[INFO] fetching crate rugenere 0.2.1...
[INFO] testing rugenere-0.2.1 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-8
[INFO] extracting crate rugenere 0.2.1 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate rugenere 0.2.1
[INFO] finished tweaking crates.io crate rugenere 0.2.1
[INFO] tweaked toml for crates.io crate rugenere 0.2.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rugenere 0.2.1 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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]      Locking 14 packages to latest compatible versions
[INFO] [stderr]       Adding clap v2.33.4 (available: v2.34.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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 yaml-rust v0.3.5
[INFO] [stderr]   Downloaded clap v2.33.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 09f69894cf872fe0d7611db9160a4b3e269d099ec72f9c681adb3aa9dfaffa1c
[INFO] running `Command { std: "docker" "start" "-a" "09f69894cf872fe0d7611db9160a4b3e269d099ec72f9c681adb3aa9dfaffa1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "09f69894cf872fe0d7611db9160a4b3e269d099ec72f9c681adb3aa9dfaffa1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09f69894cf872fe0d7611db9160a4b3e269d099ec72f9c681adb3aa9dfaffa1c", kill_on_drop: false }`
[INFO] [stdout] 09f69894cf872fe0d7611db9160a4b3e269d099ec72f9c681adb3aa9dfaffa1c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 90d11f2e2b5bf70fd45737229ae5588f669dc925a7ea6228f050b2f05479af7a
[INFO] running `Command { std: "docker" "start" "-a" "90d11f2e2b5bf70fd45737229ae5588f669dc925a7ea6228f050b2f05479af7a", kill_on_drop: false }`
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling yaml-rust v0.3.5
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.4
[INFO] [stderr]    Compiling rugenere v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lib.rs:55:6
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 0...96 => result + 26,
[INFO] [stdout]    |                  ^^^ help: use `..=` for an inclusive range
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lib.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 |                 123...150 => result - 26,
[INFO] [stdout]    |                    ^^^ help: use `..=` for an inclusive range
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lib.rs:61:6
[INFO] [stdout]    |
[INFO] [stdout] 61 |                 0...64 => result + 26,
[INFO] [stdout]    |                  ^^^ help: use `..=` for an inclusive range
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lib.rs:62:7
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 91...127 => result - 26,
[INFO] [stdout]    |                   ^^^ help: use `..=` for an inclusive range
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: found module declaration for lib.rs
[INFO] [stdout]  --> src/main.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | mod lib;
[INFO] [stdout]   | ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: lib.rs is the root of this crate's library target
[INFO] [stdout]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lib.rs:55:6
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 0...96 => result + 26,
[INFO] [stdout]    |                  ^^^ help: use `..=` for an inclusive range
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lib.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 |                 123...150 => result - 26,
[INFO] [stdout]    |                    ^^^ help: use `..=` for an inclusive range
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lib.rs:61:6
[INFO] [stdout]    |
[INFO] [stdout] 61 |                 0...64 => result + 26,
[INFO] [stdout]    |                  ^^^ help: use `..=` for an inclusive range
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lib.rs:62:7
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 91...127 => result - 26,
[INFO] [stdout]    |                   ^^^ help: use `..=` for an inclusive range
[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/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/main.rs:36:6
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let mut string_result;
[INFO] [stdout]    |         ----^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.94s
[INFO] running `Command { std: "docker" "inspect" "90d11f2e2b5bf70fd45737229ae5588f669dc925a7ea6228f050b2f05479af7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90d11f2e2b5bf70fd45737229ae5588f669dc925a7ea6228f050b2f05479af7a", kill_on_drop: false }`
[INFO] [stdout] 90d11f2e2b5bf70fd45737229ae5588f669dc925a7ea6228f050b2f05479af7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5aa3f863f2ea4ff2137e5a928dfcade8e0fbd4c2cfdd5c49f53675c8968e5db1
