[INFO] fetching crate conclusive 1.0.0...
[INFO] checking conclusive-1.0.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate conclusive 1.0.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate conclusive 1.0.0 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 conclusive 1.0.0
[INFO] finished tweaking crates.io crate conclusive 1.0.0
[INFO] tweaked toml for crates.io crate conclusive 1.0.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate conclusive 1.0.0 already has a lockfile, it will not be regenerated
[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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded argh_shared v0.1.8
[INFO] [stderr]   Downloaded tokio-macros v1.8.0
[INFO] [stderr]   Downloaded itoa v1.0.2
[INFO] [stderr]   Downloaded cassowary v0.3.0
[INFO] [stderr]   Downloaded os_str_bytes v6.2.0
[INFO] [stderr]   Downloaded argh_derive v0.1.8
[INFO] [stderr]   Downloaded parking_lot_core v0.9.3
[INFO] [stderr]   Downloaded textwrap v0.15.0
[INFO] [stderr]   Downloaded serde v1.0.140
[INFO] [stderr]   Downloaded clap v3.2.16
[INFO] [stderr]   Downloaded serde_json v1.0.82
[INFO] [stderr]   Downloaded libc v0.2.126
[INFO] [stderr]   Downloaded syn v1.0.98
[INFO] [stderr]   Downloaded tui v0.18.0
[INFO] [stderr]   Downloaded ryu v1.0.10
[INFO] [stderr]   Downloaded serde_derive v1.0.140
[INFO] [stderr]   Downloaded smallvec v1.9.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.42
[INFO] [stderr]   Downloaded quote v1.0.20
[INFO] [stderr]   Downloaded unicode-ident v1.0.2
[INFO] [stderr]   Downloaded argh v0.1.8
[INFO] [stderr]   Downloaded lock_api v0.4.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 0026862cac054d00044af711f92b2281081c1543d41c431011ca9155f7bcb71b
[INFO] running `Command { std: "docker" "start" "-a" "0026862cac054d00044af711f92b2281081c1543d41c431011ca9155f7bcb71b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0026862cac054d00044af711f92b2281081c1543d41c431011ca9155f7bcb71b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0026862cac054d00044af711f92b2281081c1543d41c431011ca9155f7bcb71b", kill_on_drop: false }`
[INFO] [stdout] 0026862cac054d00044af711f92b2281081c1543d41c431011ca9155f7bcb71b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] ce1a8f41347013b54286d6509fb1043e886aaf13587f8f4f2b05fa85ea7ba1cc
[INFO] running `Command { std: "docker" "start" "-a" "ce1a8f41347013b54286d6509fb1043e886aaf13587f8f4f2b05fa85ea7ba1cc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling proc-macro2 v1.0.42
[INFO] [stderr]    Compiling unicode-ident v1.0.2
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]     Checking smallvec v1.9.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling tokio v1.20.1
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.140
[INFO] [stderr]    Compiling serde v1.0.140
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]    Compiling serde_json v1.0.82
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking os_str_bytes v6.2.0
[INFO] [stderr]     Checking http v0.2.8
[INFO] [stderr]    Compiling argh_shared v0.1.8
[INFO] [stderr]     Checking cassowary v0.3.0
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking mio v0.8.4
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking openssl-sys v0.9.75
[INFO] [stderr]     Checking termion v1.5.6
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking http-body v0.4.5
[INFO] [stderr]     Checking clap v3.2.16
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking tui v0.18.0
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]    Compiling openssl-macros v0.1.0
[INFO] [stderr]    Compiling argh_derive v0.1.8
[INFO] [stderr]     Checking openssl v0.10.41
[INFO] [stderr]     Checking argh v0.1.8
[INFO] [stderr]     Checking native-tls v0.2.10
[INFO] [stderr]     Checking tokio-util v0.7.3
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking h2 v0.3.13
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking hyper v0.14.20
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.11
[INFO] [stderr]     Checking conclusive v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.38s
[INFO] running `Command { std: "docker" "inspect" "ce1a8f41347013b54286d6509fb1043e886aaf13587f8f4f2b05fa85ea7ba1cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce1a8f41347013b54286d6509fb1043e886aaf13587f8f4f2b05fa85ea7ba1cc", kill_on_drop: false }`
[INFO] [stdout] ce1a8f41347013b54286d6509fb1043e886aaf13587f8f4f2b05fa85ea7ba1cc
[INFO] checking conclusive-1.0.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate conclusive 1.0.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate conclusive 1.0.0 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 conclusive 1.0.0
[INFO] finished tweaking crates.io crate conclusive 1.0.0
[INFO] tweaked toml for crates.io crate conclusive 1.0.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate crates.io crate conclusive 1.0.0 already has a lockfile, it will not be regenerated
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 7573449e0702c7daab6486d1a9ff402522417b3216daa7199b6ab3307743099f
[INFO] running `Command { std: "docker" "start" "-a" "7573449e0702c7daab6486d1a9ff402522417b3216daa7199b6ab3307743099f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7573449e0702c7daab6486d1a9ff402522417b3216daa7199b6ab3307743099f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7573449e0702c7daab6486d1a9ff402522417b3216daa7199b6ab3307743099f", kill_on_drop: false }`
[INFO] [stdout] 7573449e0702c7daab6486d1a9ff402522417b3216daa7199b6ab3307743099f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 06e9862360d21cf004362f27e2e08fca920caf4e46de554d4b8f2f6995b28db6
[INFO] running `Command { std: "docker" "start" "-a" "06e9862360d21cf004362f27e2e08fca920caf4e46de554d4b8f2f6995b28db6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling proc-macro2 v1.0.42
[INFO] [stderr]    Compiling unicode-ident v1.0.2
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking smallvec v1.9.0
[INFO] [stderr]    Compiling tokio v1.20.1
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]    Compiling serde_derive v1.0.140
[INFO] [stderr]    Compiling serde v1.0.140
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]    Compiling serde_json v1.0.82
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]    Compiling argh_shared v0.1.8
[INFO] [stderr]     Checking os_str_bytes v6.2.0
[INFO] [stderr]     Checking http v0.2.8
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking cassowary v0.3.0
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking http-body v0.4.5
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.8.4
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking openssl-sys v0.9.75
[INFO] [stderr]     Checking termion v1.5.6
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v3.2.16
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking tui v0.18.0
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]    Compiling openssl-macros v0.1.0
[INFO] [stderr]    Compiling argh_derive v0.1.8
[INFO] [stderr]     Checking openssl v0.10.41
[INFO] [stderr]     Checking argh v0.1.8
[INFO] [stderr]     Checking native-tls v0.2.10
[INFO] [stderr]     Checking tokio-util v0.7.3
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking h2 v0.3.13
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking hyper v0.14.20
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.11
[INFO] [stderr]     Checking conclusive v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.59s
[INFO] running `Command { std: "docker" "inspect" "06e9862360d21cf004362f27e2e08fca920caf4e46de554d4b8f2f6995b28db6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06e9862360d21cf004362f27e2e08fca920caf4e46de554d4b8f2f6995b28db6", kill_on_drop: false }`
[INFO] [stdout] 06e9862360d21cf004362f27e2e08fca920caf4e46de554d4b8f2f6995b28db6