[INFO] cloning repository https://github.com/vityafx/cargo-cook
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vityafx/cargo-cook" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvityafx%2Fcargo-cook", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvityafx%2Fcargo-cook'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ae938f649fe007e189eeeb4bc0a54026912ab495
[INFO] checking vityafx/cargo-cook against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvityafx%2Fcargo-cook" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vityafx/cargo-cook on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vityafx/cargo-cook
[INFO] finished tweaking git repo https://github.com/vityafx/cargo-cook
[INFO] tweaked toml for git repo https://github.com/vityafx/cargo-cook written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/vityafx/cargo-cook 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ssh2 v0.9.4
[INFO] [stderr]   Downloaded sysconf v0.3.4
[INFO] [stderr]   Downloaded bzip2 v0.4.4
[INFO] [stderr]   Downloaded rpassword v5.0.1
[INFO] [stderr]   Downloaded xattr v1.0.1
[INFO] [stderr]   Downloaded rustc-serialize v0.3.25
[INFO] [stderr]   Downloaded openssl-sys v0.9.97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f5d7f295b4eb933fe5c09d7e1f7a2cd676e2a52ea77c5b10143ade212ef22dc1
[INFO] running `Command { std: "docker" "start" "-a" "f5d7f295b4eb933fe5c09d7e1f7a2cd676e2a52ea77c5b10143ade212ef22dc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f5d7f295b4eb933fe5c09d7e1f7a2cd676e2a52ea77c5b10143ade212ef22dc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5d7f295b4eb933fe5c09d7e1f7a2cd676e2a52ea77c5b10143ade212ef22dc1", kill_on_drop: false }`
[INFO] [stdout] f5d7f295b4eb933fe5c09d7e1f7a2cd676e2a52ea77c5b10143ade212ef22dc1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a5db44b7f55da728715c79f4c730092eb9c6bb9ddeef58fd52a23a115e29e161
[INFO] running `Command { std: "docker" "start" "-a" "a5db44b7f55da728715c79f4c730092eb9c6bb9ddeef58fd52a23a115e29e161", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling proc-macro2 v1.0.70
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]     Checking smallvec v1.11.2
[INFO] [stderr]    Compiling serde v1.0.193
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking rustc-serialize v0.3.25
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]     Checking errno v0.2.8
[INFO] [stderr]     Checking filetime v0.2.23
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking xattr v1.0.1
[INFO] [stderr]     Checking rpassword v5.0.1
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking sysconf v0.3.4
[INFO] [stderr]     Checking tar v0.4.40
[INFO] [stderr]     Checking term v0.7.0
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]    Compiling libz-sys v1.1.12
[INFO] [stderr]    Compiling openssl-sys v0.9.97
[INFO] [stderr]    Compiling bzip2-sys v0.1.11+1.0.8
[INFO] [stderr]    Compiling libssh2-sys v0.3.0
[INFO] [stderr]     Checking bzip2 v0.4.4
[INFO] [stderr]    Compiling serde_derive v1.0.193
[INFO] [stderr]     Checking regex v1.10.2
[INFO] [stderr]     Checking ssh2 v0.9.4
[INFO] [stderr]     Checking toml v0.5.11
[INFO] [stderr]     Checking cargo-cook v1.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.42s
[INFO] running `Command { std: "docker" "inspect" "a5db44b7f55da728715c79f4c730092eb9c6bb9ddeef58fd52a23a115e29e161", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5db44b7f55da728715c79f4c730092eb9c6bb9ddeef58fd52a23a115e29e161", kill_on_drop: false }`
[INFO] [stdout] a5db44b7f55da728715c79f4c730092eb9c6bb9ddeef58fd52a23a115e29e161
[INFO] checking vityafx/cargo-cook against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvityafx%2Fcargo-cook" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vityafx/cargo-cook on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vityafx/cargo-cook
[INFO] finished tweaking git repo https://github.com/vityafx/cargo-cook
[INFO] tweaked toml for git repo https://github.com/vityafx/cargo-cook written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/vityafx/cargo-cook 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e255a031405643fff2fdd0ac9ebe23190ad68c5921403996c3b42fb4770d6597
[INFO] running `Command { std: "docker" "start" "-a" "e255a031405643fff2fdd0ac9ebe23190ad68c5921403996c3b42fb4770d6597", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e255a031405643fff2fdd0ac9ebe23190ad68c5921403996c3b42fb4770d6597", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e255a031405643fff2fdd0ac9ebe23190ad68c5921403996c3b42fb4770d6597", kill_on_drop: false }`
[INFO] [stdout] e255a031405643fff2fdd0ac9ebe23190ad68c5921403996c3b42fb4770d6597
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 47ff81d7ad8d49d1a04ed71099b0962d1003ddd9eee018343c021b0d5f870081
[INFO] running `Command { std: "docker" "start" "-a" "47ff81d7ad8d49d1a04ed71099b0962d1003ddd9eee018343c021b0d5f870081", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling vcpkg v0.2.15
[INFO] [stderr]    Compiling proc-macro2 v1.0.70
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]     Checking memchr v2.6.4
[INFO] [stderr]     Checking smallvec v1.11.2
[INFO] [stderr]    Compiling serde v1.0.193
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking unicode-width v0.1.11
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking rustc-serialize v0.3.25
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/rustc-serialize-0.3.25/src/json.rs:1387:20
[INFO] [stdout]      |
[INFO] [stdout] 1387 |             _ => { panic!(); }
[INFO] [stdout]      |                    ^^^^^^^^ cannot infer type
[INFO] [stdout]      |
[INFO] [stdout]      = note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking errno v0.2.8
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]     Checking xattr v1.0.1
[INFO] [stderr]     Checking filetime v0.2.23
[INFO] [stderr]     Checking rpassword v5.0.1
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking sysconf v0.3.4
[INFO] [stderr]     Checking tar v0.4.40
[INFO] [stderr]     Checking term v0.7.0
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc-serialize` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "47ff81d7ad8d49d1a04ed71099b0962d1003ddd9eee018343c021b0d5f870081", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47ff81d7ad8d49d1a04ed71099b0962d1003ddd9eee018343c021b0d5f870081", kill_on_drop: false }`
[INFO] [stdout] 47ff81d7ad8d49d1a04ed71099b0962d1003ddd9eee018343c021b0d5f870081