[INFO] cloning repository https://github.com/VoxWave/Compilers2018
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/VoxWave/Compilers2018" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVoxWave%2FCompilers2018", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVoxWave%2FCompilers2018'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ba4fcdaabdef34f3da20321a7a9e49d6556eb676
[INFO] testing VoxWave/Compilers2018 against 1.75.0 for beta-1.76-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVoxWave%2FCompilers2018" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/VoxWave/Compilers2018 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/VoxWave/Compilers2018
[INFO] finished tweaking git repo https://github.com/VoxWave/Compilers2018
[INFO] tweaked toml for git repo https://github.com/VoxWave/Compilers2018 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/VoxWave/Compilers2018 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded arrayvec v0.4.7
[INFO] [stderr]   Downloaded either v1.5.0
[INFO] [stderr]   Downloaded num-traits v0.2.0
[INFO] [stderr]   Downloaded num_cpus v1.8.0
[INFO] [stderr]   Downloaded cfg-if v0.1.2
[INFO] [stderr]   Downloaded nodrop v0.1.12
[INFO] [stderr]   Downloaded num-iter v0.1.35
[INFO] [stderr]   Downloaded lazy_static v1.0.0
[INFO] [stderr]   Downloaded num-integer v0.1.36
[INFO] [stderr]   Downloaded num-bigint v0.1.43
[INFO] [stderr]   Downloaded rayon v1.0.1
[INFO] [stderr]   Downloaded libc v0.2.36
[INFO] [stderr]   Downloaded rayon-core v1.4.0
[INFO] [stderr]   Downloaded char_stream v0.1.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 04354cf44c0c539919a96fd63619258fb4dca4f5a78e1da76fe35db068da139c
[INFO] running `Command { std: "docker" "start" "-a" "04354cf44c0c539919a96fd63619258fb4dca4f5a78e1da76fe35db068da139c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04354cf44c0c539919a96fd63619258fb4dca4f5a78e1da76fe35db068da139c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04354cf44c0c539919a96fd63619258fb4dca4f5a78e1da76fe35db068da139c", kill_on_drop: false }`
[INFO] [stdout] 04354cf44c0c539919a96fd63619258fb4dca4f5a78e1da76fe35db068da139c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 407d9853c2c654837fec2790a8a3ec63537340e05cf00e2cc6b165f2171acead
[INFO] running `Command { std: "docker" "start" "-a" "407d9853c2c654837fec2790a8a3ec63537340e05cf00e2cc6b165f2171acead", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.36
[INFO] [stderr]    Compiling num-traits v0.2.0
[INFO] [stderr]    Compiling cfg-if v0.1.2
[INFO] [stderr]    Compiling nodrop v0.1.12
[INFO] [stderr]    Compiling lazy_static v1.0.0
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling memoffset v0.2.1
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling char_stream v0.1.8
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling arrayvec v0.4.7
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling num-integer v0.1.36
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling num-iter v0.1.35
[INFO] [stderr]    Compiling num-bigint v0.1.43
[INFO] [stderr]    Compiling rayon v1.0.1
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling minipl-compiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::sync::mpsc::Sender`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::sync::mpsc::Sender;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::mpsc::Receiver`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::sync::mpsc::Receiver;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::abort`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::process::abort;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/scanner/mod.rs:170:24
[INFO] [stdout]     |
[INFO] [stdout] 170 |                     '0'...'9' => ScanMode::Number,
[INFO] [stdout]     |                        ^^^ help: use `..=` for an inclusive range
[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]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/scanner/mod.rs:213:20
[INFO] [stdout]     |
[INFO] [stdout] 213 |                 '0'...'8' | 'x' | 'U' | 'u' => {
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[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: `...` range patterns are deprecated
[INFO] [stdout]    --> src/scanner/mod.rs:229:24
[INFO] [stdout]     |
[INFO] [stdout] 229 |                     '0'...'9' | 'a'...'f' | 'A'...'F' => {
[INFO] [stdout]     |                        ^^^ help: use `..=` for an inclusive range
[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: `...` range patterns are deprecated
[INFO] [stdout]    --> src/scanner/mod.rs:229:36
[INFO] [stdout]     |
[INFO] [stdout] 229 |                     '0'...'9' | 'a'...'f' | 'A'...'F' => {
[INFO] [stdout]     |                                    ^^^ help: use `..=` for an inclusive range
[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: `...` range patterns are deprecated
[INFO] [stdout]    --> src/scanner/mod.rs:229:48
[INFO] [stdout]     |
