[INFO] fetching crate guess-num 0.1.3...
[INFO] checking guess-num-0.1.3 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate guess-num 0.1.3 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate guess-num 0.1.3 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 guess-num 0.1.3
[INFO] finished tweaking crates.io crate guess-num 0.1.3
[INFO] tweaked toml for crates.io crate guess-num 0.1.3 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate guess-num 0.1.3 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 aoko v0.3.0-alpha.12
[INFO] [stderr]   Downloaded no-std-compat v0.4.1
[INFO] [stderr]   Downloaded minstant v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 0e15fc96fb2a254a54e5a1689268695addda7c0125e2f257cc9a6424d9d99165
[INFO] running `Command { std: "docker" "start" "-a" "0e15fc96fb2a254a54e5a1689268695addda7c0125e2f257cc9a6424d9d99165", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e15fc96fb2a254a54e5a1689268695addda7c0125e2f257cc9a6424d9d99165", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e15fc96fb2a254a54e5a1689268695addda7c0125e2f257cc9a6424d9d99165", kill_on_drop: false }`
[INFO] [stdout] 0e15fc96fb2a254a54e5a1689268695addda7c0125e2f257cc9a6424d9d99165
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 8d239dc4d58d7d7dab9fa35eae5231db7544711adcfa3e97b7ecdfc2a103168a
[INFO] running `Command { std: "docker" "start" "-a" "8d239dc4d58d7d7dab9fa35eae5231db7544711adcfa3e97b7ecdfc2a103168a", 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]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking either v1.7.0
[INFO] [stderr]     Checking no-std-compat v0.4.1
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling ctor v0.1.23
[INFO] [stderr]     Checking minstant v0.1.1
[INFO] [stderr]     Checking aoko v0.3.0-alpha.12
[INFO] [stderr]     Checking guess-num v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.50s
[INFO] running `Command { std: "docker" "inspect" "8d239dc4d58d7d7dab9fa35eae5231db7544711adcfa3e97b7ecdfc2a103168a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d239dc4d58d7d7dab9fa35eae5231db7544711adcfa3e97b7ecdfc2a103168a", kill_on_drop: false }`
[INFO] [stdout] 8d239dc4d58d7d7dab9fa35eae5231db7544711adcfa3e97b7ecdfc2a103168a
[INFO] checking guess-num-0.1.3 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate guess-num 0.1.3 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate guess-num 0.1.3 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 guess-num 0.1.3
[INFO] finished tweaking crates.io crate guess-num 0.1.3
[INFO] tweaked toml for crates.io crate guess-num 0.1.3 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate guess-num 0.1.3 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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 5fc8669b8a2b98b73d8fad31512866cf1c569d7604c5fe49cdd61fbdc9da9f56
[INFO] running `Command { std: "docker" "start" "-a" "5fc8669b8a2b98b73d8fad31512866cf1c569d7604c5fe49cdd61fbdc9da9f56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5fc8669b8a2b98b73d8fad31512866cf1c569d7604c5fe49cdd61fbdc9da9f56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fc8669b8a2b98b73d8fad31512866cf1c569d7604c5fe49cdd61fbdc9da9f56", kill_on_drop: false }`
[INFO] [stdout] 5fc8669b8a2b98b73d8fad31512866cf1c569d7604c5fe49cdd61fbdc9da9f56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] a9b17bfbff69c375d1fddb52ac3c5ccd8793f5d0fb3872d15baf1a2a3828d534
[INFO] running `Command { std: "docker" "start" "-a" "a9b17bfbff69c375d1fddb52ac3c5ccd8793f5d0fb3872d15baf1a2a3828d534", 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]     Checking either v1.7.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking no-std-compat v0.4.1
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling ctor v0.1.23
[INFO] [stderr]     Checking minstant v0.1.1
[INFO] [stderr]     Checking aoko v0.3.0-alpha.12
[INFO] [stderr]     Checking guess-num v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/main.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 | /         match read_line().trim_end() {
[INFO] [stdout] 32 | |             "n" => $new,
[INFO] [stdout] 33 | |             "q" => process::exit(0),
[INFO] [stdout] 34 | |             _ => panic!("Wrong input, game exit."),
[INFO] [stdout] 35 | |         }
[INFO] [stdout]    | |_________^ cannot infer type
[INFO] [stdout] ...
[INFO] [stdout] 69 |                   ['=', ..], 1, == { succ(); n!(continue 'start); };
[INFO] [stdout]    |                                              ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `n` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> src/main.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 | /         match read_line().trim_end() {
[INFO] [stdout] 32 | |             "n" => $new,
[INFO] [stdout] 33 | |             "q" => process::exit(0),
[INFO] [stdout] 34 | |             _ => panic!("Wrong input, game exit."),
[INFO] [stdout] 35 | |         }
[INFO] [stdout]    | |_________^ cannot infer type
[INFO] [stdout] ...
[INFO] [stdout] 69 |                   ['=', ..], 1, == { succ(); n!(continue 'start); };
[INFO] [stdout]    |                                              ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `n` (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] [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 `guess-num` (bin "guess-num") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `guess-num` (bin "guess-num" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "a9b17bfbff69c375d1fddb52ac3c5ccd8793f5d0fb3872d15baf1a2a3828d534", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9b17bfbff69c375d1fddb52ac3c5ccd8793f5d0fb3872d15baf1a2a3828d534", kill_on_drop: false }`
[INFO] [stdout] a9b17bfbff69c375d1fddb52ac3c5ccd8793f5d0fb3872d15baf1a2a3828d534