[INFO] fetching crate fiber 0.1.0...
[INFO] checking fiber-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate fiber 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate fiber 0.1.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fiber 0.1.0
[INFO] finished tweaking crates.io crate fiber 0.1.0
[INFO] tweaked toml for crates.io crate fiber 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 12 packages
[INFO] [stderr]       Adding dtoa v0.2.2 (latest: v1.0.9)
[INFO] [stderr]       Adding glob v0.2.11 (latest: v0.3.1)
[INFO] [stderr]       Adding itoa v0.1.1 (latest: v1.0.11)
[INFO] [stderr]       Adding num-traits v0.1.43 (latest: v0.2.18)
[INFO] [stderr]       Adding pest v0.4.1 (latest: v2.7.9)
[INFO] [stderr]       Adding quick-error v1.2.3 (latest: v2.0.1)
[INFO] [stderr]       Adding serde v0.8.23 (latest: v1.0.197)
[INFO] [stderr]       Adding serde_json v0.8.6 (latest: v1.0.115)
[INFO] [stderr]       Adding tera v0.1.3 (latest: v1.19.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_json v0.8.6
[INFO] [stderr]   Downloaded dtoa v0.2.2
[INFO] [stderr]   Downloaded itoa v0.1.1
[INFO] [stderr]   Downloaded pest v0.4.1
[INFO] [stderr]   Downloaded glob v0.2.11
[INFO] [stderr]   Downloaded tera v0.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 274f1744b269ccb1951a954c4ac431aa717061cfd7fba54c48cba332c2417e19
[INFO] running `Command { std: "docker" "start" "-a" "274f1744b269ccb1951a954c4ac431aa717061cfd7fba54c48cba332c2417e19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "274f1744b269ccb1951a954c4ac431aa717061cfd7fba54c48cba332c2417e19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "274f1744b269ccb1951a954c4ac431aa717061cfd7fba54c48cba332c2417e19", kill_on_drop: false }`
[INFO] [stdout] 274f1744b269ccb1951a954c4ac431aa717061cfd7fba54c48cba332c2417e19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 96b419c4696c5f9348894bc34adff285985aa3fd1644872f8e237e48f2a2fabd
[INFO] running `Command { std: "docker" "start" "-a" "96b419c4696c5f9348894bc34adff285985aa3fd1644872f8e237e48f2a2fabd", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]     Checking itoa v0.1.1
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]     Checking dtoa v0.2.2
[INFO] [stderr]     Checking pest v0.4.1
[INFO] [stderr]     Checking glob v0.2.11
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking serde_json v0.8.6
[INFO] [stderr]     Checking tera v0.1.3
[INFO] [stderr]     Checking fiber v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.37s
[INFO] running `Command { std: "docker" "inspect" "96b419c4696c5f9348894bc34adff285985aa3fd1644872f8e237e48f2a2fabd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96b419c4696c5f9348894bc34adff285985aa3fd1644872f8e237e48f2a2fabd", kill_on_drop: false }`
[INFO] [stdout] 96b419c4696c5f9348894bc34adff285985aa3fd1644872f8e237e48f2a2fabd
[INFO] checking fiber-0.1.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate fiber 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate fiber 0.1.0 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fiber 0.1.0
[INFO] finished tweaking crates.io crate fiber 0.1.0
[INFO] tweaked toml for crates.io crate fiber 0.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 12 packages
[INFO] [stderr]       Adding dtoa v0.2.2 (latest: v1.0.9)
[INFO] [stderr]       Adding glob v0.2.11 (latest: v0.3.1)
[INFO] [stderr]       Adding itoa v0.1.1 (latest: v1.0.11)
[INFO] [stderr]       Adding num-traits v0.1.43 (latest: v0.2.18)
[INFO] [stderr]       Adding pest v0.4.1 (latest: v2.7.9)
[INFO] [stderr]       Adding quick-error v1.2.3 (latest: v2.0.1)
[INFO] [stderr]       Adding serde v0.8.23 (latest: v1.0.197)
[INFO] [stderr]       Adding serde_json v0.8.6 (latest: v1.0.115)
[INFO] [stderr]       Adding tera v0.1.3 (latest: v1.19.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc4a14ab6490fa405fa10126488d5228dafa0ea44c7600f2b885a915bc909df4
[INFO] running `Command { std: "docker" "start" "-a" "cc4a14ab6490fa405fa10126488d5228dafa0ea44c7600f2b885a915bc909df4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc4a14ab6490fa405fa10126488d5228dafa0ea44c7600f2b885a915bc909df4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc4a14ab6490fa405fa10126488d5228dafa0ea44c7600f2b885a915bc909df4", kill_on_drop: false }`
[INFO] [stdout] cc4a14ab6490fa405fa10126488d5228dafa0ea44c7600f2b885a915bc909df4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8a6b0c9d4d03e6ea6f0e9437858d1b28f2a128a4ee94a93609ffbe83a5e176ea
[INFO] running `Command { std: "docker" "start" "-a" "8a6b0c9d4d03e6ea6f0e9437858d1b28f2a128a4ee94a93609ffbe83a5e176ea", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]     Checking itoa v0.1.1
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]     Checking dtoa v0.2.2
[INFO] [stderr]     Checking pest v0.4.1
[INFO] [stderr]     Checking glob v0.2.11
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking serde_json v0.8.6
[INFO] [stderr]     Checking tera v0.1.3
[INFO] [stderr]     Checking fiber v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.21s
[INFO] running `Command { std: "docker" "inspect" "8a6b0c9d4d03e6ea6f0e9437858d1b28f2a128a4ee94a93609ffbe83a5e176ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a6b0c9d4d03e6ea6f0e9437858d1b28f2a128a4ee94a93609ffbe83a5e176ea", kill_on_drop: false }`
[INFO] [stdout] 8a6b0c9d4d03e6ea6f0e9437858d1b28f2a128a4ee94a93609ffbe83a5e176ea