[INFO] [stdout] 229 |                     '0'...'9' | 'a'...'f' | 'A'...'F' => {
[INFO] [stdout]     |                                                ^^^ help: use `..=` for an inclusive range
[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: `...` range patterns are deprecated
[INFO] [stdout]    --> src/scanner/mod.rs:248:20
[INFO] [stdout]     |
[INFO] [stdout] 248 |                 '0'...'7' => {
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[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: `...` range patterns are deprecated
[INFO] [stdout]    --> src/scanner/mod.rs:251:28
[INFO] [stdout]     |
[INFO] [stdout] 251 |                         '0'...'7' => self.escape_buffer.push(c),
[INFO] [stdout]     |                            ^^^ help: use `..=` for an inclusive range
[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: `...` range patterns are deprecated
[INFO] [stdout]    --> src/scanner/mod.rs:272:28
[INFO] [stdout]     |
[INFO] [stdout] 272 |                         '0'...'9' | 'a'...'f' | 'A'...'F' => self.escape_buffer.push(c),
[INFO] [stdout]     |                            ^^^ help: use `..=` for an inclusive range
[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: `...` range patterns are deprecated
[INFO] [stdout]    --> src/scanner/mod.rs:272:40
[INFO] [stdout]     |
[INFO] [stdout] 272 |                         '0'...'9' | 'a'...'f' | 'A'...'F' => self.escape_buffer.push(c),
[INFO] [stdout]     |                                        ^^^ help: use `..=` for an inclusive range
[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: `...` range patterns are deprecated
[INFO] [stdout]    --> src/scanner/mod.rs:272:52
[INFO] [stdout]     |
[INFO] [stdout] 272 |                         '0'...'9' | 'a'...'f' | 'A'...'F' => self.escape_buffer.push(c),
[INFO] [stdout]     |                                                    ^^^ help: use `..=` for an inclusive range
[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: `...` range patterns are deprecated
[INFO] [stdout]    --> src/scanner/mod.rs:303:16
[INFO] [stdout]     |
[INFO] [stdout] 303 |             '0'...'9' => self.buffer.push(c),
[INFO] [stdout]     |                ^^^ help: use `..=` for an inclusive range
[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 method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/file_handling.rs:28:68
[INFO] [stdout]    |
[INFO] [stdout] 28 |         Err(why) => panic!("couldn't open {}: {}", display, Error::description(&why)),
[INFO] [stdout]    |                                                                    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/file_handling.rs:37:68
[INFO] [stdout]    |
[INFO] [stdout] 37 |         Err(why) => panic!("couldn't read {}: {}", display, Error::description(&why)),
[INFO] [stdout]    |                                                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/parser/mod.rs:255:17
[INFO] [stdout]     |
[INFO] [stdout] 251 |                 _ => {
[INFO] [stdout]     |                 - matches any value
[INFO] [stdout] ...
[INFO] [stdout] 255 |                 _ => panic!("unexpected Token {:#?} read during", t),
[INFO] [stdout]     |                 ^ unreachable pattern
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/interpreter.rs:207:33
[INFO] [stdout]     |
[INFO] [stdout] 207 |                     Value::Bool(b) => panic!("boolean printing is not supported"),
[INFO] [stdout]     |                                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/interpreter.rs:171:47
[INFO] [stdout]     |
[INFO] [stdout] 171 |                 Statement::For(var, from, to, mut stmts) => {
[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/interpreter.rs:203:25
[INFO] [stdout]     |
[INFO] [stdout] 203 |                     let mut control_variable = self.context.get_mut(&var).unwrap();
[INFO] [stdout]     |                         ----^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:29:10
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let (mut kill_switch, mut kill_signal) = channel();
[INFO] [stdout]    |          ----^^^^^^^^^^^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:29:27
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let (mut kill_switch, mut kill_signal) = channel();
[INFO] [stdout]    |                           ----^^^^^^^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         kill_switch.send(true);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 41 |         let _ = kill_switch.send(true);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 |     kill_signal.recv();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let _ = kill_signal.recv();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]    --> src/parser/mod.rs:269:59
[INFO] [stdout]     |
[INFO] [stdout] 269 |                 _ => panic!("Expected keyword 'in', found {:#?}"),
[INFO] [stdout]     |                                                           ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]     |
