[INFO] fetching crate rustup_prompt_helper 1.1.0... [INFO] checking rustup_prompt_helper-1.1.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] extracting crate rustup_prompt_helper 1.1.0 into /workspace/builds/worker-0-tc1/source [INFO] validating manifest of crates.io crate rustup_prompt_helper 1.1.0 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 rustup_prompt_helper 1.1.0 [INFO] finished tweaking crates.io crate rustup_prompt_helper 1.1.0 [INFO] tweaked toml for crates.io crate rustup_prompt_helper 1.1.0 written to /workspace/builds/worker-0-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 3 packages [INFO] [stderr] Adding toml v0.2.1 (latest: v0.8.12) [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 toml v0.2.1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 455841dcf7fc6dde2920944e6a1dbf6cf0698a841585fef09166b115016b8bab [INFO] running `Command { std: "docker" "start" "-a" "455841dcf7fc6dde2920944e6a1dbf6cf0698a841585fef09166b115016b8bab", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "455841dcf7fc6dde2920944e6a1dbf6cf0698a841585fef09166b115016b8bab", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "455841dcf7fc6dde2920944e6a1dbf6cf0698a841585fef09166b115016b8bab", kill_on_drop: false }` [INFO] [stdout] 455841dcf7fc6dde2920944e6a1dbf6cf0698a841585fef09166b115016b8bab [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] bc219ea624ee139937806496647aa345f9da02a4cf7dcf0dfe9393ed03b3d17c [INFO] running `Command { std: "docker" "start" "-a" "bc219ea624ee139937806496647aa345f9da02a4cf7dcf0dfe9393ed03b3d17c", kill_on_drop: false }` [INFO] [stderr] Checking rustc-serialize v0.3.25 [INFO] [stderr] Checking toml v0.2.1 [INFO] [stderr] Checking rustup_prompt_helper v1.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/main.rs:19:5 [INFO] [stdout] | [INFO] [stdout] 19 | try!(file.read_to_string(&mut buffer).map_err(|_| "cannot read settings.toml")); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/main.rs:13:29 [INFO] [stdout] | [INFO] [stdout] 13 | let mut settings_path = try!(env::home_dir().ok_or("cannot get home directory")); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/main.rs:16:20 [INFO] [stdout] | [INFO] [stdout] 16 | let mut file = try!(File::open(&settings_path).map_err(|_| "cannot open settings.toml file")); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/main.rs:22:9 [INFO] [stdout] | [INFO] [stdout] 22 | try!(toml::Parser::new(&buffer).parse().ok_or("cannot parse settings.toml as toml")); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/main.rs:23:19 [INFO] [stdout] | [INFO] [stdout] 23 | let default = try!(value.get("default_toolchain") [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/main.rs:26:21 [INFO] [stdout] | [INFO] [stdout] 26 | let overrides = try!(value.get("overrides") [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/main.rs:34:15 [INFO] [stdout] | [INFO] [stdout] 34 | let cwd = try!(env::current_dir().map_err(|_| "cannot get working directory")); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/main.rs:35:15 [INFO] [stdout] | [INFO] [stdout] 35 | let cwd = try!(cwd.to_str().ok_or("cannot convert working directory to string")); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/main.rs:19:5 [INFO] [stdout] | [INFO] [stdout] 19 | try!(file.read_to_string(&mut buffer).map_err(|_| "cannot read settings.toml")); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/main.rs:36:32 [INFO] [stdout] | [INFO] [stdout] 36 | let (default, overrides) = try!(read_settings()); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/main.rs:40:29 [INFO] [stdout] | [INFO] [stdout] 40 | let toolchain = try!(strip_toolchain(toolchain).ok_or("Can not parse settings.toml")); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/main.rs:13:29 [INFO] [stdout] | [INFO] [stdout] 13 | let mut settings_path = try!(env::home_dir().ok_or("cannot get home directory")); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/main.rs:16:20 [INFO] [stdout] | [INFO] [stdout] 16 | let mut file = try!(File::open(&settings_path).map_err(|_| "cannot open settings.toml file")); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/main.rs:22:9 [INFO] [stdout] | [INFO] [stdout] 22 | try!