[INFO] cloning repository https://github.com/birkenfeld/kenken-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/birkenfeld/kenken-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbirkenfeld%2Fkenken-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbirkenfeld%2Fkenken-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3c8dc0d83bfba928d088170c452a8483fa8b8295
[INFO] checking birkenfeld/kenken-rs against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbirkenfeld%2Fkenken-rs" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/birkenfeld/kenken-rs on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/birkenfeld/kenken-rs
[INFO] finished tweaking git repo https://github.com/birkenfeld/kenken-rs
[INFO] tweaked toml for git repo https://github.com/birkenfeld/kenken-rs written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/birkenfeld/kenken-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 29cafaf931a160bf3cc9d9b903bc1a798ccd78c68d5906bbb439ed6d41807ab9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "29cafaf931a160bf3cc9d9b903bc1a798ccd78c68d5906bbb439ed6d41807ab9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "29cafaf931a160bf3cc9d9b903bc1a798ccd78c68d5906bbb439ed6d41807ab9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29cafaf931a160bf3cc9d9b903bc1a798ccd78c68d5906bbb439ed6d41807ab9", kill_on_drop: false }`
[INFO] [stdout] 29cafaf931a160bf3cc9d9b903bc1a798ccd78c68d5906bbb439ed6d41807ab9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f5350eeda11bad5d23a783dd4a1c6c8b833cc4808b97bd533a357b2bf2862a11
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f5350eeda11bad5d23a783dd4a1c6c8b833cc4808b97bd533a357b2bf2862a11", kill_on_drop: false }`
[INFO] [stderr]     Checking kenken v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/helpers.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |             try!(f.write_str(&sep));
[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/helpers.rs:41:17
[INFO] [stdout]    |
[INFO] [stdout] 41 |                 try!(write!(f, "| {} ", cell));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/helpers.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |             try!(f.write_str("|\n"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/constraints.rs:230:13
[INFO] [stdout]     |
[INFO] [stdout] 230 |             try!(f.write_str(&sep));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/constraints.rs:232:17
[INFO] [stdout]     |
[INFO] [stdout] 232 |                 try!(write!(f, "| {0:1$} ", cell, size));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/constraints.rs:234:13
[INFO] [stdout]     |
[INFO] [stdout] 234 |             try!(f.write_str("|\n"));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:54:20
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let file = try!(File::open(filename));
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:65:24
[INFO] [stdout]    |
[INFO] [stdout] 65 |             let line = try!(line);
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:87:24
[INFO] [stdout]    |
[INFO] [stdout] 87 |             let line = try!(line);
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:95:23
[INFO] [stdout]    |
[INFO] [stdout] 95 |             let key = try!(parts[0].chars().nth(0).ok_or("missing char before :"));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:99:24
[INFO] [stdout]    |
[INFO] [stdout] 99 |             let cage = try!(cells.get_mut(&key).ok_or(format!("reference to undefined cell {}", key)));
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:101:24
[INFO] [stdout]     |
[INFO] [stdout] 101 |             let goal = try!(parts[1][..i-1].parse()
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:53:51
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn load(filename: &str) -> Result<KenKen, Box<Error>> {
[INFO] [stdout]    |                                                   ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/helpers.rs:39:13
[INFO] [stdout]    |
[INFO] [stdout] 39 |             try!(f.write_str(&sep));
[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/helpers.rs:41:17
[INFO] [stdout]    |
[INFO] [stdout] 41 |                 try!(write!(f, "| {} ", cell));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/helpers.rs:43:13
[INFO] [stdout]    |
[INFO] [stdout] 43 |             try!(f.write_str("|\n"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/constraints.rs:230:13
[INFO] [stdout]     |
[INFO] [stdout] 230 |             try!(f.write_str(&sep));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/constraints.rs:232:17
[INFO] [stdout]     |
[INFO] [stdout] 232 |                 try!(write!(f, "| {0:1$} ", cell, size));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/constraints.rs:234:13
[INFO] [stdout]     |
[INFO] [stdout] 234 |             try!(f.write_str("|\n"));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:54:20
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let file = try!(File::open(filename));
[INFO] [stdout]    |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:65:24
[INFO] [stdout]    |
[INFO] [stdout] 65 |             let line = try!(line);
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:87:24
[INFO] [stdout]    |
[INFO] [stdout] 87 |             let line = try!(line);
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:95:23
[INFO] [stdout]    |
[INFO] [stdout] 95 |             let key = try!(parts[0].chars().nth(0).ok_or("missing char before :"));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:99:24
[INFO] [stdout]    |
[INFO] [stdout] 99 |             let cage = try!(cells.get_mut(&key).ok_or(format!("reference to undefined cell {}", key)));
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:101:24
[INFO] [stdout]     |
[INFO] [stdout] 101 |             let goal = try!(parts[1][..i-1].parse()
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:53:51
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn load(filename: &str) -> Result<KenKen, Box<Error>> {
[INFO] [stdout]    |                                                   ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.41s
[INFO] running `Command { std: "docker" "inspect" "f5350eeda11bad5d23a783dd4a1c6c8b833cc4808b97bd533a357b2bf2862a11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5350eeda11bad5d23a783dd4a1c6c8b833cc4808b97bd533a357b2bf2862a11", kill_on_drop: false }`
[INFO] [stdout] f5350eeda11bad5d23a783dd4a1c6c8b833cc4808b97bd533a357b2bf2862a11