[INFO] [stdout] 269 |                 _ => panic!("Expected keyword 'in', found {:#?}", ...),
[INFO] [stdout]     |                                                                 +++++
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 269 |                 _ => panic!("{}", "Expected keyword 'in', found {:#?}"),
[INFO] [stdout]     |                             +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]    --> src/parser/mod.rs:477:72
[INFO] [stdout]     |
[INFO] [stdout] 477 |                 _ => panic!("expression started with and invalid token {:#?}"),
[INFO] [stdout]     |                                                                        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]     |
[INFO] [stdout] 477 |                 _ => panic!("expression started with and invalid token {:#?}", ...),
[INFO] [stdout]     |                                                                              +++++
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 477 |                 _ => panic!("{}", "expression started with and invalid token {:#?}"),
[INFO] [stdout]     |                             +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]    --> src/parser/mod.rs:489:54
[INFO] [stdout]     |
[INFO] [stdout] 489 |         _ => panic!("expected an operand but found a {:#?} instead"),
[INFO] [stdout]     |                                                      ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]     |
[INFO] [stdout] 489 |         _ => panic!("expected an operand but found a {:#?} instead", ...),
[INFO] [stdout]     |                                                                    +++++
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 489 |         _ => panic!("{}", "expected an operand but found a {:#?} instead"),
[INFO] [stdout]     |                     +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]    --> src/parser/mod.rs:512:53
[INFO] [stdout]     |
[INFO] [stdout] 512 |         _ => panic!("expected an operator but found {:#?} instead"),
[INFO] [stdout]     |                                                     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]     |
[INFO] [stdout] 512 |         _ => panic!("expected an operator but found {:#?} instead", ...),
[INFO] [stdout]     |                                                                   +++++
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 512 |         _ => panic!("{}", "expected an operator but found {:#?} instead"),
[INFO] [stdout]     |                     +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]    --> src/parser/mod.rs:522:52
[INFO] [stdout]     |
[INFO] [stdout] 522 |                 _ => panic!("the first token was a {:#?} instead of an opening bracket"),
[INFO] [stdout]     |                                                    ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]     |
[INFO] [stdout] 522 |                 _ => panic!("the first token was a {:#?} instead of an opening bracket", ...),
[INFO] [stdout]     |                                                                                        +++++
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 522 |                 _ => panic!("{}", "the first token was a {:#?} instead of an opening bracket"),
[INFO] [stdout]     |                             +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]    --> src/interpreter.rs:131:34
[INFO] [stdout]     |
[INFO] [stdout] 131 |                     _ => panic!("{:#?} did not evaluate to a boolean"),
[INFO] [stdout]     |                                  ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]     |
[INFO] [stdout] 131 |                     _ => panic!("{:#?} did not evaluate to a boolean", ...),
[INFO] [stdout]     |                                                                      +++++
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 131 |                     _ => panic!("{}", "{:#?} did not evaluate to a boolean"),
[INFO] [stdout]     |                                 +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 30 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.86s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "407d9853c2c654837fec2790a8a3ec63537340e05cf00e2cc6b165f2171acead", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "407d9853c2c654837fec2790a8a3ec63537340e05cf00e2cc6b165f2171acead", kill_on_drop: false }`
[INFO] [stdout] 407d9853c2c654837fec2790a8a3ec63537340e05cf00e2cc6b165f2171acead
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b8668fe54a29e3e6d8b8108be1fe29a0debf41369f973fd9cf9952eec24f178a
[INFO] running `Command { std: "docker" "start" "-a" "b8668fe54a29e3e6d8b8108be1fe29a0debf41369f973fd9cf9952eec24f178a", kill_on_drop: false }`
