[INFO] cloning repository https://github.com/Dacit/sequent_prover
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Dacit/sequent_prover" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDacit%2Fsequent_prover", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDacit%2Fsequent_prover'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1425db8fd1cc9ca24b0dbbdfb6e32609c6a96226
[INFO] checking Dacit/sequent_prover against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDacit%2Fsequent_prover" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Dacit/sequent_prover on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Dacit/sequent_prover
[INFO] finished tweaking git repo https://github.com/Dacit/sequent_prover
[INFO] tweaked toml for git repo https://github.com/Dacit/sequent_prover written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/Dacit/sequent_prover already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 17392f75033f152c47b8a27b7ab4085c89cc83fe5d22a9b781d475cbf77a7970
[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" "17392f75033f152c47b8a27b7ab4085c89cc83fe5d22a9b781d475cbf77a7970", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "17392f75033f152c47b8a27b7ab4085c89cc83fe5d22a9b781d475cbf77a7970", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17392f75033f152c47b8a27b7ab4085c89cc83fe5d22a9b781d475cbf77a7970", kill_on_drop: false }`
[INFO] [stdout] 17392f75033f152c47b8a27b7ab4085c89cc83fe5d22a9b781d475cbf77a7970
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 40e29712ea4384928f33e1dd230d2bcea5fe2ae1b3a0ac50fccbbcecdbd87724
[INFO] running `Command { std: "docker" "start" "-a" "40e29712ea4384928f33e1dd230d2bcea5fe2ae1b3a0ac50fccbbcecdbd87724", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.40
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]     Checking itertools v0.7.8
[INFO] [stderr]     Checking terminal_size v0.1.7
[INFO] [stderr]     Checking sequent_prover v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:84:41
[INFO] [stdout]    |
[INFO] [stdout] 84 | fn split_expr(x: &str, pos: usize, op: &Fn(Box<Formula>, Box<Formula>) -> Formula) -> Formula {
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Box<Formula>, Box<Formula>) -> Formula`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:84:41
[INFO] [stdout]    |
[INFO] [stdout] 84 | fn split_expr(x: &str, pos: usize, op: &Fn(Box<Formula>, Box<Formula>) -> Formula) -> Formula {
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Box<Formula>, Box<Formula>) -> Formula`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.61s
[INFO] running `Command { std: "docker" "inspect" "40e29712ea4384928f33e1dd230d2bcea5fe2ae1b3a0ac50fccbbcecdbd87724", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40e29712ea4384928f33e1dd230d2bcea5fe2ae1b3a0ac50fccbbcecdbd87724", kill_on_drop: false }`
[INFO] [stdout] 40e29712ea4384928f33e1dd230d2bcea5fe2ae1b3a0ac50fccbbcecdbd87724