[INFO] cloning repository https://github.com/tomvanwoow/betadog
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tomvanwoow/betadog" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomvanwoow%2Fbetadog", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomvanwoow%2Fbetadog'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 88adc3d45cf05ba17892d0e16432159567b9bf7f
[INFO] building tomvanwoow/betadog against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomvanwoow%2Fbetadog" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tomvanwoow/betadog 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 git repo https://github.com/tomvanwoow/betadog
[INFO] finished tweaking git repo https://github.com/tomvanwoow/betadog
[INFO] tweaked toml for git repo https://github.com/tomvanwoow/betadog written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/tomvanwoow/betadog 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] 62e62c8b935ada0bb9f7138e6376c3399f01eff260fb374b2f70aa8bfea7514c
[INFO] running `Command { std: "docker" "start" "-a" "62e62c8b935ada0bb9f7138e6376c3399f01eff260fb374b2f70aa8bfea7514c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "62e62c8b935ada0bb9f7138e6376c3399f01eff260fb374b2f70aa8bfea7514c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62e62c8b935ada0bb9f7138e6376c3399f01eff260fb374b2f70aa8bfea7514c", kill_on_drop: false }`
[INFO] [stdout] 62e62c8b935ada0bb9f7138e6376c3399f01eff260fb374b2f70aa8bfea7514c
[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] 4a87bce92e5844d62f6d3baa41e4318cd8153a9e12e7b3ad2ff347e43756bbca
[INFO] running `Command { std: "docker" "start" "-a" "4a87bce92e5844d62f6d3baa41e4318cd8153a9e12e7b3ad2ff347e43756bbca", kill_on_drop: false }`
[INFO] [stderr]    Compiling betadog-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Expr`
[INFO] [stdout]  --> src/betadog/eval.rs:1:26
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::expr::{Const, Expr};
[INFO] [stdout]   |                          ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `betadog::eval`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use betadog::eval;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `eval_rat` is never used
[INFO] [stdout]  --> src/betadog/eval.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn eval_rat(r: rat::Rat) -> Const {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_const` is never used
[INFO] [stdout]   --> src/betadog/eval.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn add_const(lhs: Const, rhs: Const) -> Const {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sub_const` is never used
[INFO] [stdout]   --> src/betadog/eval.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn sub_const(lhs: Const, rhs: Const) -> Const {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mul_const` is never used
[INFO] [stdout]   --> src/betadog/eval.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn mul_const(lhs: Const, rhs: Const) -> Const {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `div_const` is never used
[INFO] [stdout]   --> src/betadog/eval.rs:66:4
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn div_const(lhs: Const, rhs: Const) -> Const {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `negate_const` is never used
[INFO] [stdout]   --> src/betadog/eval.rs:70:4
[INFO] [stdout]    |
[INFO] [stdout] 70 | fn negate_const(expr: Const) -> Const {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reciprocal_const` is never used
[INFO] [stdout]   --> src/betadog/eval.rs:82:4
[INFO] [stdout]    |
[INFO] [stdout] 82 | fn reciprocal_const(expr: Const) -> Const {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mul_infinity_const` is never used
[INFO] [stdout]   --> src/betadog/eval.rs:97:4
[INFO] [stdout]    |
[INFO] [stdout] 97 | fn mul_infinity_const(expr: Const) -> Const {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Rat` and `NegInf` are never constructed
[INFO] [stdout]   --> src/betadog/expr.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | pub enum Const {
[INFO] [stdout]    |          ----- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 9  |     Rat(rat::Rat),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 10 |     Inf,
[INFO] [stdout] 11 |     NegInf,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Const` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple variants are never constructed
[INFO] [stdout]   --> src/betadog/expr.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub enum Func {
[INFO] [stdout]    |          ---- variants in this enum
[INFO] [stdout] 62 |     Sin,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 63 |     Cos,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 64 |     Tan,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 65 |
[INFO] [stdout] 66 |     ASin,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 67 |     ACos,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 68 |     ATan,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 69 |     
[INFO] [stdout] 70 |     Log,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 71 |     Sqrt,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 72 |     Cbrt,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 73 |     Root,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 74 |
[INFO] [stdout] 75 |     Func(String),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Func` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Call` is never constructed
