[INFO] fetching crate knrs 0.2.1... [INFO] checking knrs-0.2.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] extracting crate knrs 0.2.1 into /workspace/builds/worker-7-tc1/source [INFO] validating manifest of crates.io crate knrs 0.2.1 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 crates.io crate knrs 0.2.1 [INFO] finished tweaking crates.io crate knrs 0.2.1 [INFO] tweaked toml for crates.io crate knrs 0.2.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 11 packages [INFO] [stderr] Adding byteorder v0.5.3 (latest: v1.5.0) [INFO] [stderr] Adding csv v0.14.7 (latest: v1.3.0) [INFO] [stderr] Adding glob v0.2.11 (latest: v0.3.1) [INFO] [stderr] Adding libc v0.1.12 (latest: v0.2.153) [INFO] [stderr] Adding pretty-bytes v0.1.0 (latest: v0.2.2) [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] Downloading crates ... [INFO] [stderr] Downloaded quick-csv v0.1.6 [INFO] [stderr] Downloaded pretty-bytes v0.1.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] d1ab9cdc26c6c6d3041f29228da44387057ee91cd88ddcf72a1e2bfea1a014f5 [INFO] running `Command { std: "docker" "start" "-a" "d1ab9cdc26c6c6d3041f29228da44387057ee91cd88ddcf72a1e2bfea1a014f5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d1ab9cdc26c6c6d3041f29228da44387057ee91cd88ddcf72a1e2bfea1a014f5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d1ab9cdc26c6c6d3041f29228da44387057ee91cd88ddcf72a1e2bfea1a014f5", kill_on_drop: false }` [INFO] [stdout] d1ab9cdc26c6c6d3041f29228da44387057ee91cd88ddcf72a1e2bfea1a014f5 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 58e1b86237a7e09f3882c5f5b4344a8bebcff3cd0679be51e2c58918b89a6cb8 [INFO] running `Command { std: "docker" "start" "-a" "58e1b86237a7e09f3882c5f5b4344a8bebcff3cd0679be51e2c58918b89a6cb8", kill_on_drop: false }` [INFO] [stderr] Checking rustc-serialize v0.3.25 [INFO] [stderr] Checking unicode-width v0.1.11 [INFO] [stderr] Checking libc v0.1.12 [INFO] [stderr] Checking scoped_threadpool v0.1.9 [INFO] [stderr] Checking glob v0.2.11 [INFO] [stderr] Checking getopts v0.2.21 [INFO] [stderr] Checking pretty-bytes v0.1.0 [INFO] [stderr] Checking quick-csv v0.1.6 [INFO] [stderr] Checking csv v0.14.7 [INFO] [stderr] Checking knrs v0.2.1 (/opt/rustwide/workdir) [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.06s [INFO] running `Command { std: "docker" "inspect" "58e1b86237a7e09f3882c5f5b4344a8bebcff3cd0679be51e2c58918b89a6cb8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "58e1b86237a7e09f3882c5f5b4344a8bebcff3cd0679be51e2c58918b89a6cb8", kill_on_drop: false }` [INFO] [stdout] 58e1b86237a7e09f3882c5f5b4344a8bebcff3cd0679be51e2c58918b89a6cb8 [INFO] checking knrs-0.2.1 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback [INFO] extracting crate knrs 0.2.1 into /workspace/builds/worker-7-tc2/source [INFO] validating manifest of crates.io crate knrs 0.2.1 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 crates.io crate knrs 0.2.1 [INFO] finished tweaking crates.io crate knrs 0.2.1 [INFO] tweaked toml for crates.io crate knrs 0.2.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] e24bc4170a81e00b499e50871735773880cb22c5e0ba1e0492c559235991d07c [INFO] running `Command { std: "docker" "start" "-a" "e24bc4170a81e00b499e50871735773880cb22c5e0ba1e0492c559235991d07c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e24bc4170a81e00b499e50871735773880cb22c5e0ba1e0492c559235991d07c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e24bc4170a81e00b499e50871735773880cb22c5e0ba1e0492c559235991d07c", kill_on_drop: false }` [INFO] [stdout] e24bc4170a81e00b499e50871735773880cb22c5e0ba1e0492c559235991d07c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] c0561bb089c3f10be5c439037ff979666ba3b2bf9785979affac5a99fae0f319 [INFO] running `Command { std: "docker" "start" "-a" "c0561bb089c3f10be5c439037ff979666ba3b2bf9785979affac5a99fae0f319", kill_on_drop: false }` [INFO] [stderr] Checking unicode-width v0.1.11 [INFO] [stderr] Checking rustc-serialize v0.3.25 [INFO] [stderr] Checking libc v0.1.12 [INFO] [stderr] Checking scoped_threadpool v0.1.9 [INFO] [stderr] Checking glob v0.2.11 [INFO] [stderr] Checking getopts v0.2.21 [INFO] [stderr] Checking pretty-bytes v0.1.0 [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] [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] running `Command { std: "docker" "inspect" "c0561bb089c3f10be5c439037ff979666ba3b2bf9785979affac5a99fae0f319", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c0561bb089c3f10be5c439037ff979666ba3b2bf9785979affac5a99fae0f319", kill_on_drop: false }` [INFO] [stdout] c0561bb089c3f10be5c439037ff979666ba3b2bf9785979affac5a99fae0f319