[INFO] running `Command { std: "docker" "start" "-a" "5aa3f863f2ea4ff2137e5a928dfcade8e0fbd4c2cfdd5c49f53675c8968e5db1", kill_on_drop: false }`
[INFO] [stderr]    Compiling rugenere v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lib.rs:55:6
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 0...96 => result + 26,
[INFO] [stdout]    |                  ^^^ help: use `..=` for an inclusive range
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lib.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 |                 123...150 => result - 26,
[INFO] [stdout]    |                    ^^^ help: use `..=` for an inclusive range
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lib.rs:61:6
[INFO] [stdout]    |
[INFO] [stdout] 61 |                 0...64 => result + 26,
[INFO] [stdout]    |                  ^^^ help: use `..=` for an inclusive range
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lib.rs:62:7
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 91...127 => result - 26,
[INFO] [stdout]    |                   ^^^ help: use `..=` for an inclusive range
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lib.rs:55:6
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 0...96 => result + 26,
[INFO] [stdout]    |                  ^^^ help: use `..=` for an inclusive range
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lib.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 |                 123...150 => result - 26,
[INFO] [stdout]    |                    ^^^ help: use `..=` for an inclusive range
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lib.rs:61:6
[INFO] [stdout]    |
[INFO] [stdout] 61 |                 0...64 => result + 26,
[INFO] [stdout]    |                  ^^^ help: use `..=` for an inclusive range
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lib.rs:62:7
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 91...127 => result - 26,
[INFO] [stdout]    |                   ^^^ help: use `..=` for an inclusive range
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: found module declaration for lib.rs
[INFO] [stdout]  --> src/main.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | mod lib;
[INFO] [stdout]   | ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: lib.rs is the root of this crate's library target
[INFO] [stdout]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lib.rs:55:6
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 0...96 => result + 26,
[INFO] [stdout]    |                  ^^^ help: use `..=` for an inclusive range
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lib.rs:56:8
[INFO] [stdout]    |
[INFO] [stdout] 56 |                 123...150 => result - 26,
[INFO] [stdout]    |                    ^^^ help: use `..=` for an inclusive range
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lib.rs:61:6
[INFO] [stdout]    |
[INFO] [stdout] 61 |                 0...64 => result + 26,
[INFO] [stdout]    |                  ^^^ help: use `..=` for an inclusive range
[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/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/lib.rs:62:7
[INFO] [stdout]    |
[INFO] [stdout] 62 |                 91...127 => result - 26,
[INFO] [stdout]    |                   ^^^ help: use `..=` for an inclusive range
[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/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/main.rs:36:6
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let mut string_result;
[INFO] [stdout]    |         ----^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "5aa3f863f2ea4ff2137e5a928dfcade8e0fbd4c2cfdd5c49f53675c8968e5db1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5aa3f863f2ea4ff2137e5a928dfcade8e0fbd4c2cfdd5c49f53675c8968e5db1", kill_on_drop: false }`
[INFO] [stdout] 5aa3f863f2ea4ff2137e5a928dfcade8e0fbd4c2cfdd5c49f53675c8968e5db1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0aac17800bec43d52894498b9ee86750760aa135c8e438a5f2911310e4a97f44
[INFO] running `Command { std: "docker" "start" "-a" "0aac17800bec43d52894498b9ee86750760aa135c8e438a5f2911310e4a97f44", kill_on_drop: false }`
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/lib.rs:55:6
[INFO] [stderr]    |
[INFO] [stderr] 55 |                 0...96 => result + 26,
[INFO] [stderr]    |                  ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/lib.rs:56:8
[INFO] [stderr]    |
[INFO] [stderr] 56 |                 123...150 => result - 26,
[INFO] [stderr]    |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/lib.rs:61:6
[INFO] [stderr]    |
[INFO] [stderr] 61 |                 0...64 => result + 26,