[INFO] [stdout]    --> src/betadog/expr.rs:106:5
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub enum Expr {
[INFO] [stdout]     |          ---- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 106 |     Call(Func, Vec<Box<Expr>>),
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expr` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `Command { std: "docker" "inspect" "4a87bce92e5844d62f6d3baa41e4318cd8153a9e12e7b3ad2ff347e43756bbca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a87bce92e5844d62f6d3baa41e4318cd8153a9e12e7b3ad2ff347e43756bbca", kill_on_drop: false }`
[INFO] [stdout] 4a87bce92e5844d62f6d3baa41e4318cd8153a9e12e7b3ad2ff347e43756bbca
[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] b10c24e4e066de4363bd72dcfcd5ee7d94d4b0b4c63d8642a29c363f1770bdf1
[INFO] running `Command { std: "docker" "start" "-a" "b10c24e4e066de4363bd72dcfcd5ee7d94d4b0b4c63d8642a29c363f1770bdf1", kill_on_drop: false }`
[INFO] [stderr]    Compiling betadog-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Expr`
[INFO] [stdout]  --> src/betadog/eval.rs:1:26
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::expr::{Const, Expr};
[INFO] [stdout]   |                          ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::eval::*`
[INFO] [stdout]   --> src/betadog/mod.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     use super::eval::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `betadog::eval`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use betadog::eval;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `eval_rat` is never used
[INFO] [stdout]  --> src/betadog/eval.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn eval_rat(r: rat::Rat) -> Const {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_const` is never used
[INFO] [stdout]   --> src/betadog/eval.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn add_const(lhs: Const, rhs: Const) -> Const {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sub_const` is never used
[INFO] [stdout]   --> src/betadog/eval.rs:38:4
[INFO] [stdout]    |
[INFO] [stdout] 38 | fn sub_const(lhs: Const, rhs: Const) -> Const {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mul_const` is never used
[INFO] [stdout]   --> src/betadog/eval.rs:42:4
[INFO] [stdout]    |
[INFO] [stdout] 42 | fn mul_const(lhs: Const, rhs: Const) -> Const {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `div_const` is never used
[INFO] [stdout]   --> src/betadog/eval.rs:66:4
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn div_const(lhs: Const, rhs: Const) -> Const {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `negate_const` is never used
[INFO] [stdout]   --> src/betadog/eval.rs:70:4
[INFO] [stdout]    |
[INFO] [stdout] 70 | fn negate_const(expr: Const) -> Const {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reciprocal_const` is never used
[INFO] [stdout]   --> src/betadog/eval.rs:82:4
[INFO] [stdout]    |
[INFO] [stdout] 82 | fn reciprocal_const(expr: Const) -> Const {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mul_infinity_const` is never used
[INFO] [stdout]   --> src/betadog/eval.rs:97:4
[INFO] [stdout]    |
[INFO] [stdout] 97 | fn mul_infinity_const(expr: Const) -> Const {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Rat` and `NegInf` are never constructed
[INFO] [stdout]   --> src/betadog/expr.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | pub enum Const {
[INFO] [stdout]    |          ----- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 9  |     Rat(rat::Rat),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 10 |     Inf,
[INFO] [stdout] 11 |     NegInf,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Const` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple variants are never constructed
[INFO] [stdout]   --> src/betadog/expr.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub enum Func {
[INFO] [stdout]    |          ---- variants in this enum
[INFO] [stdout] 62 |     Sin,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 63 |     Cos,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 64 |     Tan,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 65 |
[INFO] [stdout] 66 |     ASin,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 67 |     ACos,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 68 |     ATan,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 69 |     
[INFO] [stdout] 70 |     Log,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 71 |     Sqrt,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 72 |     Cbrt,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 73 |     Root,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 74 |
[INFO] [stdout] 75 |     Func(String),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Func` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Call` is never constructed
[INFO] [stdout]    --> src/betadog/expr.rs:106:5
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub enum Expr {
[INFO] [stdout]     |          ---- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 106 |     Call(Func, Vec<Box<Expr>>),
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Expr` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "b10c24e4e066de4363bd72dcfcd5ee7d94d4b0b4c63d8642a29c363f1770bdf1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b10c24e4e066de4363bd72dcfcd5ee7d94d4b0b4c63d8642a29c363f1770bdf1", kill_on_drop: false }`
[INFO] [stdout] b10c24e4e066de4363bd72dcfcd5ee7d94d4b0b4c63d8642a29c363f1770bdf1