[INFO] fetching crate postfix 0.1.2...
[INFO] building postfix-0.1.2 against try#615edd3ad1cf6871c977dc900317cb6c2070fd6b for pr-97334
[INFO] extracting crate postfix 0.1.2 into /workspace/builds/worker-16/source
[INFO] validating manifest of crates.io crate postfix 0.1.2 on toolchain 615edd3ad1cf6871c977dc900317cb6c2070fd6b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate postfix 0.1.2
[INFO] finished tweaking crates.io crate postfix 0.1.2
[INFO] tweaked toml for crates.io crate postfix 0.1.2 written to /workspace/builds/worker-16/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d0812694c9ab515e756f1d412d898d85049201963dd01748a4d9a75c3ac32818
[INFO] running `Command { std: "docker" "start" "-a" "d0812694c9ab515e756f1d412d898d85049201963dd01748a4d9a75c3ac32818", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d0812694c9ab515e756f1d412d898d85049201963dd01748a4d9a75c3ac32818", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0812694c9ab515e756f1d412d898d85049201963dd01748a4d9a75c3ac32818", kill_on_drop: false }`
[INFO] [stdout] d0812694c9ab515e756f1d412d898d85049201963dd01748a4d9a75c3ac32818
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6229aef4da3133bba1a38bc72f5f6f535f9087efcd60479a0fb1c181d0de3d3a
[INFO] running `Command { std: "docker" "start" "-a" "6229aef4da3133bba1a38bc72f5f6f535f9087efcd60479a0fb1c181d0de3d3a", kill_on_drop: false }`
[INFO] [stderr]    Compiling postfix v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/operator.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 |     Unary(&'a Fn(f64) -> Result<f64, &'static str>),
[INFO] [stdout]   |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) 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] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 2 -     Unary(&'a Fn(f64) -> Result<f64, &'static str>),
[INFO] [stdout] 2 +     Unary(&'a dyn Fn(f64) -> Result<f64, &'static str>),
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/operator.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 |     Binary(&'a Fn(f64, f64) -> Result<f64, &'static str>),
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) 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] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 3 -     Binary(&'a Fn(f64, f64) -> Result<f64, &'static str>),
[INFO] [stdout] 3 +     Binary(&'a dyn Fn(f64, f64) -> Result<f64, &'static str>),
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/operator.rs:14:25
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn unary(f: &'a Fn(f64) -> Result<f64, &'static str>) -> Self {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 14 -     pub fn unary(f: &'a Fn(f64) -> Result<f64, &'static str>) -> Self {
[INFO] [stdout] 14 +     pub fn unary(f: &'a dyn Fn(f64) -> Result<f64, &'static str>) -> Self {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/operator.rs:18:26
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn binary(f: &'a Fn(f64, f64) -> Result<f64, &'static str>) -> Self {
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 18 -     pub fn binary(f: &'a Fn(f64, f64) -> Result<f64, &'static str>) -> Self {
[INFO] [stdout] 18 +     pub fn binary(f: &'a dyn Fn(f64, f64) -> Result<f64, &'static str>) -> Self {
[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 0.47s
[INFO] running `Command { std: "docker" "inspect" "6229aef4da3133bba1a38bc72f5f6f535f9087efcd60479a0fb1c181d0de3d3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6229aef4da3133bba1a38bc72f5f6f535f9087efcd60479a0fb1c181d0de3d3a", kill_on_drop: false }`
[INFO] [stdout] 6229aef4da3133bba1a38bc72f5f6f535f9087efcd60479a0fb1c181d0de3d3a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-16/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f87140ab167dee5c3203353edab6fd308dd2b5bc68e6dfdeb69c91c8609c7a1
[INFO] running `Command { std: "docker" "start" "-a" "9f87140ab167dee5c3203353edab6fd308dd2b5bc68e6dfdeb69c91c8609c7a1", kill_on_drop: false }`
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/operator.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 |     Unary(&'a Fn(f64) -> Result<f64, &'static str>),
[INFO] [stdout]   |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) 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] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 2 -     Unary(&'a Fn(f64) -> Result<f64, &'static str>),
[INFO] [stdout] 2 +     Unary(&'a dyn Fn(f64) -> Result<f64, &'static str>),
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/operator.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 |     Binary(&'a Fn(f64, f64) -> Result<f64, &'static str>),
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) 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] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 3 -     Binary(&'a Fn(f64, f64) -> Result<f64, &'static str>),
[INFO] [stdout] 3 +     Binary(&'a dyn Fn(f64, f64) -> Result<f64, &'static str>),
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling postfix v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/operator.rs:14:25
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn unary(f: &'a Fn(f64) -> Result<f64, &'static str>) -> Self {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 14 -     pub fn unary(f: &'a Fn(f64) -> Result<f64, &'static str>) -> Self {
[INFO] [stdout] 14 +     pub fn unary(f: &'a dyn Fn(f64) -> Result<f64, &'static str>) -> Self {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/operator.rs:18:26
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn binary(f: &'a Fn(f64, f64) -> Result<f64, &'static str>) -> Self {
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 18 -     pub fn binary(f: &'a Fn(f64, f64) -> Result<f64, &'static str>) -> Self {
[INFO] [stdout] 18 +     pub fn binary(f: &'a dyn Fn(f64, f64) -> Result<f64, &'static str>) -> Self {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/operator.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 |     Unary(&'a Fn(f64) -> Result<f64, &'static str>),
[INFO] [stdout]   |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) 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] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 2 -     Unary(&'a Fn(f64) -> Result<f64, &'static str>),
[INFO] [stdout] 2 +     Unary(&'a dyn Fn(f64) -> Result<f64, &'static str>),
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/operator.rs:3:16
[INFO] [stdout]   |
[INFO] [stdout] 3 |     Binary(&'a Fn(f64, f64) -> Result<f64, &'static str>),
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) 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] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 3 -     Binary(&'a Fn(f64, f64) -> Result<f64, &'static str>),
[INFO] [stdout] 3 +     Binary(&'a dyn Fn(f64, f64) -> Result<f64, &'static str>),
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/operator.rs:14:25
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn unary(f: &'a Fn(f64) -> Result<f64, &'static str>) -> Self {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 14 -     pub fn unary(f: &'a Fn(f64) -> Result<f64, &'static str>) -> Self {
[INFO] [stdout] 14 +     pub fn unary(f: &'a dyn Fn(f64) -> Result<f64, &'static str>) -> Self {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/operator.rs:18:26
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn binary(f: &'a Fn(f64, f64) -> Result<f64, &'static str>) -> Self {
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) 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] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 18 -     pub fn binary(f: &'a Fn(f64, f64) -> Result<f64, &'static str>) -> Self {
[INFO] [stdout] 18 +     pub fn binary(f: &'a dyn Fn(f64, f64) -> Result<f64, &'static str>) -> Self {
[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 0.53s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/postfix-8a08852b3dcca77f)
[INFO] running `Command { std: "docker" "inspect" "9f87140ab167dee5c3203353edab6fd308dd2b5bc68e6dfdeb69c91c8609c7a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f87140ab167dee5c3203353edab6fd308dd2b5bc68e6dfdeb69c91c8609c7a1", kill_on_drop: false }`
[INFO] [stdout] 9f87140ab167dee5c3203353edab6fd308dd2b5bc68e6dfdeb69c91c8609c7a1