[INFO] cloning repository https://github.com/spica314/ninja-solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/spica314/ninja-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspica314%2Fninja-solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspica314%2Fninja-solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3b2701573eb0b112c1c9fe367a11009486e92d5c
[INFO] checking spica314/ninja-solver against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspica314%2Fninja-solver" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/spica314/ninja-solver 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/spica314/ninja-solver
[INFO] finished tweaking git repo https://github.com/spica314/ninja-solver
[INFO] tweaked toml for git repo https://github.com/spica314/ninja-solver written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/spica314/ninja-solver 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] 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] 2c2f0d59e7f98155ba124143398148e50d87887d0ccf930ec455bb34ea7b5fe3
[INFO] running `Command { std: "docker" "start" "-a" "2c2f0d59e7f98155ba124143398148e50d87887d0ccf930ec455bb34ea7b5fe3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c2f0d59e7f98155ba124143398148e50d87887d0ccf930ec455bb34ea7b5fe3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c2f0d59e7f98155ba124143398148e50d87887d0ccf930ec455bb34ea7b5fe3", kill_on_drop: false }`
[INFO] [stdout] 2c2f0d59e7f98155ba124143398148e50d87887d0ccf930ec455bb34ea7b5fe3
[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] e9286dfc86e3db9f3a5bb9291f6227c39ba78dd19a0db643137237df9b6c967a
[INFO] running `Command { std: "docker" "start" "-a" "e9286dfc86e3db9f3a5bb9291f6227c39ba78dd19a0db643137237df9b6c967a", kill_on_drop: false }`
[INFO] [stderr]     Checking ninja-solver v0.1.0 (/opt/rustwide/workdir/ninja-solver)
[INFO] [stdout] warning: unused import: `BTreeSet`
[INFO] [stdout]  --> ninja-solver/src/sat.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::{BTreeSet, HashMap}, fmt::{self, Debug}};
[INFO] [stdout]   |                         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BTreeSet`
[INFO] [stdout]  --> ninja-solver/src/sat.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::{BTreeSet, HashMap}, fmt::{self, Debug}};
[INFO] [stdout]   |                         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `n_var` is never read
[INFO] [stdout]    --> ninja-solver/src/sat.rs:245:5
[INFO] [stdout]     |
[INFO] [stdout] 244 | struct SatSolver {
[INFO] [stdout]     |        --------- field in this struct
[INFO] [stdout] 245 |     n_var: usize,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `SatSolver` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `n_var` is never read
[INFO] [stdout]    --> ninja-solver/src/sat.rs:245:5
[INFO] [stdout]     |
[INFO] [stdout] 244 | struct SatSolver {
[INFO] [stdout]     |        --------- field in this struct
[INFO] [stdout] 245 |     n_var: usize,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `SatSolver` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "e9286dfc86e3db9f3a5bb9291f6227c39ba78dd19a0db643137237df9b6c967a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9286dfc86e3db9f3a5bb9291f6227c39ba78dd19a0db643137237df9b6c967a", kill_on_drop: false }`
[INFO] [stdout] e9286dfc86e3db9f3a5bb9291f6227c39ba78dd19a0db643137237df9b6c967a
[INFO] checking spica314/ninja-solver against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspica314%2Fninja-solver" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/spica314/ninja-solver 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/spica314/ninja-solver
[INFO] finished tweaking git repo https://github.com/spica314/ninja-solver
[INFO] tweaked toml for git repo https://github.com/spica314/ninja-solver written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/spica314/ninja-solver 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] c0c0315a150c1d24b7ee6b96003b9cc1508c62c6125ecb9bc88b0a588b624d18
[INFO] running `Command { std: "docker" "start" "-a" "c0c0315a150c1d24b7ee6b96003b9cc1508c62c6125ecb9bc88b0a588b624d18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c0c0315a150c1d24b7ee6b96003b9cc1508c62c6125ecb9bc88b0a588b624d18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0c0315a150c1d24b7ee6b96003b9cc1508c62c6125ecb9bc88b0a588b624d18", kill_on_drop: false }`
[INFO] [stdout] c0c0315a150c1d24b7ee6b96003b9cc1508c62c6125ecb9bc88b0a588b624d18
[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] da48a83b977b54c501bb5aebe49b428515bad74b5875d6e6e0fdcd18c8d8dc15
[INFO] running `Command { std: "docker" "start" "-a" "da48a83b977b54c501bb5aebe49b428515bad74b5875d6e6e0fdcd18c8d8dc15", kill_on_drop: false }`
[INFO] [stderr]     Checking ninja-solver v0.1.0 (/opt/rustwide/workdir/ninja-solver)
[INFO] [stdout] warning: unused import: `BTreeSet`
[INFO] [stdout]  --> ninja-solver/src/sat.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::{BTreeSet, HashMap}, fmt::{self, Debug}};
[INFO] [stdout]   |                         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BTreeSet`
[INFO] [stdout]  --> ninja-solver/src/sat.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{collections::{BTreeSet, HashMap}, fmt::{self, Debug}};
[INFO] [stdout]   |                         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> ninja-solver/src/sat.rs:355:29
[INFO] [stdout]     |
[INFO] [stdout] 355 | ...                   panic!();
[INFO] [stdout]     |                       ^^^^^^^^ cannot infer type
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> ninja-solver/src/sat.rs:355:29
[INFO] [stdout]     |
[INFO] [stdout] 355 | ...                   panic!();
[INFO] [stdout]     |                       ^^^^^^^^ cannot infer type
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `$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; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ninja-solver` (lib) due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 1 previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ninja-solver` (lib test) due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "da48a83b977b54c501bb5aebe49b428515bad74b5875d6e6e0fdcd18c8d8dc15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da48a83b977b54c501bb5aebe49b428515bad74b5875d6e6e0fdcd18c8d8dc15", kill_on_drop: false }`
[INFO] [stdout] da48a83b977b54c501bb5aebe49b428515bad74b5875d6e6e0fdcd18c8d8dc15