Ffuzzcheck-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0af1dd8c5e69fd28058ab8a9fe211fc5510df7b4
[INFO] checking loiclec/fuzzcheck-rs against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Floiclec%2Ffuzzcheck-rs" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/loiclec/fuzzcheck-rs on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/loiclec/fuzzcheck-rs
[INFO] finished tweaking git repo https://github.com/loiclec/fuzzcheck-rs
[INFO] tweaked toml for git repo https://github.com/loiclec/fuzzcheck-rs written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fastrand v1.5.0
[INFO] [stderr]   Downloaded decent-serde-json-derive-alternative v0.4.0
[INFO] [stderr]   Downloaded decent-toml-rs-alternative v0.3.0
[INFO] [stderr]   Downloaded decent-serde-toml-derive-alternative v0.3.0
[INFO] [stderr]   Downloaded decent-serde-json-alternative v0.4.0
[INFO] [stderr]   Downloaded json v0.12.4
[INFO] [stderr]   Downloaded decent-synquote-alternative v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0cb0c78208791edd834357267aa166fa3f1df9ac761857341292c349f78d75c0
[INFO] running `Command { std: "docker" "start" "-a" "0cb0c78208791edd834357267aa166fa3f1df9ac761857341292c349f78d75c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0cb0c78208791edd834357267aa166fa3f1df9ac761857341292c349f78d75c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cb0c78208791edd834357267aa166fa3f1df9ac761857341292c349f78d75c0", kill_on_drop: false }`
[INFO] [stdout] 0cb0c78208791edd834357267aa166fa3f1df9ac761857341292c349f78d75c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 532aae727fa412c41079d12235b291249a9768bcb3a17ef00ab29182131c18ad
[INFO] running `Command { std: "docker" "start" "-a" "532aae727fa412c41079d12235b291249a9768bcb3a17ef00ab29182131c18ad", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]     Checking fuzzcheck_traits v0.6.0 (/opt/rustwide/workdir/fuzzcheck_traits)
[INFO] [stderr]     Checking fastrand v1.5.0
[INFO] [stderr]    Compiling cargo-fuzzcheck v0.6.0 (/opt/rustwide/workdir/cargo-fuzzcheck)
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling fuzzcheck v0.6.0 (/opt/rustwide/workdir/fuzzcheck)
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking decent-synquote-alternative v0.3.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]     Checking fuzzcheck_serializer v0.6.0 (/opt/rustwide/workdir/fuzzcheck_serializer)
[INFO] [stderr]     Checking fuzzcheck_common v0.6.0 (/opt/rustwide/workdir/fuzzcheck_common)
[INFO] [stderr]     Checking fuzzcheck_mutators_derive v0.6.0 (/opt/rustwide/workdir/fuzzcheck_mutators_derive)
[INFO] [stderr]    Compiling decent-serde-toml-derive-alternative v0.3.0
[INFO] [stdout] warning: constant is never used: `EWOULDBLOCK`
[INFO] [stdout]    --> fuzzcheck/src/nix_subset/errno.rs:816:5
[INFO] [stdout]     |
[INFO] [stdout] 816 |     pub const EWOULDBLOCK: Errno = Errno::EAGAIN;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `EDEADLOCK`
[INFO] [stdout]    --> fuzzcheck/src/nix_subset/errno.rs:817:5
[INFO] [stdout]     |
[INFO] [stdout] 817 |     pub const EDEADLOCK: Errno = Errno::EDEADLK;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ENOTSUP`
[INFO] [stdout]    --> fuzzcheck/src/nix_subset/errno.rs:818:5
[INFO] [stdout]     |
[INFO] [stdout] 818 |     pub const ENOTSUP: Errno = Errno::EOPNOTSUPP;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `type_of_thread_id`
[INFO] [stdout]    --> fuzzcheck/src/nix_subset/signal.rs:423:1
[INFO] [stdout]     |
[INFO] [stdout] 423 | pub type type_of_thread_id = libc::pid_t;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `EWOULDBLOCK`
[INFO] [stdout]    --> fuzzcheck/src/nix_subset/errno.rs:816:5
[INFO] [stdout]     |
[INFO] [stdout] 816 |     pub const EWOULDBLOCK: Errno = Errno::EAGAIN;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `EDEADLOCK`
[INFO] [stdout]    --> fuzzcheck/src/nix_subset/errno.rs:817:5
[INFO] [stdout]     |
[INFO] [stdout] 817 |     pub const EDEADLOCK: Errno = Errno::EDEADLK;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ENOTSUP`
[INFO] [stdout]    --> fuzzcheck/src/nix_subset/errno.rs:818:5
[INFO] [stdout]     |
[INFO] [stdout] 818 |     pub const ENOTSUP: Errno = Errno::EOPNOTSUPP;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `type_of_thread_id`
[INFO] [stdout]    --> fuzzcheck/src/nix_subset/signal.rs:423:1
[INFO] [stdout]     |
[INFO] [stdout] 423 | pub type type_of_thread_id = libc::pid_t;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking decent-toml-rs-alternative v0.3.0
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking fuzzcheck_mutators v0.6.0 (/opt/rustwide/workdir/fuzzcheck_mutators)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.06s
[INFO] running `Command { std: "docker" "inspect" "532aae727fa412c41079d12235b291249a9768bcb3a17ef00ab29182131c18ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "532aae727fa412c41079d12235b291249a9768bcb3a17ef00ab29182131c18ad", kill_on_drop: false }`
[INFO] [stdout] 532aae727fa412c41079d12235b291249a9768bcb3a17ef00ab29182131c18ad