(toml::Parser::new(&buffer).parse().ok_or("cannot parse settings.toml as toml")); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/main.rs:23:19 [INFO] [stdout] | [INFO] [stdout] 23 | let default = try!(value.get("default_toolchain") [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/main.rs:26:21 [INFO] [stdout] | [INFO] [stdout] 26 | let overrides = try!(value.get("overrides") [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/main.rs:34:15 [INFO] [stdout] | [INFO] [stdout] 34 | let cwd = try!(env::current_dir().map_err(|_| "cannot get working directory")); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/main.rs:35:15 [INFO] [stdout] | [INFO] [stdout] 35 | let cwd = try!(cwd.to_str().ok_or("cannot convert working directory to string")); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/main.rs:36:32 [INFO] [stdout] | [INFO] [stdout] 36 | let (default, overrides) = try!(read_settings()); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/main.rs:40:29 [INFO] [stdout] | [INFO] [stdout] 40 | let toolchain = try!(strip_toolchain(toolchain).ok_or("Can not parse settings.toml")); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated function `std::env::home_dir`: This function's behavior may be unexpected on Windows. Consider using a crate from crates.io instead. [INFO] [stdout] --> src/main.rs:13:39 [INFO] [stdout] | [INFO] [stdout] 13 | let mut settings_path = try!(env::home_dir().ok_or("cannot get home directory")); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated function `std::env::home_dir`: This function's behavior may be unexpected on Windows. Consider using a crate from crates.io instead. [INFO] [stdout] --> src/main.rs:13:39 [INFO] [stdout] | [INFO] [stdout] 13 | let mut settings_path = try!(env::home_dir().ok_or("cannot get home directory")); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 11 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 11 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.30s [INFO] running `Command { std: "docker" "inspect" "bc219ea624ee139937806496647aa345f9da02a4cf7dcf0dfe9393ed03b3d17c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bc219ea624ee139937806496647aa345f9da02a4cf7dcf0dfe9393ed03b3d17c", kill_on_drop: false }` [INFO] [stdout] bc219ea624ee139937806496647aa345f9da02a4cf7dcf0dfe9393ed03b3d17c [INFO] checking rustup_prompt_helper-1.1.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback [INFO] extracting crate rustup_prompt_helper 1.1.0 into /workspace/builds/worker-0-tc2/source [INFO] validating manifest of crates.io crate rustup_prompt_helper 1.1.0 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 rustup_prompt_helper 1.1.0 [INFO] finished tweaking crates.io crate rustup_prompt_helper 1.1.0 [INFO] tweaked toml for crates.io crate rustup_prompt_helper 1.1.0 written to /workspace/builds/worker-0-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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] fb895684bd828b18ea9518fc953c4fab5178a74a2d663cf2903580e3cb53eeff [INFO] running `Command { std: "docker" "start" "-a" "fb895684bd828b18ea9518fc953c4fab5178a74a2d663cf2903580e3cb53eeff", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "fb895684bd828b18ea9518fc953c4fab5178a74a2d663cf2903580e3cb53eeff", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fb895684bd828b18ea9518fc953c4fab5178a74a2d663cf2903580e3cb53eeff", kill_on_drop: false }` [INFO] [stdout] fb895684bd828b18ea9518fc953c4fab5178a74a2d663cf2903580e3cb53eeff [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] a70073f0c1467c207ea4aa999093f6499524a8ccfcc4e16fbbd2b45d5970f12a [INFO] running `Command { std: "docker" "start" "-a" "a70073f0c1467c207ea4aa999093f6499524a8ccfcc4e16fbbd2b45d5970f12a", kill_on_drop: false }` [INFO] [stderr] Checking rustc-serialize v0.3.25 [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" "a70073f0c1467c207ea4aa999093f6499524a8ccfcc4e16fbbd2b45d5970f12a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a70073f0c1467c207ea4aa999093f6499524a8ccfcc4e16fbbd2b45d5970f12a", kill_on_drop: false }` [INFO] [stdout] a70073f0c1467c207ea4aa999093f6499524a8ccfcc4e16fbbd2b45d5970f12a