[INFO] [stderr]    |                  ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/lib.rs:62:7
[INFO] [stderr]    |
[INFO] [stderr] 62 |                 91...127 => result - 26,
[INFO] [stderr]    |                   ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `rugenere` (lib) generated 4 warnings (run `cargo fix --lib -p rugenere` to apply 4 suggestions)
[INFO] [stderr] warning: `rugenere` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr] warning: found module declaration for lib.rs
[INFO] [stderr]  --> src/main.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | mod lib;
[INFO] [stderr]   | ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: lib.rs is the root of this crate's library target
[INFO] [stderr]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stderr]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:36:6
[INFO] [stderr]    |
[INFO] [stderr] 36 |     let mut string_result;
[INFO] [stderr]    |         ----^^^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `rugenere` (bin "rugenere" test) generated 6 warnings (4 duplicates) (run `cargo fix --bin "rugenere" -p rugenere --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rugenere-b3055c7389fb218c)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test vigenere::tests::test_bigger_key_than_input_decode ... ok
[INFO] [stdout] test vigenere::tests::test_encode ... ok
[INFO] [stdout] test vigenere::tests::test_decode ... ok
[INFO] [stdout] test vigenere::tests::test_bigger_key_than_input_encode ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rugenere-261ceff0ba557e60)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test lib::vigenere::tests::test_bigger_key_than_input_encode ... ok
[INFO] [stdout] test lib::vigenere::tests::test_encode ... ok
[INFO] [stdout] test lib::vigenere::tests::test_decode ... ok
[INFO] [stdout] test lib::vigenere::tests::test_bigger_key_than_input_decode ... ok
[INFO] [stdout] test tests::test_input_file ... ok
[INFO] [stdout] test tests::test_output_file ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- tests::test_output_file stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'tests::test_output_file' (35) panicked at src/main.rs:68:44:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5e28bcff6462 - std::backtrace_rs::backtrace::libunwind::trace::ha50a1f28c7a10cf8
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5e28bcff6462 - std::backtrace_rs::backtrace::trace_unsynchronized::h34f8c4ec82a320bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5e28bcff6462 - std::sys::backtrace::_print_fmt::h2d23e84e13d343bc
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5e28bcff6462 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hde21067283f7e82e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5e28bd00650f - core::fmt::rt::Argument::fmt::he65307037dca33c6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x5e28bd00650f - core::fmt::write::h24186904251c31cb
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x5e28bcfc4063 - std::io::default_write_fmt::h4e8d11c5c4b9cafe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5e28bcfc4063 - std::io::Write::write_fmt::ha849be0824d095ef
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x5e28bcfcfcd2 - std::sys::backtrace::BacktraceLock::print::he038489aba5894a6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x5e28bcfd47af - std::panicking::default_hook::{{closure}}::h80a26d916c49679b
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x5e28bcfd4641 - std::panicking::default_hook::he2e9efee79b3dce9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x5e28bcf9199e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h202f496763929329
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x5e28bcf9199e - test::test_main_with_exit_callback::{{closure}}::h805a6913adddaea3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5e28bcfd4dbf - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h2883c9d2dbd4e81c
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x5e28bcfd4dbf - std::panicking::panic_with_hook::hf5648b7cec6bc73e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x5e28bcfd4c1a - std::panicking::panic_handler::{{closure}}::h1b2ed3864ba94359
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x5e28bcfcfe09 - std::sys::backtrace::__rust_end_short_backtrace::hd0186b2b27f5aaa7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x5e28bcfb7f9d - __rustc[f7dae8b92efe1d7a]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x5e28bd00e0e0 - core::panicking::panic_fmt::hb5d6b83773432920
