[INFO] fetching crate sleuth-mutator 0.2.1...
[INFO] checking sleuth-mutator-0.2.1 against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] extracting crate sleuth-mutator 0.2.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate sleuth-mutator 0.2.1 on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sleuth-mutator 0.2.1
[INFO] finished tweaking crates.io crate sleuth-mutator 0.2.1
[INFO] tweaked toml for crates.io crate sleuth-mutator 0.2.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 6 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4e6df242b4f8fe5f9ff61d14bb59b7a71ccf2b7b8282dc4f9f1b2b1f80a42f8a
[INFO] running `Command { std: "docker" "start" "-a" "4e6df242b4f8fe5f9ff61d14bb59b7a71ccf2b7b8282dc4f9f1b2b1f80a42f8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e6df242b4f8fe5f9ff61d14bb59b7a71ccf2b7b8282dc4f9f1b2b1f80a42f8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e6df242b4f8fe5f9ff61d14bb59b7a71ccf2b7b8282dc4f9f1b2b1f80a42f8a", kill_on_drop: false }`
[INFO] [stdout] 4e6df242b4f8fe5f9ff61d14bb59b7a71ccf2b7b8282dc4f9f1b2b1f80a42f8a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 02ea382f2cb0767b6d568bf7d635fcba908276819cde79b8d028d53311c925cb
[INFO] running `Command { std: "docker" "start" "-a" "02ea382f2cb0767b6d568bf7d635fcba908276819cde79b8d028d53311c925cb", kill_on_drop: false }`
[INFO] [stderr]     Checking heck v0.5.0
[INFO] [stderr]     Checking syn v2.0.77
[INFO] [stderr]     Checking sleuth-mutator v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.44s
[INFO] running `Command { std: "docker" "inspect" "02ea382f2cb0767b6d568bf7d635fcba908276819cde79b8d028d53311c925cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02ea382f2cb0767b6d568bf7d635fcba908276819cde79b8d028d53311c925cb", kill_on_drop: false }`
[INFO] [stdout] 02ea382f2cb0767b6d568bf7d635fcba908276819cde79b8d028d53311c925cb
[INFO] checking sleuth-mutator-0.2.1 against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] extracting crate sleuth-mutator 0.2.1 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate sleuth-mutator 0.2.1 on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sleuth-mutator 0.2.1
[INFO] finished tweaking crates.io crate sleuth-mutator 0.2.1
[INFO] tweaked toml for crates.io crate sleuth-mutator 0.2.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 6 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fdbb01555908ddb9a4fb8fc6bcd278a2e5c34611278fe8410478257af799188a
[INFO] running `Command { std: "docker" "start" "-a" "fdbb01555908ddb9a4fb8fc6bcd278a2e5c34611278fe8410478257af799188a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fdbb01555908ddb9a4fb8fc6bcd278a2e5c34611278fe8410478257af799188a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fdbb01555908ddb9a4fb8fc6bcd278a2e5c34611278fe8410478257af799188a", kill_on_drop: false }`
[INFO] [stdout] fdbb01555908ddb9a4fb8fc6bcd278a2e5c34611278fe8410478257af799188a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] adb7fb977043947de846dced96ee11414e12e485b65511a1e4d65408bf98bde5
[INFO] running `Command { std: "docker" "start" "-a" "adb7fb977043947de846dced96ee11414e12e485b65511a1e4d65408bf98bde5", kill_on_drop: false }`
[INFO] [stderr]     Checking heck v0.5.0
[INFO] [stderr]     Checking syn v2.0.77
[INFO] [stderr]     Checking sleuth-mutator v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.41s
[INFO] running `Command { std: "docker" "inspect" "adb7fb977043947de846dced96ee11414e12e485b65511a1e4d65408bf98bde5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adb7fb977043947de846dced96ee11414e12e485b65511a1e4d65408bf98bde5", kill_on_drop: false }`
[INFO] [stdout] adb7fb977043947de846dced96ee11414e12e485b65511a1e4d65408bf98bde5