[INFO] cloning repository https://github.com/thejohncrafter/Verifier
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/thejohncrafter/Verifier" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthejohncrafter%2FVerifier", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthejohncrafter%2FVerifier'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bfb6d77dec965c06f633e9a62be21dce8b6416ce
[INFO] checking thejohncrafter/Verifier against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthejohncrafter%2FVerifier" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/thejohncrafter/Verifier 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/thejohncrafter/Verifier
[INFO] finished tweaking git repo https://github.com/thejohncrafter/Verifier
[INFO] tweaked toml for git repo https://github.com/thejohncrafter/Verifier written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/thejohncrafter/Verifier 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded chashmap v2.2.2
[INFO] [stderr]   Downloaded notify v5.0.0-pre.1
[INFO] [stderr]   Downloaded smallvec v0.6.11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e0fe2b27c598eafaf8f799df1699588a69bec4415eac44c09f50120fa4deeb81
[INFO] running `Command { std: "docker" "start" "-a" "e0fe2b27c598eafaf8f799df1699588a69bec4415eac44c09f50120fa4deeb81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e0fe2b27c598eafaf8f799df1699588a69bec4415eac44c09f50120fa4deeb81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0fe2b27c598eafaf8f799df1699588a69bec4415eac44c09f50120fa4deeb81", kill_on_drop: false }`
[INFO] [stdout] e0fe2b27c598eafaf8f799df1699588a69bec4415eac44c09f50120fa4deeb81
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 2900f815c671ebcf9a0e7de42094fd6bb413830efdc44f547f3e0a7cdea51b6d
[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" "2900f815c671ebcf9a0e7de42094fd6bb413830efdc44f547f3e0a7cdea51b6d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.53
[INFO] [stderr]    Compiling syn v1.0.7
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling bumpalo v2.6.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]     Checking smallvec v0.6.11
[INFO] [stderr]    Compiling wasm-bindgen v0.2.53
[INFO] [stderr]     Checking same-file v1.0.5
[INFO] [stderr]     Checking lazycell v1.2.1
[INFO] [stderr]     Checking anymap v0.12.1
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]     Checking walkdir v2.2.9
[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking filetime v0.2.7
[INFO] [stderr]     Checking inotify v0.7.0
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]     Checking parking_lot v0.4.8
[INFO] [stderr]     Checking chashmap v2.2.2
[INFO] [stderr]     Checking notify v5.0.0-pre.1
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.53
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.53
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.53
[INFO] [stderr]     Checking tipe v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `is_empty`
[INFO] [stdout]    --> src/core/base_types.rs:161:12
[INFO] [stdout]     |
[INFO] [stdout] 161 |     pub fn is_empty(&self) -> bool {
[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: `iter`
[INFO] [stdout]    --> src/core/base_types.rs:168:12
[INFO] [stdout]     |
[INFO] [stdout] 168 |     pub fn iter<'a>(self: Rc<Self>) -> StackIterator {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/core/base_types.rs:194:8
[INFO] [stdout]     |
[INFO] [stdout] 194 |     fn new(stack: Rc<HypStack>) -> StackIterator {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_sequent`
[INFO] [stdout]  --> src/core/printing.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn print_sequent(out: &mut dyn Write, seq: &Sequent) -> Result {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `then_func`
[INFO] [stdout]    --> src/runner/stack_helper.rs:604:12
[INFO] [stdout]     |
[INFO] [stdout] 604 |     pub fn then_func(&mut self, ccl: &Sequent) -> SequentResult {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `so_forall_func`
[INFO] [stdout]    --> src/runner/stack_helper.rs:632:12
[INFO] [stdout]     |
[INFO] [stdout] 632 |     pub fn so_forall_func(&mut self, varname: &str, ccl: &Sequent) -> SequentResult {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_empty`
[INFO] [stdout]    --> src/core/base_types.rs:161:12
[INFO] [stdout]     |
[INFO] [stdout] 161 |     pub fn is_empty(&self) -> bool {
[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: `iter`
[INFO] [stdout]    --> src/core/base_types.rs:168:12
[INFO] [stdout]     |
[INFO] [stdout] 168 |     pub fn iter<'a>(self: Rc<Self>) -> StackIterator {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/core/base_types.rs:194:8
[INFO] [stdout]     |
[INFO] [stdout] 194 |     fn new(stack: Rc<HypStack>) -> StackIterator {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_sequent`
[INFO] [stdout]  --> src/core/printing.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn print_sequent(out: &mut dyn Write, seq: &Sequent) -> Result {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `then_func`
[INFO] [stdout]    --> src/runner/stack_helper.rs:604:12
[INFO] [stdout]     |
[INFO] [stdout] 604 |     pub fn then_func(&mut self, ccl: &Sequent) -> SequentResult {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `so_forall_func`
[INFO] [stdout]    --> src/runner/stack_helper.rs:632:12
[INFO] [stdout]     |
[INFO] [stdout] 632 |     pub fn so_forall_func(&mut self, varname: &str, ccl: &Sequent) -> SequentResult {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 41.06s
[INFO] running `Command { std: "docker" "inspect" "2900f815c671ebcf9a0e7de42094fd6bb413830efdc44f547f3e0a7cdea51b6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2900f815c671ebcf9a0e7de42094fd6bb413830efdc44f547f3e0a7cdea51b6d", kill_on_drop: false }`
[INFO] [stdout] 2900f815c671ebcf9a0e7de42094fd6bb413830efdc44f547f3e0a7cdea51b6d