[INFO] [stderr]    Compiling minipl-compiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::sync::mpsc::Sender`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::sync::mpsc::Sender;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::mpsc::Receiver`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::sync::mpsc::Receiver;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::abort`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::process::abort;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/scanner/mod.rs:170:24
[INFO] [stdout]     |
[INFO] [stdout] 170 |                     '0'...'9' => ScanMode::Number,
[INFO] [stdout]     |                        ^^^ help: use `..=` for an inclusive range
[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]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/scanner/mod.rs:213:20
[INFO] [stdout]     |
[INFO] [stdout] 213 |                 '0'...'8' | 'x' | 'U' | 'u' => {
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[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: `...` range patterns are deprecated
[INFO] [stdout]    --> src/scanner/mod.rs:229:24
[INFO] [stdout]     |
[INFO] [stdout] 229 |                     '0'...'9' | 'a'...'f' | 'A'...'F' => {
[INFO] [stdout]     |                        ^^^ help: use `..=` for an inclusive range
[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: `...` range patterns are deprecated
[INFO] [stdout]    --> src/scanner/mod.rs:229:36
[INFO] [stdout]     |
[INFO] [stdout] 229 |                     '0'...'9' | 'a'...'f' | 'A'...'F' => {
[INFO] [stdout]     |                                    ^^^ help: use `..=` for an inclusive range
[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: `...` range patterns are deprecated
[INFO] [stdout]    --> src/scanner/mod.rs:229:48
[INFO] [stdout]     |
[INFO] [stdout] 229 |                     '0'...'9' | 'a'...'f' | 'A'...'F' => {
[INFO] [stdout]     |                                                ^^^ help: use `..=` for an inclusive range
[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: `...` range patterns are deprecated
[INFO] [stdout]    --> src/scanner/mod.rs:248:20
[INFO] [stdout]     |
[INFO] [stdout] 248 |                 '0'...'7' => {
[INFO] [stdout]     |                    ^^^ help: use `..=` for an inclusive range
[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: `...` range patterns are deprecated
[INFO] [stdout]    --> src/scanner/mod.rs:251:28
[INFO] [stdout]     |
[INFO] [stdout] 251 |                         '0'...'7' => self.escape_buffer.push(c),
[INFO] [stdout]     |                            ^^^ help: use `..=` for an inclusive range
[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: `...` range patterns are deprecated
[INFO] [stdout]    --> src/scanner/mod.rs:272:28
[INFO] [stdout]     |
[INFO] [stdout] 272 |                         '0'...'9' | 'a'...'f' | 'A'...'F' => self.escape_buffer.push(c),
[INFO] [stdout]     |                            ^^^ help: use `..=` for an inclusive range
[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: `...` range patterns are deprecated
[INFO] [stdout]    --> src/scanner/mod.rs:272:40
[INFO] [stdout]     |
[INFO] [stdout] 272 |                         '0'...'9' | 'a'...'f' | 'A'...'F' => self.escape_buffer.push(c),
[INFO] [stdout]     |                                        ^^^ help: use `..=` for an inclusive range
[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: `...` range patterns are deprecated
[INFO] [stdout]    --> src/scanner/mod.rs:272:52
[INFO] [stdout]     |
[INFO] [stdout] 272 |                         '0'...'9' | 'a'...'f' | 'A'...'F' => self.escape_buffer.push(c),
[INFO] [stdout]     |                                                    ^^^ help: use `..=` for an inclusive range
[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: `...` range patterns are deprecated
[INFO] [stdout]    --> src/scanner/mod.rs:303:16
[INFO] [stdout]     |
[INFO] [stdout] 303 |             '0'...'9' => self.buffer.push(c),
[INFO] [stdout]     |                ^^^ help: use `..=` for an inclusive range
[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 method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/file_handling.rs:28:68
[INFO] [stdout]    |
[INFO] [stdout] 28 |         Err(why) => panic!("couldn't open {}: {}", display, Error::description(&why)),
[INFO] [stdout]    |                                                                    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/file_handling.rs:37:68
[INFO] [stdout]    |
[INFO] [stdout] 37 |         Err(why) => panic!("couldn't read {}: {}", display, Error::description(&why)),
[INFO] [stdout]    |                                                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser/test.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let mut expected: VecDeque<_> = vec![
[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: unreachable pattern
[INFO] [stdout]    --> src/parser/mod.rs:255:17
[INFO] [stdout]     |
[INFO] [stdout] 251 |                 _ => {
[INFO] [stdout]     |                 - matches any value
[INFO] [stdout] ...
