[INFO] fetching crate smt2 0.2.0...
[INFO] checking smt2-0.2.0 against master#c8551d3c63c51f290cf1dc9dc4714249ea849fd1 for pr-148946
[INFO] extracting crate smt2 0.2.0 into /workspace/builds/worker-0-tc1/source
[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-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate smt2 0.2.0 on toolchain c8551d3c63c51f290cf1dc9dc4714249ea849fd1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c8551d3c63c51f290cf1dc9dc4714249ea849fd1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c8551d3c63c51f290cf1dc9dc4714249ea849fd1" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 8 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c8551d3c63c51f290cf1dc9dc4714249ea849fd1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded utf8-decode v1.0.1
[INFO] [stderr]   Downloaded redox_termios v0.1.3
[INFO] [stderr]   Downloaded termion v1.5.6
[INFO] [stderr]   Downloaded source-span v2.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c8551d3c63c51f290cf1dc9dc4714249ea849fd1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cbe8924bd25d474b636bd90e7aace47448de8ec8f821a87a0ae4decdad8e7047
[INFO] running `Command { std: "docker" "start" "-a" "cbe8924bd25d474b636bd90e7aace47448de8ec8f821a87a0ae4decdad8e7047", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cbe8924bd25d474b636bd90e7aace47448de8ec8f821a87a0ae4decdad8e7047", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbe8924bd25d474b636bd90e7aace47448de8ec8f821a87a0ae4decdad8e7047", kill_on_drop: false }`
[INFO] [stdout] cbe8924bd25d474b636bd90e7aace47448de8ec8f821a87a0ae4decdad8e7047
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c8551d3c63c51f290cf1dc9dc4714249ea849fd1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b75007e969bc275bc77dfe0d4f3a716b550a87114294684f099fe6e2ae3736db
[INFO] running `Command { std: "docker" "start" "-a" "b75007e969bc275bc77dfe0d4f3a716b550a87114294684f099fe6e2ae3736db", kill_on_drop: false }`
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking utf8-decode v1.0.1
[INFO] [stderr]     Checking termion v1.5.6
[INFO] [stderr]     Checking source-span v2.7.0
[INFO] [stderr]     Checking smt2 v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `downgrade_pattern`, `downgrade_sort_declaration`, `upgrade_pattern`, and `upgrade_abstract_sort` are never used
[INFO] [stdout]    --> src/client/interface.rs:85:16
[INFO] [stdout]     |
[INFO] [stdout]  19 | impl<L, C: Constant, S: Sort, F: Function> Client<L, C, S, F> {
[INFO] [stdout]     | ------------------------------------------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  85 |     pub(crate) fn downgrade_pattern(&self, _pattern: &Typed<Pattern<Self>>) -> ExecResult<Typed<Pattern<Internal<L, C, F>>>, Error<...
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 148 |     pub(crate) fn downgrade_sort_declaration(&self, decl: &SortDeclaration<Self>) -> ExecResult<SortDeclaration<Internal<L, C, F>>,...
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 220 |     pub(crate) fn upgrade_pattern(&self, _pattern: &Typed<Pattern<Internal<L, C, F>>>) -> ExecResult<Typed<Pattern<Self>>, Error<L,...
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 247 |     pub(crate) fn upgrade_abstract_sort(&self, sort: &AbstractGroundSort<Ident>) -> ExecResult<AbstractGroundSort<S>, Error<L, C, S...
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `downgrade_pattern`, `downgrade_sort_declaration`, `upgrade_pattern`, and `upgrade_abstract_sort` are never used
[INFO] [stdout]    --> src/client/interface.rs:85:16
[INFO] [stdout]     |
[INFO] [stdout]  19 | impl<L, C: Constant, S: Sort, F: Function> Client<L, C, S, F> {
[INFO] [stdout]     | ------------------------------------------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  85 |     pub(crate) fn downgrade_pattern(&self, _pattern: &Typed<Pattern<Self>>) -> ExecResult<Typed<Pattern<Internal<L, C, F>>>, Error<...
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 148 |     pub(crate) fn downgrade_sort_declaration(&self, decl: &SortDeclaration<Self>) -> ExecResult<SortDeclaration<Internal<L, C, F>>,...
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 220 |     pub(crate) fn upgrade_pattern(&self, _pattern: &Typed<Pattern<Internal<L, C, F>>>) -> ExecResult<Typed<Pattern<Self>>, Error<L,...
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 247 |     pub(crate) fn upgrade_abstract_sort(&self, sort: &AbstractGroundSort<Ident>) -> ExecResult<AbstractGroundSort<S>, Error<L, C, S...
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.82s
[INFO] running `Command { std: "docker" "inspect" "b75007e969bc275bc77dfe0d4f3a716b550a87114294684f099fe6e2ae3736db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b75007e969bc275bc77dfe0d4f3a716b550a87114294684f099fe6e2ae3736db", kill_on_drop: false }`
[INFO] [stdout] b75007e969bc275bc77dfe0d4f3a716b550a87114294684f099fe6e2ae3736db