[INFO] fetching crate hc 0.1.2...
[INFO] checking hc-0.1.2 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate hc 0.1.2 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate hc 0.1.2
[INFO] finished tweaking crates.io crate hc 0.1.2
[INFO] tweaked toml for crates.io crate hc 0.1.2 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate hc 0.1.2 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 13 packages to latest compatible versions
[INFO] [stderr]       Adding itertools v0.5.10 (available: v0.14.0)
[INFO] [stderr]       Adding rustyline v1.0.0 (available: v16.0.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7f37afd30ef40b32a9def434f1d3e3633910d19bd9715c2018ed5ee1807939f7
[INFO] running `Command { std: "docker" "start" "-a" "7f37afd30ef40b32a9def434f1d3e3633910d19bd9715c2018ed5ee1807939f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7f37afd30ef40b32a9def434f1d3e3633910d19bd9715c2018ed5ee1807939f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f37afd30ef40b32a9def434f1d3e3633910d19bd9715c2018ed5ee1807939f7", kill_on_drop: false }`
[INFO] [stdout] 7f37afd30ef40b32a9def434f1d3e3633910d19bd9715c2018ed5ee1807939f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a9221b3d73e1fb44e9ffdb46cf8084397e71ed148ecc73811abbcf2ddabcc7f9
[INFO] running `Command { std: "docker" "start" "-a" "a9221b3d73e1fb44e9ffdb46cf8084397e71ed148ecc73811abbcf2ddabcc7f9", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]     Checking unicode-width v0.1.14
[INFO] [stderr]     Checking unicode-width v0.2.1
[INFO] [stderr]     Checking encode_unicode v0.1.3
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking itertools v0.5.10
[INFO] [stderr]     Checking getopts v0.2.23
[INFO] [stderr]     Checking rustyline v1.0.0
[INFO] [stderr]     Checking hc v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:115:17
[INFO] [stdout]     |
[INFO] [stdout] 115 |       let lhs = try!(execute(ctx, &*l));
[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/executor.rs:116:17
[INFO] [stdout]     |
[INFO] [stdout] 116 |       let rhs = try!(execute(ctx, &*r));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:125:17
[INFO] [stdout]     |
[INFO] [stdout] 125 |       let lhs = try!(execute(ctx, &*l));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:126:17
[INFO] [stdout]     |
[INFO] [stdout] 126 |       let rhs = try!(execute(ctx, &*r));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:135:17
[INFO] [stdout]     |
[INFO] [stdout] 135 |       let lhs = try!(execute(ctx, &*l));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:136:17
[INFO] [stdout]     |
[INFO] [stdout] 136 |       let rhs = try!(execute(ctx, &*r));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:145:17
[INFO] [stdout]     |
[INFO] [stdout] 145 |       let lhs = try!(execute(ctx, &*l));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:146:17
[INFO] [stdout]     |
[INFO] [stdout] 146 |       let rhs = try!(execute(ctx, &*r));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:159:17
[INFO] [stdout]     |
[INFO] [stdout] 159 |       let lhs = try!(execute(ctx, &*l));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:160:17
[INFO] [stdout]     |
[INFO] [stdout] 160 |       let rhs = try!(execute(ctx, &*r));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:169:17
[INFO] [stdout]     |
[INFO] [stdout] 169 |       let lhs = try!(execute(ctx, &*l));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:170:17
[INFO] [stdout]     |
[INFO] [stdout] 170 |       let rhs = try!(execute(ctx, &*r));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:179:17
[INFO] [stdout]     |
[INFO] [stdout] 179 |       let lhs = try!(execute(ctx, &*l));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:180:17
[INFO] [stdout]     |
[INFO] [stdout] 180 |       let rhs = try!(execute(ctx, &*r));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:189:17
[INFO] [stdout]     |
[INFO] [stdout] 189 |       let lhs = try!(execute(ctx, &*l));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:190:17
[INFO] [stdout]     |
[INFO] [stdout] 190 |       let rhs = try!(execute(ctx, &*r));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:199:17
[INFO] [stdout]     |
[INFO] [stdout] 199 |       let lhs = try!(execute(ctx, &*l));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:200:17
[INFO] [stdout]     |
[INFO] [stdout] 200 |       let rhs = try!(execute(ctx, &*r));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:209:17
[INFO] [stdout]     |
[INFO] [stdout] 209 |       let lhs = try!(execute(ctx, &*l));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:210:17
[INFO] [stdout]     |
[INFO] [stdout] 210 |       let rhs = try!(execute(ctx, &*r));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:219:17
[INFO] [stdout]     |