[INFO] [stdout] 255 |                 _ => panic!("unexpected Token {:#?} read during", t),
[INFO] [stdout]     |                 ^ unreachable pattern
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/interpreter.rs:207:33
[INFO] [stdout]     |
[INFO] [stdout] 207 |                     Value::Bool(b) => panic!("boolean printing is not supported"),
[INFO] [stdout]     |                                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/interpreter.rs:171:47
[INFO] [stdout]     |
[INFO] [stdout] 171 |                 Statement::For(var, from, to, mut stmts) => {
[INFO] [stdout]     |                                               ----^^^^^
[INFO] [stdout]     |                                               |
[INFO] [stdout]     |                                               help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/interpreter.rs:203:25
[INFO] [stdout]     |
[INFO] [stdout] 203 |                     let mut control_variable = self.context.get_mut(&var).unwrap();
[INFO] [stdout]     |                         ----^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:29:10
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let (mut kill_switch, mut kill_signal) = channel();
[INFO] [stdout]    |          ----^^^^^^^^^^^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:29:27
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let (mut kill_switch, mut kill_signal) = channel();
[INFO] [stdout]    |                           ----^^^^^^^^^^^
[INFO] [stdout]    |                           |
[INFO] [stdout]    |                           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         kill_switch.send(true);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 41 |         let _ = kill_switch.send(true);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 |     kill_signal.recv();
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let _ = kill_signal.recv();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]    --> src/parser/mod.rs:269:59
[INFO] [stdout]     |
[INFO] [stdout] 269 |                 _ => panic!("Expected keyword 'in', found {:#?}"),
[INFO] [stdout]     |                                                           ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]     |
[INFO] [stdout] 269 |                 _ => panic!("Expected keyword 'in', found {:#?}", ...),
[INFO] [stdout]     |                                                                 +++++
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 269 |                 _ => panic!("{}", "Expected keyword 'in', found {:#?}"),
[INFO] [stdout]     |                             +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]    --> src/parser/mod.rs:477:72
[INFO] [stdout]     |
[INFO] [stdout] 477 |                 _ => panic!("expression started with and invalid token {:#?}"),
[INFO] [stdout]     |                                                                        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]     |
[INFO] [stdout] 477 |                 _ => panic!("expression started with and invalid token {:#?}", ...),
[INFO] [stdout]     |                                                                              +++++
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 477 |                 _ => panic!("{}", "expression started with and invalid token {:#?}"),
[INFO] [stdout]     |                             +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]    --> src/parser/mod.rs:489:54
[INFO] [stdout]     |
[INFO] [stdout] 489 |         _ => panic!("expected an operand but found a {:#?} instead"),
[INFO] [stdout]     |                                                      ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]     |
[INFO] [stdout] 489 |         _ => panic!("expected an operand but found a {:#?} instead", ...),
[INFO] [stdout]     |                                                                    +++++
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 489 |         _ => panic!("{}", "expected an operand but found a {:#?} instead"),
[INFO] [stdout]     |                     +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]    --> src/parser/mod.rs:512:53
[INFO] [stdout]     |
[INFO] [stdout] 512 |         _ => panic!("expected an operator but found {:#?} instead"),
[INFO] [stdout]     |                                                     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]     |
[INFO] [stdout] 512 |         _ => panic!("expected an operator but found {:#?} instead", ...),
[INFO] [stdout]     |                                                                   +++++
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 512 |         _ => panic!("{}", "expected an operator but found {:#?} instead"),
[INFO] [stdout]     |                     +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]    --> src/parser/mod.rs:522:52
[INFO] [stdout]     |
[INFO] [stdout] 522 |                 _ => panic!("the first token was a {:#?} instead of an opening bracket"),
[INFO] [stdout]     |                                                    ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]     |
[INFO] [stdout] 522 |                 _ => panic!("the first token was a {:#?} instead of an opening bracket", ...),
[INFO] [stdout]     |                                                                                        +++++
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 522 |                 _ => panic!("{}", "the first token was a {:#?} instead of an opening bracket"),
[INFO] [stdout]     |                             +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]    --> src/interpreter.rs:131:34
[INFO] [stdout]     |
[INFO] [stdout] 131 |                     _ => panic!("{:#?} did not evaluate to a boolean"),
