[INFO] fetching crate algar 0.4.1...
[INFO] checking algar-0.4.1 against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] extracting crate algar 0.4.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate algar 0.4.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate algar 0.4.1
[INFO] tweaked toml for crates.io crate algar 0.4.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate algar 0.4.1 on toolchain 0611f7de057c584b8771102fde7aed6c70c71d3b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate algar 0.4.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 14c3a9c83ae128194c5458edd2a08a5d1eb83678d02ddc47ff49f5fd3fb070bc
[INFO] running `Command { std: "docker" "start" "-a" "14c3a9c83ae128194c5458edd2a08a5d1eb83678d02ddc47ff49f5fd3fb070bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14c3a9c83ae128194c5458edd2a08a5d1eb83678d02ddc47ff49f5fd3fb070bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14c3a9c83ae128194c5458edd2a08a5d1eb83678d02ddc47ff49f5fd3fb070bc", kill_on_drop: false }`
[INFO] [stdout] 14c3a9c83ae128194c5458edd2a08a5d1eb83678d02ddc47ff49f5fd3fb070bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca8f6063fc302fa26d55700836117a94a3ae3dc08cf60de7f5f9b5537b4d5617
[INFO] running `Command { std: "docker" "start" "-a" "ca8f6063fc302fa26d55700836117a94a3ae3dc08cf60de7f5f9b5537b4d5617", kill_on_drop: false }`
[INFO] [stderr]     Checking algar v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: struct `Expr` is never constructed
[INFO] [stdout]   --> examples/expression_problem/1_expr_base_b.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct Expr(Coproduct<IntExpr, MulExpr>);
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `algar` (example "1_expr_base_b") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: struct `Expr` is never constructed
[INFO] [stdout]   --> examples/expression_problem/2_expr_coproduct_of_functors.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct Expr(Box<Op<Expr>>);
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `MulExpr` is never constructed
[INFO] [stdout]   --> examples/expression_problem/2_expr_coproduct_of_functors.rs:80:12
[INFO] [stdout]    |
[INFO] [stdout] 80 | pub struct MulExpr(Box<OpMul<MulExpr>>);
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `algar` (example "2_expr_coproduct_of_functors") due to 2 previous errors
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> examples/turtle/model/helpers.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 |     d: &str,
[INFO] [stdout]    |        ^^^^ the lifetime is elided here
[INFO] [stdout] 46 | ) -> StateT<Turtle, ResultT<Writer<Result<((), Turtle), TurtleError>, String>>> {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 46 | ) -> StateT<'_, Turtle, ResultT<Writer<Result<((), Turtle), TurtleError>, String>>> {
[INFO] [stdout]    |             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> examples/turtle/model/helpers.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 |     a: &str,
[INFO] [stdout]    |        ^^^^ the lifetime is elided here
[INFO] [stdout] 59 | ) -> StateT<Turtle, ResultT<Writer<Result<((), Turtle), TurtleError>, String>>> {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 59 | ) -> StateT<'_, Turtle, ResultT<Writer<Result<((), Turtle), TurtleError>, String>>> {
[INFO] [stdout]    |             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> examples/turtle/model/helpers.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 |     c: &str,
[INFO] [stdout]    |        ^^^^ the lifetime is elided here
[INFO] [stdout] 72 | ) -> StateT<Turtle, ResultT<Writer<Result<((), Turtle), TurtleError>, String>>> {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 72 | ) -> StateT<'_, Turtle, ResultT<Writer<Result<((), Turtle), TurtleError>, String>>> {
[INFO] [stdout]    |             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]  --> examples/turtle/model/turtleM.rs:8:18
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn r#move(d: &str) -> TurtleM<()> {
[INFO] [stdout]   |                  ^^^^     ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]   |                  |
[INFO] [stdout]   |                  the lifetime is elided here
[INFO] [stdout]   |
[INFO] [stdout]   = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn r#move(d: &str) -> TurtleM<'_, ()> {
[INFO] [stdout]   |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> examples/turtle/model/turtleM.rs:12:16
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn turn(a: &str) -> TurtleM<()> {
[INFO] [stdout]    |                ^^^^     ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                |
[INFO] [stdout]    |                the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn turn(a: &str) -> TurtleM<'_, ()> {
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> examples/turtle/model/turtleM.rs:16:25
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn set_pen_color(c: &str) -> TurtleM<()> {
[INFO] [stdout]    |                         ^^^^     ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn set_pen_color(c: &str) -> TurtleM<'_, ()> {
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> examples/turtle/model/helpers.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 |     d: &str,
[INFO] [stdout]    |        ^^^^ the lifetime is elided here
[INFO] [stdout] 46 | ) -> StateT<Turtle, ResultT<Writer<Result<((), Turtle), TurtleError>, String>>> {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 46 | ) -> StateT<'_, Turtle, ResultT<Writer<Result<((), Turtle), TurtleError>, String>>> {
[INFO] [stdout]    |             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> examples/turtle/model/helpers.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 |     a: &str,
[INFO] [stdout]    |        ^^^^ the lifetime is elided here
[INFO] [stdout] 59 | ) -> StateT<Turtle, ResultT<Writer<Result<((), Turtle), TurtleError>, String>>> {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 59 | ) -> StateT<'_, Turtle, ResultT<Writer<Result<((), Turtle), TurtleError>, String>>> {
[INFO] [stdout]    |             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> examples/turtle/model/helpers.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 |     c: &str,
[INFO] [stdout]    |        ^^^^ the lifetime is elided here
[INFO] [stdout] 72 | ) -> StateT<Turtle, ResultT<Writer<Result<((), Turtle), TurtleError>, String>>> {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 72 | ) -> StateT<'_, Turtle, ResultT<Writer<Result<((), Turtle), TurtleError>, String>>> {
[INFO] [stdout]    |             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]  --> examples/turtle/model/turtleM.rs:8:18
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn r#move(d: &str) -> TurtleM<()> {
[INFO] [stdout]   |                  ^^^^     ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]   |                  |
[INFO] [stdout]   |                  the lifetime is elided here
[INFO] [stdout]   |
[INFO] [stdout]   = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn r#move(d: &str) -> TurtleM<'_, ()> {
[INFO] [stdout]   |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> examples/turtle/model/turtleM.rs:12:16
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn turn(a: &str) -> TurtleM<()> {
[INFO] [stdout]    |                ^^^^     ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                |
[INFO] [stdout]    |                the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub fn turn(a: &str) -> TurtleM<'_, ()> {
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> examples/turtle/model/turtleM.rs:16:25
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn set_pen_color(c: &str) -> TurtleM<()> {
[INFO] [stdout]    |                         ^^^^     ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn set_pen_color(c: &str) -> TurtleM<'_, ()> {
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ca8f6063fc302fa26d55700836117a94a3ae3dc08cf60de7f5f9b5537b4d5617", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca8f6063fc302fa26d55700836117a94a3ae3dc08cf60de7f5f9b5537b4d5617", kill_on_drop: false }`
[INFO] [stdout] ca8f6063fc302fa26d55700836117a94a3ae3dc08cf60de7f5f9b5537b4d5617
