[INFO] fetching crate smt2 0.2.0...
[INFO] testing smt2-0.2.0 against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] extracting crate smt2 0.2.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate smt2 0.2.0 on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate smt2 0.2.0
[INFO] finished tweaking crates.io crate smt2 0.2.0
[INFO] tweaked toml for crates.io crate smt2 0.2.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded source-span v2.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ac90dc445fc9d1ca1ccfbe3df4446544dce2bce9d4a02989e765b87f3ef63c43
[INFO] running `Command { std: "docker" "start" "-a" "ac90dc445fc9d1ca1ccfbe3df4446544dce2bce9d4a02989e765b87f3ef63c43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ac90dc445fc9d1ca1ccfbe3df4446544dce2bce9d4a02989e765b87f3ef63c43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac90dc445fc9d1ca1ccfbe3df4446544dce2bce9d4a02989e765b87f3ef63c43", kill_on_drop: false }`
[INFO] [stdout] ac90dc445fc9d1ca1ccfbe3df4446544dce2bce9d4a02989e765b87f3ef63c43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 26eec218ac2ff3b2cac33200f55ee42b98fba7727b6c04e60dd450b61258f7f3
[INFO] running `Command { std: "docker" "start" "-a" "26eec218ac2ff3b2cac33200f55ee42b98fba7727b6c04e60dd450b61258f7f3", kill_on_drop: false }`
[INFO] [stderr]    Compiling numtoa v0.1.0
[INFO] [stderr]    Compiling utf8-decode v1.0.1
[INFO] [stderr]    Compiling termion v1.5.6
[INFO] [stderr]    Compiling source-span v2.6.0
[INFO] [stderr]    Compiling smt2 v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `downgrade_pattern`
[INFO] [stdout]   --> src/client/interface.rs:85:16
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub(crate) fn downgrade_pattern(&self, _pattern: &Typed<Pattern<Self>>) -> ExecResult<Typed<Pattern<Internal<L, C, F>>>, Error<L, C, ...
[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: `downgrade_sort_declaration`
[INFO] [stdout]    --> src/client/interface.rs:148:16
[INFO] [stdout]     |
[INFO] [stdout] 148 |     pub(crate) fn downgrade_sort_declaration(&self, decl: &SortDeclaration<Self>) -> ExecResult<SortDeclaration<Internal<L, C, F>>, Error...
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `upgrade_pattern`
[INFO] [stdout]    --> src/client/interface.rs:220:16
[INFO] [stdout]     |
[INFO] [stdout] 220 |     pub(crate) fn upgrade_pattern(&self, _pattern: &Typed<Pattern<Internal<L, C, F>>>) -> ExecResult<Typed<Pattern<Self>>, Error<L, C, S,...
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `upgrade_abstract_sort`
[INFO] [stdout]    --> src/client/interface.rs:247:16
[INFO] [stdout]     |
[INFO] [stdout] 247 |     pub(crate) fn upgrade_abstract_sort(&self, sort: &AbstractGroundSort<Ident>) -> ExecResult<AbstractGroundSort<S>, Error<L, C, S, F>> {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.32s
[INFO] running `Command { std: "docker" "inspect" "26eec218ac2ff3b2cac33200f55ee42b98fba7727b6c04e60dd450b61258f7f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26eec218ac2ff3b2cac33200f55ee42b98fba7727b6c04e60dd450b61258f7f3", kill_on_drop: false }`
[INFO] [stdout] 26eec218ac2ff3b2cac33200f55ee42b98fba7727b6c04e60dd450b61258f7f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ede587d3c5a76301d37974b87e589fcd7074b92e4228b05f18e960bbdeeb1b82
[INFO] running `Command { std: "docker" "start" "-a" "ede587d3c5a76301d37974b87e589fcd7074b92e4228b05f18e960bbdeeb1b82", kill_on_drop: false }`
[INFO] [stderr]    Compiling smt2 v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `downgrade_pattern`
[INFO] [stdout]   --> src/client/interface.rs:85:16
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub(crate) fn downgrade_pattern(&self, _pattern: &Typed<Pattern<Self>>) -> ExecResult<Typed<Pattern<Internal<L, C, F>>>, Error<L, C, ...
[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: `downgrade_sort_declaration`
[INFO] [stdout]    --> src/client/interface.rs:148:16
[INFO] [stdout]     |
[INFO] [stdout] 148 |     pub(crate) fn downgrade_sort_declaration(&self, decl: &SortDeclaration<Self>) -> ExecResult<SortDeclaration<Internal<L, C, F>>, Error...
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `upgrade_pattern`
[INFO] [stdout]    --> src/client/interface.rs:220:16
[INFO] [stdout]     |
[INFO] [stdout] 220 |     pub(crate) fn upgrade_pattern(&self, _pattern: &Typed<Pattern<Internal<L, C, F>>>) -> ExecResult<Typed<Pattern<Self>>, Error<L, C, S,...
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `upgrade_abstract_sort`
[INFO] [stdout]    --> src/client/interface.rs:247:16
[INFO] [stdout]     |
[INFO] [stdout] 247 |     pub(crate) fn upgrade_abstract_sort(&self, sort: &AbstractGroundSort<Ident>) -> ExecResult<AbstractGroundSort<S>, Error<L, C, S, F>> {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `downgrade_pattern`
[INFO] [stdout]   --> src/client/interface.rs:85:16
[INFO] [stdout]    |
[INFO] [stdout] 85 |     pub(crate) fn downgrade_pattern(&self, _pattern: &Typed<Pattern<Self>>) -> ExecResult<Typed<Pattern<Internal<L, C, F>>>, Error<L, C, ...
