[INFO] cloning repository https://github.com/yishn/Kalk
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yishn/Kalk" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyishn%2FKalk", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyishn%2FKalk'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8c45819137eb1d319001a019cde9e967d957cd94
[INFO] checking yishn/Kalk against try#07fecb9cf34c4979a772ba38c99d6d9144768413 for pr-87710
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyishn%2FKalk" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yishn/Kalk on toolchain 07fecb9cf34c4979a772ba38c99d6d9144768413
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yishn/Kalk
[INFO] finished tweaking git repo https://github.com/yishn/Kalk
[INFO] tweaked toml for git repo https://github.com/yishn/Kalk written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/yishn/Kalk already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3559ea16bb45042df1206eae13d8725b1de704bcff05bb43810165c36a7f0cf9
[INFO] running `Command { std: "docker" "start" "-a" "3559ea16bb45042df1206eae13d8725b1de704bcff05bb43810165c36a7f0cf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3559ea16bb45042df1206eae13d8725b1de704bcff05bb43810165c36a7f0cf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3559ea16bb45042df1206eae13d8725b1de704bcff05bb43810165c36a7f0cf9", kill_on_drop: false }`
[INFO] [stdout] 3559ea16bb45042df1206eae13d8725b1de704bcff05bb43810165c36a7f0cf9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5980a7c7e85c54a1805bc4abd059f957ec1d93aef4620c4872fefd320e6e2368
[INFO] running `Command { std: "docker" "start" "-a" "5980a7c7e85c54a1805bc4abd059f957ec1d93aef4620c4872fefd320e6e2368", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling pest v1.0.6
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling pest_derive v1.0.7
[INFO] [stderr]     Checking kalk v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/types.rs:178:21
[INFO] [stdout]     |
[INFO] [stdout] 178 |     fn index(&self, usize) -> Option<Value>;
[INFO] [stdout]     |                     ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/types.rs:182:24
[INFO] [stdout]     |
[INFO] [stdout] 182 |     fn contains(&self, &Value) -> bool;
[INFO] [stdout]     |                        ^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Value`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/types.rs:178:21
[INFO] [stdout]     |
[INFO] [stdout] 178 |     fn index(&self, usize) -> Option<Value>;
[INFO] [stdout]     |                     ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]    --> src/types.rs:182:24
[INFO] [stdout]     |
[INFO] [stdout] 182 |     fn contains(&self, &Value) -> bool;
[INFO] [stdout]     |                        ^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Value`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_finite`
[INFO] [stdout]    --> src/types.rs:208:8
[INFO] [stdout]     |
[INFO] [stdout] 208 |     fn new_finite(start: f64, step: f64, stop: f64) -> ArithmeticProgression {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_infinite`
[INFO] [stdout]    --> src/types.rs:212:8
[INFO] [stdout]     |
[INFO] [stdout] 212 |     fn new_infinite(start: f64, step: f64) -> ArithmeticProgression {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_finite`
[INFO] [stdout]    --> src/types.rs:208:8
[INFO] [stdout]     |
[INFO] [stdout] 208 |     fn new_finite(start: f64, step: f64, stop: f64) -> ArithmeticProgression {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_infinite`
[INFO] [stdout]    --> src/types.rs:212:8
[INFO] [stdout]     |
[INFO] [stdout] 212 |     fn new_infinite(start: f64, step: f64) -> ArithmeticProgression {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.60s
[INFO] running `Command { std: "docker" "inspect" "5980a7c7e85c54a1805bc4abd059f957ec1d93aef4620c4872fefd320e6e2368", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5980a7c7e85c54a1805bc4abd059f957ec1d93aef4620c4872fefd320e6e2368", kill_on_drop: false }`
[INFO] [stdout] 5980a7c7e85c54a1805bc4abd059f957ec1d93aef4620c4872fefd320e6e2368