[INFO] [stdout]     |                                  ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]     |
[INFO] [stdout] 131 |                     _ => panic!("{:#?} did not evaluate to a boolean", ...),
[INFO] [stdout]     |                                                                      +++++
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 131 |                     _ => panic!("{}", "{:#?} did not evaluate to a boolean"),
[INFO] [stdout]     |                                 +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 31 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.14s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "b8668fe54a29e3e6d8b8108be1fe29a0debf41369f973fd9cf9952eec24f178a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8668fe54a29e3e6d8b8108be1fe29a0debf41369f973fd9cf9952eec24f178a", kill_on_drop: false }`
[INFO] [stdout] b8668fe54a29e3e6d8b8108be1fe29a0debf41369f973fd9cf9952eec24f178a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 61624ff7f022c2a10445742b6c06eb006b0382a15d7e046f4ee2b6e8ef47dc41
[INFO] running `Command { std: "docker" "start" "-a" "61624ff7f022c2a10445742b6c06eb006b0382a15d7e046f4ee2b6e8ef47dc41", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::sync::mpsc::Sender`
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::sync::mpsc::Sender;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::mpsc::Receiver`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::sync::mpsc::Receiver;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::process::abort`
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::process::abort;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/scanner/mod.rs:170:24
[INFO] [stderr]     |
[INFO] [stderr] 170 |                     '0'...'9' => ScanMode::Number,
[INFO] [stderr]     |                        ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/scanner/mod.rs:213:20
[INFO] [stderr]     |
[INFO] [stderr] 213 |                 '0'...'8' | 'x' | 'U' | 'u' => {
[INFO] [stderr]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/scanner/mod.rs:229:24
[INFO] [stderr]     |
[INFO] [stderr] 229 |                     '0'...'9' | 'a'...'f' | 'A'...'F' => {
[INFO] [stderr]     |                        ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/scanner/mod.rs:229:36
[INFO] [stderr]     |
[INFO] [stderr] 229 |                     '0'...'9' | 'a'...'f' | 'A'...'F' => {
[INFO] [stderr]     |                                    ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/scanner/mod.rs:229:48
[INFO] [stderr]     |
[INFO] [stderr] 229 |                     '0'...'9' | 'a'...'f' | 'A'...'F' => {
[INFO] [stderr]     |                                                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/scanner/mod.rs:248:20
[INFO] [stderr]     |
[INFO] [stderr] 248 |                 '0'...'7' => {
[INFO] [stderr]     |                    ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/scanner/mod.rs:251:28
[INFO] [stderr]     |
[INFO] [stderr] 251 |                         '0'...'7' => self.escape_buffer.push(c),
[INFO] [stderr]     |                            ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/scanner/mod.rs:272:28
[INFO] [stderr]     |
[INFO] [stderr] 272 |                         '0'...'9' | 'a'...'f' | 'A'...'F' => self.escape_buffer.push(c),
[INFO] [stderr]     |                            ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/scanner/mod.rs:272:40
[INFO] [stderr]     |
[INFO] [stderr] 272 |                         '0'...'9' | 'a'...'f' | 'A'...'F' => self.escape_buffer.push(c),
[INFO] [stderr]     |                                        ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/scanner/mod.rs:272:52
[INFO] [stderr]     |
[INFO] [stderr] 272 |                         '0'...'9' | 'a'...'f' | 'A'...'F' => self.escape_buffer.push(c),
[INFO] [stderr]     |                                                    ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/scanner/mod.rs:303:16
[INFO] [stderr]     |
[INFO] [stderr] 303 |             '0'...'9' => self.buffer.push(c),
[INFO] [stderr]     |                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/file_handling.rs:28:68
[INFO] [stderr]    |
[INFO] [stderr] 28 |         Err(why) => panic!("couldn't open {}: {}", display, Error::description(&why)),
[INFO] [stderr]    |                                                                    ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/file_handling.rs:37:68
[INFO] [stderr]    |
[INFO] [stderr] 37 |         Err(why) => panic!("couldn't read {}: {}", display, Error::description(&why)),
[INFO] [stderr]    |                                                                    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/parser/test.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let mut expected: VecDeque<_> = vec![
[INFO] [stderr]    |         ----^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/parser/mod.rs:255:17
[INFO] [stderr]     |
[INFO] [stderr] 251 |                 _ => {
[INFO] [stderr]     |                 - matches any value
[INFO] [stderr] ...
[INFO] [stderr] 255 |                 _ => panic!("unexpected Token {:#?} read during", t),
[INFO] [stderr]     |                 ^ unreachable pattern
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/interpreter.rs:207:33
[INFO] [stderr]     |
[INFO] [stderr] 207 |                     Value::Bool(b) => panic!("boolean printing is not supported"),
[INFO] [stderr]     |                                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/interpreter.rs:171:47
[INFO] [stderr]     |
[INFO] [stderr] 171 |                 Statement::For(var, from, to, mut stmts) => {