[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: `downgrade_sort_declaration`
[INFO] [stdout]    --> src/client/interface.rs:148:16
[INFO] [stdout]     |
[INFO] [stdout] 148 |     pub(crate) fn downgrade_sort_declaration(&self, decl: &SortDeclaration<Self>) -> ExecResult<SortDeclaration<Internal<L, C, F>>, Error...
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `upgrade_pattern`
[INFO] [stdout]    --> src/client/interface.rs:220:16
[INFO] [stdout]     |
[INFO] [stdout] 220 |     pub(crate) fn upgrade_pattern(&self, _pattern: &Typed<Pattern<Internal<L, C, F>>>) -> ExecResult<Typed<Pattern<Self>>, Error<L, C, S,...
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `upgrade_abstract_sort`
[INFO] [stdout]    --> src/client/interface.rs:247:16
[INFO] [stdout]     |
[INFO] [stdout] 247 |     pub(crate) fn upgrade_abstract_sort(&self, sort: &AbstractGroundSort<Ident>) -> ExecResult<AbstractGroundSort<S>, Error<L, C, S, F>> {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.51s
[INFO] running `Command { std: "docker" "inspect" "ede587d3c5a76301d37974b87e589fcd7074b92e4228b05f18e960bbdeeb1b82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ede587d3c5a76301d37974b87e589fcd7074b92e4228b05f18e960bbdeeb1b82", kill_on_drop: false }`
[INFO] [stdout] ede587d3c5a76301d37974b87e589fcd7074b92e4228b05f18e960bbdeeb1b82
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2c3ce2bf68362422b5819cdfa8c49e267bb2d7c859ce9464b0e57979fbf4ec2e
[INFO] running `Command { std: "docker" "start" "-a" "2c3ce2bf68362422b5819cdfa8c49e267bb2d7c859ce9464b0e57979fbf4ec2e", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: associated function is never used: `downgrade_pattern`
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/client/interface.rs:85:16
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 85 |     pub(crate) fn downgrade_pattern(&self, _pattern: &Typed<Pattern<Self>>) -> ExecResult<Typed<Pattern<Internal<L, C, F>>>, Error<L, C, ...
[INFO] [stdout] 
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `downgrade_sort_declaration`
[INFO] [stderr]    --> src/client/interface.rs:148:16
[INFO] [stderr]     |
[INFO] [stderr] 148 |     pub(crate) fn downgrade_sort_declaration(&self, decl: &SortDeclaration<Self>) -> ExecResult<SortDeclaration<Internal<L, C, F>>, Error...
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `upgrade_pattern`
[INFO] [stderr]    --> src/client/interface.rs:220:16
[INFO] [stderr]     |
[INFO] [stderr] 220 |     pub(crate) fn upgrade_pattern(&self, _pattern: &Typed<Pattern<Internal<L, C, F>>>) -> ExecResult<Typed<Pattern<Self>>, Error<L, C, S,...
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `upgrade_abstract_sort`
[INFO] [stderr]    --> src/client/interface.rs:247:16
[INFO] [stderr]     |
[INFO] [stderr] 247 |     pub(crate) fn upgrade_abstract_sort(&self, sort: &AbstractGroundSort<Ident>) -> ExecResult<AbstractGroundSort<S>, Error<L, C, S, F>> {
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `downgrade_pattern`
[INFO] [stderr]   --> src/client/interface.rs:85:16
[INFO] [stderr]    |
[INFO] [stderr] 85 |     pub(crate) fn downgrade_pattern(&self, _pattern: &Typed<Pattern<Self>>) -> ExecResult<Typed<Pattern<Internal<L, C, F>>>, Error<L, C, ...
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `downgrade_sort_declaration`
[INFO] [stderr]    --> src/client/interface.rs:148:16
[INFO] [stderr]     |
[INFO] [stderr] 148 |     pub(crate) fn downgrade_sort_declaration(&self, decl: &SortDeclaration<Self>) -> ExecResult<SortDeclaration<Internal<L, C, F>>, Error...
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `upgrade_pattern`
[INFO] [stderr]    --> src/client/interface.rs:220:16
[INFO] [stderr]     |
[INFO] [stderr] 220 |     pub(crate) fn upgrade_pattern(&self, _pattern: &Typed<Pattern<Internal<L, C, F>>>) -> ExecResult<Typed<Pattern<Self>>, Error<L, C, S,...
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `upgrade_abstract_sort`
[INFO] [stderr]    --> src/client/interface.rs:247:16
[INFO] [stderr]     |
[INFO] [stderr] 247 |     pub(crate) fn upgrade_abstract_sort(&self, sort: &AbstractGroundSort<Ident>) -> ExecResult<AbstractGroundSort<S>, Error<L, C, S, F>> {
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/smt2-dfe9025a39ce7854)
[INFO] [stderr]    Doc-tests smt2
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2c3ce2bf68362422b5819cdfa8c49e267bb2d7c859ce9464b0e57979fbf4ec2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c3ce2bf68362422b5819cdfa8c49e267bb2d7c859ce9464b0e57979fbf4ec2e", kill_on_drop: false }`
[INFO] [stdout] 2c3ce2bf68362422b5819cdfa8c49e267bb2d7c859ce9464b0e57979fbf4ec2e