[INFO] fetching crate lichen 0.3.7...
[INFO] checking lichen-0.3.7 against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] extracting crate lichen 0.3.7 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate lichen 0.3.7 on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lichen 0.3.7
[INFO] finished tweaking crates.io crate lichen 0.3.7
[INFO] tweaked toml for crates.io crate lichen 0.3.7 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "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] d5494a6b996f9e6d768d08acb0fe2fc0a85335eb9ceea494ea2c941f7d6979cf
[INFO] running `Command { std: "docker" "start" "-a" "d5494a6b996f9e6d768d08acb0fe2fc0a85335eb9ceea494ea2c941f7d6979cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5494a6b996f9e6d768d08acb0fe2fc0a85335eb9ceea494ea2c941f7d6979cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5494a6b996f9e6d768d08acb0fe2fc0a85335eb9ceea494ea2c941f7d6979cf", kill_on_drop: false }`
[INFO] [stdout] d5494a6b996f9e6d768d08acb0fe2fc0a85335eb9ceea494ea2c941f7d6979cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 92a6b2e4943ff1f766b4c5ba15ffd4c7e63731ad9bbd242aa4d0660c42be09de
[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" "92a6b2e4943ff1f766b4c5ba15ffd4c7e63731ad9bbd242aa4d0660c42be09de", kill_on_drop: false }`
[INFO] [stderr]     Checking lichen v0.3.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/parse.rs:194:37
[INFO] [stdout]     |
[INFO] [stdout] 194 | ...                   let r = try!(Var::parse(v));
[INFO] [stdout]     |                               ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/parse.rs:205:43
[INFO] [stdout]     |
[INFO] [stdout] 205 | ...                   let src = try!(Src::parse(vec![IR::Sym(qsym),
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/parse.rs:211:39
[INFO] [stdout]     |
[INFO] [stdout] 211 | ...                   let src = try!(Src::parse(exps));
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/source.rs:310:37
[INFO] [stdout]     |
[INFO] [stdout] 310 |                     let (m, v, a) = try!(Mut::parse(&mut exp));
[INFO] [stdout]     |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/source.rs:319:37
[INFO] [stdout]     |
[INFO] [stdout] 319 | ...                   let m = try!(Src::parse(v_ir));
[INFO] [stdout]     |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/source.rs:341:33
[INFO] [stdout]     |
[INFO] [stdout] 341 |                         let r = try!(Var::parse(n));
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/source.rs:355:33
[INFO] [stdout]     |
[INFO] [stdout] 355 |                         let r = try!(Var::parse(n));
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/source.rs:373:37
[INFO] [stdout]     |
[INFO] [stdout] 373 | ...                   let r = try!(Var::parse(e));
[INFO] [stdout]     |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/source.rs:384:33
[INFO] [stdout]     |
[INFO] [stdout] 384 |                         let r = try!(Logic::parse(exp));
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/source.rs:390:33
[INFO] [stdout]     |
[INFO] [stdout] 390 |                         let r = try!(Logic::parse_comp(keys, exp));
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/var.rs:128:25
[INFO] [stdout]     |
[INFO] [stdout] 128 |                 let r = try!(Var::parse(n));
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/var.rs:157:21
[INFO] [stdout]     |
[INFO] [stdout] 157 |             let r = try!(Var::parse(exps.pop().unwrap()));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/logic.rs:49:24
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub struct LogicFn(Box<Fn(&Def,&Logics) -> Option<bool> + Send>);
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Def,&Logics) -> Option<bool> + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/logic.rs:98:23
[INFO] [stdout]    |
[INFO] [stdout] 98 |             let var = try!(Var::parse(var));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/logic.rs:102:23
[INFO] [stdout]     |
[INFO] [stdout] 102 |             let key = try!(Var::parse(key));
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/fun.rs:4:20
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Fun(Box<FnMut(&[Var], &Def) -> Option<Var> + Send>);
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&[Var], &Def) -> Option<Var> + Send`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/parse.rs:194:37
[INFO] [stdout]     |
[INFO] [stdout] 194 | ...                   let r = try!(Var::parse(v));
[INFO] [stdout]     |                               ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/parse.rs:205:43
[INFO] [stdout]     |
[INFO] [stdout] 205 | ...                   let src = try!(Src::parse(vec![IR::Sym(qsym),
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/parse.rs:211:39
[INFO] [stdout]     |
[INFO] [stdout] 211 | ...                   let src = try!(Src::parse(exps));
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/source.rs:310:37
[INFO] [stdout]     |
[INFO] [stdout] 310 |                     let (m, v, a) = try!(Mut::parse(&mut exp));
[INFO] [stdout]     |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/source.rs:319:37
[INFO] [stdout]     |
[INFO] [stdout] 319 | ...                   let m = try!(Src::parse(v_ir));
[INFO] [stdout]     |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/source.rs:341:33
[INFO] [stdout]     |
[INFO] [stdout] 341 |                         let r = try!(Var::parse(n));
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/source.rs:355:33
[INFO] [stdout]     |
[INFO] [stdout] 355 |                         let r = try!(Var::parse(n));
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/source.rs:373:37
[INFO] [stdout]     |
[INFO] [stdout] 373 | ...                   let r = try!(Var::parse(e));
[INFO] [stdout]     |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/source.rs:384:33
[INFO] [stdout]     |
[INFO] [stdout] 384 |                         let r = try!(Logic::parse(exp));
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/source.rs:390:33
[INFO] [stdout]     |
[INFO] [stdout] 390 |                         let r = try!(Logic::parse_comp(keys, exp));
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/var.rs:128:25
[INFO] [stdout]     |
[INFO] [stdout] 128 |                 let r = try!(Var::parse(n));
[INFO] [stdout]     |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/var.rs:157:21
[INFO] [stdout]     |
[INFO] [stdout] 157 |             let r = try!(Var::parse(exps.pop().unwrap()));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/logic.rs:49:24
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub struct LogicFn(Box<Fn(&Def,&Logics) -> Option<bool> + Send>);
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Def,&Logics) -> Option<bool> + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/logic.rs:98:23
[INFO] [stdout]    |
[INFO] [stdout] 98 |             let var = try!(Var::parse(var));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/logic.rs:102:23
[INFO] [stdout]     |
[INFO] [stdout] 102 |             let key = try!(Var::parse(key));
[INFO] [stdout]     |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/fun.rs:4:20
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Fun(Box<FnMut(&[Var], &Def) -> Option<Var> + Send>);
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&[Var], &Def) -> Option<Var> + Send`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/source.rs:240:37
[INFO] [stdout]     |
[INFO] [stdout] 240 |                         if let Some(mut mfn) = fun.get_mut(fun_name) {
[INFO] [stdout]     |                                     ----^^^
[INFO] [stdout]     |                                     |
[INFO] [stdout]     |                                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/source.rs:240:37
[INFO] [stdout]     |
[INFO] [stdout] 240 |                         if let Some(mut mfn) = fun.get_mut(fun_name) {
[INFO] [stdout]     |                                     ----^^^
[INFO] [stdout]     |                                     |
[INFO] [stdout]     |                                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.49s
[INFO] running `Command { std: "docker" "inspect" "92a6b2e4943ff1f766b4c5ba15ffd4c7e63731ad9bbd242aa4d0660c42be09de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92a6b2e4943ff1f766b4c5ba15ffd4c7e63731ad9bbd242aa4d0660c42be09de", kill_on_drop: false }`
[INFO] [stdout] 92a6b2e4943ff1f766b4c5ba15ffd4c7e63731ad9bbd242aa4d0660c42be09de