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x5e28bd00d516 - core::result::unwrap_failed::h427ee4a8bb06d8af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1862:5
[INFO] [stdout]   20:     0x5e28bcf6fdac - core::result::Result<T,E>::unwrap::he59af62271333e1a
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/result.rs:1233:23
[INFO] [stdout]   21:     0x5e28bcf6fdac - rugenere::write_to_file::ha7933fbe5cfee189
[INFO] [stdout]                                at /opt/rustwide/workdir/src/main.rs:68:41
[INFO] [stdout]   22:     0x5e28bcf70ee7 - rugenere::tests::test_output_file::ha8fa42643b37052c
[INFO] [stdout]                                at /opt/rustwide/workdir/src/main.rs:86:3
[INFO] [stdout]   23:     0x5e28bcf71087 - rugenere::tests::test_output_file::{{closure}}::h1a4c9f498949cb15
[INFO] [stdout]                                at /opt/rustwide/workdir/src/main.rs:84:23
[INFO] [stdout]   24:     0x5e28bcf6ea06 - core::ops::function::FnOnce::call_once::h7aa6a27bcf0a5ae3
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x5e28bcf9180b - core::ops::function::FnOnce::call_once::h3a2d82edd1a9b770
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   26:     0x5e28bcf9180b - test::__rust_begin_short_backtrace::h85d4fe5033219107
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:663:18
[INFO] [stdout]   27:     0x5e28bcfa57fd - test::run_test_in_process::{{closure}}::h67b48a81b9c9d7b6
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:74
[INFO] [stdout]   28:     0x5e28bcfa57fd - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h7680585480377cb5
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   29:     0x5e28bcfa57fd - std::panicking::catch_unwind::do_call::hf71351b2657d4002
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   30:     0x5e28bcfa57fd - std::panicking::catch_unwind::h7fcb5c0312d9e172
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   31:     0x5e28bcfa57fd - std::panic::catch_unwind::h5cf3c9bdee894ebe
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   32:     0x5e28bcfa57fd - test::run_test_in_process::h1469cb85193a3a25
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:686:27
[INFO] [stdout]   33:     0x5e28bcfa57fd - test::run_test::{{closure}}::h59d45b3cd6453d69
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:607:43
[INFO] [stdout]   34:     0x5e28bcf7ed44 - test::run_test::{{closure}}::h9baa0c3d443f28c9
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/test/src/lib.rs:637:41
[INFO] [stdout]   35:     0x5e28bcf7ed44 - std::sys::backtrace::__rust_begin_short_backtrace::h97ea8cee4828663e
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   36:     0x5e28bcf8259a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h5d7539d5f78cee61
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   37:     0x5e28bcf8259a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::he4c551e23c5e9b22
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   38:     0x5e28bcf8259a - std::panicking::catch_unwind::do_call::h522b41a6c157aaba
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:590:40
[INFO] [stdout]   39:     0x5e28bcf8259a - std::panicking::catch_unwind::h0efbf72006b8e365
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panicking.rs:553:19
[INFO] [stdout]   40:     0x5e28bcf8259a - std::panic::catch_unwind::h3b081041e6c97066
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/panic.rs:359:14
[INFO] [stdout]   41:     0x5e28bcf8259a - std::thread::Builder::spawn_unchecked_::{{closure}}::ha751309815d5d8cf
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   42:     0x5e28bcf8259a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2084b887a5fe25a7
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   43:     0x5e28bcfcb20f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3adbd6ccf5f737af
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   44:     0x5e28bcfcb20f - std::sys::thread::unix::Thread::new::thread_start::hb3dc6483caa1b987
[INFO] [stdout]                                at /rustc/c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   45:     0x7706a9561aa4 - <unknown>
[INFO] [stdout]   46:     0x7706a95eea64 - clone
[INFO] [stdout]   47:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     tests::test_output_file
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 5 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin rugenere`
[INFO] running `Command { std: "docker" "inspect" "0aac17800bec43d52894498b9ee86750760aa135c8e438a5f2911310e4a97f44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0aac17800bec43d52894498b9ee86750760aa135c8e438a5f2911310e4a97f44", kill_on_drop: false }`
[INFO] [stdout] 0aac17800bec43d52894498b9ee86750760aa135c8e438a5f2911310e4a97f44