[INFO] [stdout] 219 |       let lhs = try!(execute(ctx, &*l));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:220:17
[INFO] [stdout]     |
[INFO] [stdout] 220 |       let rhs = try!(execute(ctx, &*r));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:229:17
[INFO] [stdout]     |
[INFO] [stdout] 229 |       let rhs = try!(execute(ctx, &*r));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:115:17
[INFO] [stdout]     |
[INFO] [stdout] 115 |       let lhs = try!(execute(ctx, &*l));
[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/executor.rs:116:17
[INFO] [stdout]     |
[INFO] [stdout] 116 |       let rhs = try!(execute(ctx, &*r));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:125:17
[INFO] [stdout]     |
[INFO] [stdout] 125 |       let lhs = try!(execute(ctx, &*l));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:126:17
[INFO] [stdout]     |
[INFO] [stdout] 126 |       let rhs = try!(execute(ctx, &*r));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:135:17
[INFO] [stdout]     |
[INFO] [stdout] 135 |       let lhs = try!(execute(ctx, &*l));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:136:17
[INFO] [stdout]     |
[INFO] [stdout] 136 |       let rhs = try!(execute(ctx, &*r));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:145:17
[INFO] [stdout]     |
[INFO] [stdout] 145 |       let lhs = try!(execute(ctx, &*l));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:146:17
[INFO] [stdout]     |
[INFO] [stdout] 146 |       let rhs = try!(execute(ctx, &*r));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:159:17
[INFO] [stdout]     |
[INFO] [stdout] 159 |       let lhs = try!(execute(ctx, &*l));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:160:17
[INFO] [stdout]     |
[INFO] [stdout] 160 |       let rhs = try!(execute(ctx, &*r));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:169:17
[INFO] [stdout]     |
[INFO] [stdout] 169 |       let lhs = try!(execute(ctx, &*l));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:170:17
[INFO] [stdout]     |
[INFO] [stdout] 170 |       let rhs = try!(execute(ctx, &*r));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:179:17
[INFO] [stdout]     |
[INFO] [stdout] 179 |       let lhs = try!(execute(ctx, &*l));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:180:17
[INFO] [stdout]     |
[INFO] [stdout] 180 |       let rhs = try!(execute(ctx, &*r));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:189:17
[INFO] [stdout]     |
[INFO] [stdout] 189 |       let lhs = try!(execute(ctx, &*l));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:190:17
[INFO] [stdout]     |
[INFO] [stdout] 190 |       let rhs = try!(execute(ctx, &*r));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:199:17
[INFO] [stdout]     |
[INFO] [stdout] 199 |       let lhs = try!(execute(ctx, &*l));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:200:17
[INFO] [stdout]     |
[INFO] [stdout] 200 |       let rhs = try!(execute(ctx, &*r));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:209:17
[INFO] [stdout]     |
[INFO] [stdout] 209 |       let lhs = try!(execute(ctx, &*l));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:210:17
[INFO] [stdout]     |
[INFO] [stdout] 210 |       let rhs = try!(execute(ctx, &*r));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:219:17
[INFO] [stdout]     |
[INFO] [stdout] 219 |       let lhs = try!(execute(ctx, &*l));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:220:17
[INFO] [stdout]     |
[INFO] [stdout] 220 |       let rhs = try!(execute(ctx, &*r));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/executor.rs:229:17
[INFO] [stdout]     |
[INFO] [stdout] 229 |       let rhs = try!(execute(ctx, &*r));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/main.rs:40:24
[INFO] [stdout]    |
[INFO] [stdout] 40 |     Err(f) => { panic!(f.to_string()) }
[INFO] [stdout]    |                        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 40 |     Err(f) => { panic!("{}", f.to_string()) }
[INFO] [stdout]    |                        +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/main.rs:40:24
[INFO] [stdout]    |
[INFO] [stdout] 40 |     Err(f) => { panic!(f.to_string()) }
[INFO] [stdout]    |                        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 40 |     Err(f) => { panic!("{}", f.to_string()) }
[INFO] [stdout]    |                        +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.75s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: bitflags v0.4.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "a9221b3d73e1fb44e9ffdb46cf8084397e71ed148ecc73811abbcf2ddabcc7f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9221b3d73e1fb44e9ffdb46cf8084397e71ed148ecc73811abbcf2ddabcc7f9", kill_on_drop: false }`
[INFO] [stdout] a9221b3d73e1fb44e9ffdb46cf8084397e71ed148ecc73811abbcf2ddabcc7f9