[INFO] [stderr]     |                                               ----^^^^^
[INFO] [stderr]     |                                               |
[INFO] [stderr]     |                                               help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/interpreter.rs:203:25
[INFO] [stderr]     |
[INFO] [stderr] 203 |                     let mut control_variable = self.context.get_mut(&var).unwrap();
[INFO] [stderr]     |                         ----^^^^^^^^^^^^^^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:29:10
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let (mut kill_switch, mut kill_signal) = channel();
[INFO] [stderr]    |          ----^^^^^^^^^^^
[INFO] [stderr]    |          |
[INFO] [stderr]    |          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:29:27
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let (mut kill_switch, mut kill_signal) = channel();
[INFO] [stderr]    |                           ----^^^^^^^^^^^
[INFO] [stderr]    |                           |
[INFO] [stderr]    |                           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/main.rs:41:9
[INFO] [stderr]    |
[INFO] [stderr] 41 |         kill_switch.send(true);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 41 |         let _ = kill_switch.send(true);
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/main.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     kill_signal.recv();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 43 |     let _ = kill_signal.recv();
[INFO] [stderr]    |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: panic message contains an unused formatting placeholder
[INFO] [stderr]    --> src/parser/mod.rs:269:59
[INFO] [stderr]     |
[INFO] [stderr] 269 |                 _ => panic!("Expected keyword 'in', found {:#?}"),
[INFO] [stderr]     |                                                           ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stderr]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stderr] help: add the missing argument
[INFO] [stderr]     |
[INFO] [stderr] 269 |                 _ => panic!("Expected keyword 'in', found {:#?}", ...),
[INFO] [stderr]     |                                                                 +++++
[INFO] [stderr] help: or add a "{}" format string to use the message literally
[INFO] [stderr]     |
[INFO] [stderr] 269 |                 _ => panic!("{}", "Expected keyword 'in', found {:#?}"),
[INFO] [stderr]     |                             +++++
[INFO] [stderr] 
[INFO] [stderr] warning: panic message contains an unused formatting placeholder
[INFO] [stderr]    --> src/parser/mod.rs:477:72
[INFO] [stderr]     |
[INFO] [stderr] 477 |                 _ => panic!("expression started with and invalid token {:#?}"),
[INFO] [stderr]     |                                                                        ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stderr] help: add the missing argument
[INFO] [stderr]     |
[INFO] [stderr] 477 |                 _ => panic!("expression started with and invalid token {:#?}", ...),
[INFO] [stderr]     |                                                                              +++++
[INFO] [stderr] help: or add a "{}" format string to use the message literally
[INFO] [stderr]     |
[INFO] [stderr] 477 |                 _ => panic!("{}", "expression started with and invalid token {:#?}"),
[INFO] [stderr]     |                             +++++
[INFO] [stderr] 
[INFO] [stderr] warning: panic message contains an unused formatting placeholder
[INFO] [stderr]    --> src/parser/mod.rs:489:54
[INFO] [stderr]     |
[INFO] [stderr] 489 |         _ => panic!("expected an operand but found a {:#?} instead"),
[INFO] [stderr]     |                                                      ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stderr] help: add the missing argument
[INFO] [stderr]     |
[INFO] [stderr] 489 |         _ => panic!("expected an operand but found a {:#?} instead", ...),
[INFO] [stderr]     |                                                                    +++++
[INFO] [stderr] help: or add a "{}" format string to use the message literally
[INFO] [stderr]     |
[INFO] [stderr] 489 |         _ => panic!("{}", "expected an operand but found a {:#?} instead"),
[INFO] [stderr]     |                     +++++
[INFO] [stderr] 
[INFO] [stderr] warning: panic message contains an unused formatting placeholder
[INFO] [stderr]    --> src/parser/mod.rs:512:53
[INFO] [stderr]     |
[INFO] [stderr] 512 |         _ => panic!("expected an operator but found {:#?} instead"),
[INFO] [stderr]     |                                                     ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stderr] help: add the missing argument
[INFO] [stderr]     |
[INFO] [stderr] 512 |         _ => panic!("expected an operator but found {:#?} instead", ...),
[INFO] [stderr]     |                                                                   +++++
[INFO] [stderr] help: or add a "{}" format string to use the message literally
[INFO] [stderr]     |
[INFO] [stderr] 512 |         _ => panic!("{}", "expected an operator but found {:#?} instead"),
[INFO] [stderr]     |                     +++++
[INFO] [stderr] 
[INFO] [stderr] warning: panic message contains an unused formatting placeholder
[INFO] [stderr]    --> src/parser/mod.rs:522:52
[INFO] [stderr]     |
[INFO] [stderr] 522 |                 _ => panic!("the first token was a {:#?} instead of an opening bracket"),
[INFO] [stderr]     |                                                    ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stderr] help: add the missing argument
[INFO] [stderr]     |
[INFO] [stderr] 522 |                 _ => panic!("the first token was a {:#?} instead of an opening bracket", ...),
