[INFO] cloning repository https://github.com/johnbotris/entiffen
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/johnbotris/entiffen" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnbotris%2Fentiffen", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnbotris%2Fentiffen'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 912b46cc1110c2f458e566a104ab1a2cd5e8cfd1
[INFO] checking johnbotris/entiffen against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnbotris%2Fentiffen" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/johnbotris/entiffen 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 git repo https://github.com/johnbotris/entiffen
[INFO] finished tweaking git repo https://github.com/johnbotris/entiffen
[INFO] tweaked toml for git repo https://github.com/johnbotris/entiffen written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/johnbotris/entiffen 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]      Locking 1 package
[INFO] [stderr]       Adding entiffen v0.1.0 (/workspace/builds/worker-4-tc1/source)
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded imagepipe v0.4.0
[INFO] [stderr]   Downloaded enumn v0.1.3
[INFO] [stderr]   Downloaded rawloader v0.36.3
[INFO] [stderr]   Downloaded rawloader v0.37.0
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 841cad651f70f558e6680c784bcd5c99ee66229c23214e21c03d763473bf7020
[INFO] running `Command { std: "docker" "start" "-a" "841cad651f70f558e6680c784bcd5c99ee66229c23214e21c03d763473bf7020", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "841cad651f70f558e6680c784bcd5c99ee66229c23214e21c03d763473bf7020", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "841cad651f70f558e6680c784bcd5c99ee66229c23214e21c03d763473bf7020", kill_on_drop: false }`
[INFO] [stdout] 841cad651f70f558e6680c784bcd5c99ee66229c23214e21c03d763473bf7020
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 74f3857ccb9c124e4788fb7c83c1565932ffa04dedc130848ea3aaa8f2b98e75
[INFO] running `Command { std: "docker" "start" "-a" "74f3857ccb9c124e4788fb7c83c1565932ffa04dedc130848ea3aaa8f2b98e75", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking rayon-core v1.9.1
[INFO] [stderr]     Checking weezl v0.1.5
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]     Checking rayon v1.5.1
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]     Checking generic-array v0.14.4
[INFO] [stderr]    Compiling rustc_version v0.3.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking gif v0.11.2
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]    Compiling blake3 v0.3.8
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking arrayref v0.3.6
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]    Compiling anyhow v1.0.43
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking multicache v0.6.1
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking serde_yaml v0.8.17
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking tiff v0.6.1
[INFO] [stderr]    Compiling enumn v0.1.3
[INFO] [stderr]    Compiling structopt-derive v0.4.15
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]    Compiling rawloader v0.37.0
[INFO] [stderr]    Compiling rawloader v0.36.3
[INFO] [stderr]     Checking structopt v0.3.22
[INFO] [stderr]     Checking imagepipe v0.4.0
[INFO] [stderr]     Checking entiffen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 37.81s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rawloader v0.36.3, rawloader v0.37.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "74f3857ccb9c124e4788fb7c83c1565932ffa04dedc130848ea3aaa8f2b98e75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74f3857ccb9c124e4788fb7c83c1565932ffa04dedc130848ea3aaa8f2b98e75", kill_on_drop: false }`
[INFO] [stdout] 74f3857ccb9c124e4788fb7c83c1565932ffa04dedc130848ea3aaa8f2b98e75
[INFO] checking johnbotris/entiffen against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnbotris%2Fentiffen" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/johnbotris/entiffen 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 git repo https://github.com/johnbotris/entiffen
[INFO] finished tweaking git repo https://github.com/johnbotris/entiffen
[INFO] tweaked toml for git repo https://github.com/johnbotris/entiffen written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/johnbotris/entiffen 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]      Locking 1 package
[INFO] [stderr]       Adding entiffen v0.1.0 (/workspace/builds/worker-4-tc2/source)
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 44e7b38f66b87f2f6b25e82e8c8dd91b4e47f8eb6339105e26e68a96a7830952
[INFO] running `Command { std: "docker" "start" "-a" "44e7b38f66b87f2f6b25e82e8c8dd91b4e47f8eb6339105e26e68a96a7830952", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "44e7b38f66b87f2f6b25e82e8c8dd91b4e47f8eb6339105e26e68a96a7830952", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44e7b38f66b87f2f6b25e82e8c8dd91b4e47f8eb6339105e26e68a96a7830952", kill_on_drop: false }`
[INFO] [stdout] 44e7b38f66b87f2f6b25e82e8c8dd91b4e47f8eb6339105e26e68a96a7830952
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 62d9d9c6a271021ca1cd1619ee7d9efb15b4487fc1824b8d1ad8cd28f72ecff4
[INFO] running `Command { std: "docker" "start" "-a" "62d9d9c6a271021ca1cd1619ee7d9efb15b4487fc1824b8d1ad8cd28f72ecff4", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]     Checking crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]     Checking rayon-core v1.9.1
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]     Checking weezl v0.1.5
[INFO] [stderr]     Checking generic-array v0.14.4
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]     Checking rayon v1.5.1
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]    Compiling rustc_version v0.3.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking gif v0.11.2
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling blake3 v0.3.8
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]    Compiling anyhow v1.0.43
[INFO] [stderr]     Checking arrayref v0.3.6
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking multicache v0.6.1
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking serde_yaml v0.8.17
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking tiff v0.6.1
[INFO] [stderr]    Compiling enumn v0.1.3
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]    Compiling structopt-derive v0.4.15
[INFO] [stderr]    Compiling rawloader v0.37.0
[INFO] [stderr]    Compiling rawloader v0.36.3
[INFO] [stderr]     Checking structopt v0.3.22
[INFO] [stderr]     Checking imagepipe v0.4.0
[INFO] [stderr]     Checking entiffen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 34.16s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rawloader v0.36.3, rawloader v0.37.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "62d9d9c6a271021ca1cd1619ee7d9efb15b4487fc1824b8d1ad8cd28f72ecff4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62d9d9c6a271021ca1cd1619ee7d9efb15b4487fc1824b8d1ad8cd28f72ecff4", kill_on_drop: false }`
[INFO] [stdout] 62d9d9c6a271021ca1cd1619ee7d9efb15b4487fc1824b8d1ad8cd28f72ecff4