[INFO] fetching crate aeon 0.3.1...
[INFO] building aeon-0.3.1 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] extracting crate aeon 0.3.1 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate aeon 0.3.1 on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate aeon 0.3.1
[INFO] finished tweaking crates.io crate aeon 0.3.1
[INFO] tweaked toml for crates.io crate aeon 0.3.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 06e8fd89a461f23352210d4c6992e691dde17cfedac26ce45ef0450a1babf572
[INFO] running `Command { std: "docker" "start" "-a" "06e8fd89a461f23352210d4c6992e691dde17cfedac26ce45ef0450a1babf572", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "06e8fd89a461f23352210d4c6992e691dde17cfedac26ce45ef0450a1babf572", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06e8fd89a461f23352210d4c6992e691dde17cfedac26ce45ef0450a1babf572", kill_on_drop: false }`
[INFO] [stdout] 06e8fd89a461f23352210d4c6992e691dde17cfedac26ce45ef0450a1babf572
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8f131b4d0e7f86775e3ad9cbcd1b6faf9605da961ac55d84b2059d0f97c381a0
[INFO] running `Command { std: "docker" "start" "-a" "8f131b4d0e7f86775e3ad9cbcd1b6faf9605da961ac55d84b2059d0f97c381a0", kill_on_drop: false }`
[INFO] [stderr]    Compiling aeon v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "8f131b4d0e7f86775e3ad9cbcd1b6faf9605da961ac55d84b2059d0f97c381a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f131b4d0e7f86775e3ad9cbcd1b6faf9605da961ac55d84b2059d0f97c381a0", kill_on_drop: false }`
[INFO] [stdout] 8f131b4d0e7f86775e3ad9cbcd1b6faf9605da961ac55d84b2059d0f97c381a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b24fc59d6f65c33cc32f54cd7fc3a828f5e09a8c74eb45c0e3ca0c5fecd3c255
[INFO] running `Command { std: "docker" "start" "-a" "b24fc59d6f65c33cc32f54cd7fc3a828f5e09a8c74eb45c0e3ca0c5fecd3c255", kill_on_drop: false }`
[INFO] [stderr]    Compiling aeon v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lexer.rs:250:58
[INFO] [stdout]     |
[INFO] [stdout] 250 |         assert!(matches!(current, Token::Identifier(_)), msg!("ident hello"));
[INFO] [stdout]     |                                                          ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `assert!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 250 |         assert!(matches!(current, Token::Identifier(_)), "{}", msg!("ident hello"));
[INFO] [stdout]     |                                                          +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lexer.rs:252:50
[INFO] [stdout]     |
[INFO] [stdout] 252 |         assert!(matches!(current, Token::Colon), msg!("colon"));
[INFO] [stdout]     |                                                  ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `assert!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 252 |         assert!(matches!(current, Token::Colon), "{}", msg!("colon"));
[INFO] [stdout]     |                                                  +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lexer.rs:255:50
[INFO] [stdout]     |
[INFO] [stdout] 255 |             matches!(current, Token::String(_)), msg!("string \"world\""));
[INFO] [stdout]     |                                                  ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `assert!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 255 |             matches!(current, Token::String(_)), "{}", msg!("string \"world\""));
[INFO] [stdout]     |                                                  +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lexer.rs:258:54
[INFO] [stdout]     |
[INFO] [stdout] 258 |             matches!(current, Token::Identifier(_)), msg!("ident world"));
[INFO] [stdout]     |                                                      ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `assert!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 258 |             matches!(current, Token::Identifier(_)), "{}", msg!("ident world"));
[INFO] [stdout]     |                                                      +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lexer.rs:261:46
[INFO] [stdout]     |
[INFO] [stdout] 261 |             matches!(current, Token::Colon), msg!("colon"));
[INFO] [stdout]     |                                              ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `assert!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 261 |             matches!(current, Token::Colon), "{}", msg!("colon"));
[INFO] [stdout]     |                                              +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lexer.rs:264:51
[INFO] [stdout]     |
[INFO] [stdout] 264 |             matches!(current, Token::Integer(_)), msg!("integer 1236"));
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `assert!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 264 |             matches!(current, Token::Integer(_)), "{}", msg!("integer 1236"));
[INFO] [stdout]     |                                                   +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "b24fc59d6f65c33cc32f54cd7fc3a828f5e09a8c74eb45c0e3ca0c5fecd3c255", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b24fc59d6f65c33cc32f54cd7fc3a828f5e09a8c74eb45c0e3ca0c5fecd3c255", kill_on_drop: false }`
[INFO] [stdout] b24fc59d6f65c33cc32f54cd7fc3a828f5e09a8c74eb45c0e3ca0c5fecd3c255