[INFO] [stderr]     |                                                                                        +++++
[INFO] [stderr] help: or add a "{}" format string to use the message literally
[INFO] [stderr]     |
[INFO] [stderr] 522 |                 _ => panic!("{}", "the first token was a {:#?} instead of an opening bracket"),
[INFO] [stderr]     |                             +++++
[INFO] [stderr] 
[INFO] [stderr] warning: panic message contains an unused formatting placeholder
[INFO] [stderr]    --> src/interpreter.rs:131:34
[INFO] [stderr]     |
[INFO] [stderr] 131 |                     _ => panic!("{:#?} did not evaluate to a boolean"),
[INFO] [stderr]     |                                  ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stderr] help: add the missing argument
[INFO] [stderr]     |
[INFO] [stderr] 131 |                     _ => panic!("{:#?} did not evaluate to a boolean", ...),
[INFO] [stderr]     |                                                                      +++++
[INFO] [stderr] help: or add a "{}" format string to use the message literally
[INFO] [stderr]     |
[INFO] [stderr] 131 |                     _ => panic!("{}", "{:#?} did not evaluate to a boolean"),
[INFO] [stderr]     |                                 +++++
[INFO] [stderr] 
[INFO] [stderr] warning: `minipl-compiler` (bin "minipl-compiler" test) generated 31 warnings (run `cargo fix --bin "minipl-compiler" --tests` to apply 26 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/minipl_compiler-c7d2dffbdd09790e)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test scanner::test::example_program_1 ... ok
[INFO] [stdout] test scanner::test::example_program_3 ... ok
[INFO] [stdout] test parser::test::example_program_2 ... ok
[INFO] [stdout] test scanner::test::example_program_2 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "61624ff7f022c2a10445742b6c06eb006b0382a15d7e046f4ee2b6e8ef47dc41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61624ff7f022c2a10445742b6c06eb006b0382a15d7e046f4ee2b6e8ef47dc41", kill_on_drop: false }`
[INFO] [stdout] 61624ff7f022c2a10445742b6c06eb006b0382a15d7e046f4ee2b6e8ef47dc41
[INFO] testing VoxWave/Compilers2018 against beta-2024-01-09 for beta-1.76-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVoxWave%2FCompilers2018" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/VoxWave/Compilers2018 on toolchain beta-2024-01-09
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-01-09" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/VoxWave/Compilers2018
[INFO] finished tweaking git repo https://github.com/VoxWave/Compilers2018
[INFO] tweaked toml for git repo https://github.com/VoxWave/Compilers2018 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/VoxWave/Compilers2018 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-01-09" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-01-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1b24d57beb22171c4202fa88868d2d07da30039e70cc478aba72a9a7d94e697b
[INFO] running `Command { std: "docker" "start" "-a" "1b24d57beb22171c4202fa88868d2d07da30039e70cc478aba72a9a7d94e697b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1b24d57beb22171c4202fa88868d2d07da30039e70cc478aba72a9a7d94e697b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b24d57beb22171c4202fa88868d2d07da30039e70cc478aba72a9a7d94e697b", kill_on_drop: false }`
[INFO] [stdout] 1b24d57beb22171c4202fa88868d2d07da30039e70cc478aba72a9a7d94e697b
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-01-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e585aa1ef4fa60b81a4cbfd9c12c85c451274b5b10de92efdaf32989dd20dfc
[INFO] running `Command { std: "docker" "start" "-a" "6e585aa1ef4fa60b81a4cbfd9c12c85c451274b5b10de92efdaf32989dd20dfc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.36
[INFO] [stderr]    Compiling num-traits v0.2.0
[INFO] [stderr]    Compiling cfg-if v0.1.2
[INFO] [stderr]    Compiling nodrop v0.1.12
[INFO] [stderr]    Compiling lazy_static v1.0.0
[INFO] [stderr]    Compiling memoffset v0.2.1
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling char_stream v0.1.8
[INFO] [stderr]    Compiling arrayvec v0.4.7
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stdout] error[E0310]: the parameter type `T` may not live long enough
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/rustc-serialize-0.3.24/src/serialize.rs:1155:5
[INFO] [stdout]      |
[INFO] [stdout] 1155 |     fn decode<D: Decoder>(d: &mut D) -> Result<Cow<'static, T>, D::Error> {
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |     |
[INFO] [stdout]      |     the parameter type `T` must be valid for the static lifetime...
[INFO] [stdout]      |     ...so that the type `T` will meet its required lifetime bounds...
[INFO] [stdout]      |
[INFO] [stdout] note: ...that is required by this bound
[INFO] [stdout]     --> /rustc/650745ceb2ae60e04f8cd7bfb671fc37239533e4/library/alloc/src/borrow.rs:180:30
[INFO] [stdout] help: consider adding an explicit lifetime bound
[INFO] [stdout]      |
[INFO] [stdout] 1151 | impl<'a, T: ?Sized + 'static> Decodable for Cow<'a, T>
[INFO] [stdout]      |                    +++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling num-integer v0.1.36
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling num-iter v0.1.35
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0310`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc-serialize` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "6e585aa1ef4fa60b81a4cbfd9c12c85c451274b5b10de92efdaf32989dd20dfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e585aa1ef4fa60b81a4cbfd9c12c85c451274b5b10de92efdaf32989dd20dfc", kill_on_drop: false }`
[INFO] [stdout] 6e585aa1ef4fa60b81a4cbfd9c12c85c451274b5b10de92efdaf32989dd20dfc
