[INFO] fetching crate sjfl 0.4.0...
[INFO] building sjfl-0.4.0 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] extracting crate sjfl 0.4.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate sjfl 0.4.0 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 sjfl 0.4.0
[INFO] finished tweaking crates.io crate sjfl 0.4.0
[INFO] tweaked toml for crates.io crate sjfl 0.4.0 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] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hmath v0.1.17
[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] 40a97b1407b8142f9c70303320b908a986a286cf0e772953f1539797aa4fec05
[INFO] running `Command { std: "docker" "start" "-a" "40a97b1407b8142f9c70303320b908a986a286cf0e772953f1539797aa4fec05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40a97b1407b8142f9c70303320b908a986a286cf0e772953f1539797aa4fec05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40a97b1407b8142f9c70303320b908a986a286cf0e772953f1539797aa4fec05", kill_on_drop: false }`
[INFO] [stdout] 40a97b1407b8142f9c70303320b908a986a286cf0e772953f1539797aa4fec05
[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] dfd54bb9f3b81c913f57d438569f6ba62b24173b4d7745bf104c66a6b7aa2687
[INFO] running `Command { std: "docker" "start" "-a" "dfd54bb9f3b81c913f57d438569f6ba62b24173b4d7745bf104c66a6b7aa2687", kill_on_drop: false }`
[INFO] [stderr]    Compiling hmath v0.1.17
[INFO] [stderr]    Compiling sjfl v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]   --> src/session.rs:70:32
[INFO] [stdout]    |
[INFO] [stdout] 70 | ...                   if let Ok(path) = PathBuf::from_str(file) {
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]    = help: consider replacing the `if let` with a `let`
[INFO] [stdout]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file_name`
[INFO] [stdout]    --> src/lib.rs:185:21
[INFO] [stdout]     |
[INFO] [stdout] 185 | pub fn execute_file(file_name: &str, session: &mut Session) -> Result<(), (SJFLError, String)> {
[INFO] [stdout]     |                     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_name`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `session`
[INFO] [stdout]    --> src/lib.rs:185:38
[INFO] [stdout]     |
[INFO] [stdout] 185 | pub fn execute_file(file_name: &str, session: &mut Session) -> Result<(), (SJFLError, String)> {
[INFO] [stdout]     |                                      ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_session`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `META_CONST_NUM_BEGIN` is never used
[INFO] [stdout]   --> src/bsjfl.rs:46:11
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub const META_CONST_NUM_BEGIN: u8 = 3;
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `META_STRING_GET` is never used
[INFO] [stdout]   --> src/bsjfl.rs:63:11
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub const META_STRING_GET: u8 = 208;
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `META_STRING_SET` is never used
[INFO] [stdout]   --> src/bsjfl.rs:64:11
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub const META_STRING_SET: u8 = 209;
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `Command { std: "docker" "inspect" "dfd54bb9f3b81c913f57d438569f6ba62b24173b4d7745bf104c66a6b7aa2687", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfd54bb9f3b81c913f57d438569f6ba62b24173b4d7745bf104c66a6b7aa2687", kill_on_drop: false }`
[INFO] [stdout] dfd54bb9f3b81c913f57d438569f6ba62b24173b4d7745bf104c66a6b7aa2687
[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] f7134bd6ed32518a4b45f46a42ed95e54846530e9b35c5cc8598694e35b39dbf
[INFO] running `Command { std: "docker" "start" "-a" "f7134bd6ed32518a4b45f46a42ed95e54846530e9b35c5cc8598694e35b39dbf", kill_on_drop: false }`
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]   --> src/session.rs:70:32
[INFO] [stdout]    |
[INFO] [stdout] 70 | ...                   if let Ok(path) = PathBuf::from_str(file) {
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]    = help: consider replacing the `if let` with a `let`
[INFO] [stdout]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling sjfl v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `file_name`
[INFO] [stdout]    --> src/lib.rs:185:21
[INFO] [stdout]     |
[INFO] [stdout] 185 | pub fn execute_file(file_name: &str, session: &mut Session) -> Result<(), (SJFLError, String)> {
[INFO] [stdout]     |                     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_name`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `session`
[INFO] [stdout]    --> src/lib.rs:185:38
[INFO] [stdout]     |
[INFO] [stdout] 185 | pub fn execute_file(file_name: &str, session: &mut Session) -> Result<(), (SJFLError, String)> {
[INFO] [stdout]     |                                      ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_session`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `META_CONST_NUM_BEGIN` is never used
[INFO] [stdout]   --> src/bsjfl.rs:46:11
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub const META_CONST_NUM_BEGIN: u8 = 3;
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `META_STRING_GET` is never used
[INFO] [stdout]   --> src/bsjfl.rs:63:11
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub const META_STRING_GET: u8 = 208;
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `META_STRING_SET` is never used
[INFO] [stdout]   --> src/bsjfl.rs:64:11
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub const META_STRING_SET: u8 = 209;
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]   --> src/session.rs:70:32
[INFO] [stdout]    |
[INFO] [stdout] 70 | ...                   if let Ok(path) = PathBuf::from_str(file) {
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]    = help: consider replacing the `if let` with a `let`
[INFO] [stdout]    = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file_name`
[INFO] [stdout]    --> src/lib.rs:185:21
[INFO] [stdout]     |
[INFO] [stdout] 185 | pub fn execute_file(file_name: &str, session: &mut Session) -> Result<(), (SJFLError, String)> {
[INFO] [stdout]     |                     ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_name`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `session`
[INFO] [stdout]    --> src/lib.rs:185:38
[INFO] [stdout]     |
[INFO] [stdout] 185 | pub fn execute_file(file_name: &str, session: &mut Session) -> Result<(), (SJFLError, String)> {
[INFO] [stdout]     |                                      ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_session`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `META_CONST_NUM_BEGIN` is never used
[INFO] [stdout]   --> src/bsjfl.rs:46:11
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub const META_CONST_NUM_BEGIN: u8 = 3;
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `META_STRING_GET` is never used
[INFO] [stdout]   --> src/bsjfl.rs:63:11
[INFO] [stdout]    |
[INFO] [stdout] 63 | pub const META_STRING_GET: u8 = 208;
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `META_STRING_SET` is never used
[INFO] [stdout]   --> src/bsjfl.rs:64:11
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub const META_STRING_SET: u8 = 209;
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "f7134bd6ed32518a4b45f46a42ed95e54846530e9b35c5cc8598694e35b39dbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7134bd6ed32518a4b45f46a42ed95e54846530e9b35c5cc8598694e35b39dbf", kill_on_drop: false }`
[INFO] [stdout] f7134bd6ed32518a4b45f46a42ed95e54846530e9b35c5cc8598694e35b39dbf