[INFO] fetching crate slog-async 2.7.0...
[INFO] checking slog-async-2.7.0 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] extracting crate slog-async 2.7.0 into /workspace/builds/worker-50/source
[INFO] validating manifest of crates.io crate slog-async 2.7.0 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate slog-async 2.7.0
[INFO] finished tweaking crates.io crate slog-async 2.7.0
[INFO] tweaked toml for crates.io crate slog-async 2.7.0 written to /workspace/builds/worker-50/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d9a59368a7341b2c07e5fcb379db0d4113020a0279ade70065c9d395b258ceae
[INFO] running `Command { std: "docker" "start" "-a" "d9a59368a7341b2c07e5fcb379db0d4113020a0279ade70065c9d395b258ceae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9a59368a7341b2c07e5fcb379db0d4113020a0279ade70065c9d395b258ceae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9a59368a7341b2c07e5fcb379db0d4113020a0279ade70065c9d395b258ceae", kill_on_drop: false }`
[INFO] [stdout] d9a59368a7341b2c07e5fcb379db0d4113020a0279ade70065c9d395b258ceae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8a8b94d5aabc8c995c0ddad129e709d8e0baf031970896552b27f9e27cf839f8
[INFO] running `Command { std: "docker" "start" "-a" "8a8b94d5aabc8c995c0ddad129e709d8e0baf031970896552b27f9e27cf839f8", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling slog v2.7.0
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]    Compiling slog-async v2.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> lib.rs:223:17
[INFO] [stdout]     |
[INFO] [stdout] 223 |             err.description(),
[INFO] [stdout]     |                 ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> lib.rs:223:17
[INFO] [stdout]     |
[INFO] [stdout] 223 |             err.description(),
[INFO] [stdout]     |                 ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` 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 1.44s
[INFO] running `Command { std: "docker" "inspect" "8a8b94d5aabc8c995c0ddad129e709d8e0baf031970896552b27f9e27cf839f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a8b94d5aabc8c995c0ddad129e709d8e0baf031970896552b27f9e27cf839f8", kill_on_drop: false }`
[INFO] [stdout] 8a8b94d5aabc8c995c0ddad129e709d8e0baf031970896552b27f9e27cf839f8