[INFO] cloning repository https://github.com/obs145628/strength-reduction
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/obs145628/strength-reduction" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fobs145628%2Fstrength-reduction", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fobs145628%2Fstrength-reduction'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 009d943f1f3417ebc12c8fadb2b272a1a2fc8a3e
[INFO] checking obs145628/strength-reduction against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fobs145628%2Fstrength-reduction" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/obs145628/strength-reduction on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/obs145628/strength-reduction
[INFO] finished tweaking git repo https://github.com/obs145628/strength-reduction
[INFO] tweaked toml for git repo https://github.com/obs145628/strength-reduction written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/obs145628/strength-reduction already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9e553c8e82d82d882045575aa1c0c56b9e9f75e5a22c75a64cea37ffdc7bece9
[INFO] running `Command { std: "docker" "start" "-a" "9e553c8e82d82d882045575aa1c0c56b9e9f75e5a22c75a64cea37ffdc7bece9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9e553c8e82d82d882045575aa1c0c56b9e9f75e5a22c75a64cea37ffdc7bece9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e553c8e82d82d882045575aa1c0c56b9e9f75e5a22c75a64cea37ffdc7bece9", kill_on_drop: false }`
[INFO] [stdout] 9e553c8e82d82d882045575aa1c0c56b9e9f75e5a22c75a64cea37ffdc7bece9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 78b969ccd762b452b41d870d653a529c8c2c748365a9bd792818195aaf68a589
[INFO] running `Command { std: "docker" "start" "-a" "78b969ccd762b452b41d870d653a529c8c2c748365a9bd792818195aaf68a589", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking strength-reduction v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/loader.rs (1 fix)
[INFO] [stderr]        Fixed src/instruction.rs (1 fix)
[INFO] [stderr]        Fixed src/argument.rs (1 fix)
[INFO] [stderr]        Fixed src/constant.rs (1 fix)
[INFO] [stderr]        Fixed src/digraph.rs (1 fix)
[INFO] [stderr]        Fixed src/isa.rs (1 fix)
[INFO] [stderr]        Fixed src/digraph_order.rs (1 fix)
[INFO] [stderr]        Fixed src/basicblock.rs (1 fix)
[INFO] [stderr]        Fixed src/function.rs (1 fix)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `checker`
[INFO] [stdout]    --> src/loader.rs:308:9
[INFO] [stdout]     |
[INFO] [stdout] 308 |         checker::check_code(&ctx);
[INFO] [stdout]     |         ^^^^^^^ use of undeclared crate or module `checker`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `strength-reduction` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr]        Fixed src/loader.rs (1 fix)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/loader.rs:286:9
[INFO] [stdout]     |
[INFO] [stdout] 286 |         _ => unreachable!(),
[INFO] [stdout]     |         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `arg_pos`
[INFO] [stdout]  --> src/argument.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     arg_pos: usize,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `fun`
[INFO] [stdout]  --> src/argument.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fun: FunctionRef,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `arg_pos`
[INFO] [stdout]   --> src/argument.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn arg_pos(&self) -> usize {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `fun`
[INFO] [stdout]   --> src/argument.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn fun(&self) -> FunctionRef {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ins_mut`
[INFO] [stdout]   --> src/basicblock.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn ins_mut(&mut self) -> &mut [InstructionRef] {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_begin`
[INFO] [stdout]   --> src/basicblock.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn insert_begin(&mut self, ins: InstructionRef) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_before`
[INFO] [stdout]   --> src/basicblock.rs:55:12
[INFO] [stdout]    |
[INFO] [stdout] 55 |     pub fn insert_before(&mut self, new_ins: InstructionRef, pos: InstructionRef) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_after`
[INFO] [stdout]   --> src/basicblock.rs:59:12
[INFO] [stdout]    |
[INFO] [stdout] 59 |     pub fn insert_after(&mut self, new_ins: InstructionRef, pos: InstructionRef) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `erase`
[INFO] [stdout]   --> src/basicblock.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn erase(&mut self, ins: InstructionRef) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ins_idx`
[INFO] [stdout]   --> src/basicblock.rs:68:8
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fn ins_idx(&self, ins: InstructionRef) -> Option<usize> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_data_constant_mut`
[INFO] [stdout]    --> src/context.rs:160:12
[INFO] [stdout]     |
[INFO] [stdout] 160 |     pub fn get_data_constant_mut(&mut self, r: ConstantRef) -> Option<&mut Constant> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `erase_ins`
[INFO] [stdout]    --> src/context.rs:195:12
[INFO] [stdout]     |
[INFO] [stdout] 195 |     pub fn erase_ins(&mut self, ins: InstructionRef) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ins_detach`
[INFO] [stdout]    --> src/context.rs:221:12
[INFO] [stdout]     |
[INFO] [stdout] 221 |     pub fn ins_detach(&mut self, ins: InstructionRef) {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ins_insert_before`
[INFO] [stdout]    --> src/context.rs:243:12
[INFO] [stdout]     |
[INFO] [stdout] 243 |     pub fn ins_insert_before(&mut self, ins: InstructionRef, pos: InstructionRef) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ins_insert_after`
[INFO] [stdout]    --> src/context.rs:254:12
[INFO] [stdout]     |
[INFO] [stdout] 254 |     pub fn ins_insert_after(&mut self, ins: InstructionRef, pos: InstructionRef) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `erase_bb`
[INFO] [stdout]    --> src/context.rs:274:12
[INFO] [stdout]     |
[INFO] [stdout] 274 |     pub fn erase_bb(&mut self, bb: BasicBlockRef) {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `bb_detach`
[INFO] [stdout]    --> src/context.rs:279:12
[INFO] [stdout]     |
[INFO] [stdout] 279 |     pub fn bb_detach(&mut self, bb: BasicBlockRef) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `bb_insert_before`
[INFO] [stdout]    --> src/context.rs:301:12
[INFO] [stdout]     |
[INFO] [stdout] 301 |     pub fn bb_insert_before(&mut self, bb: BasicBlockRef, pos: BasicBlockRef) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `bb_insert_after`
[INFO] [stdout]    --> src/context.rs:312:12
[INFO] [stdout]     |
[INFO] [stdout] 312 |     pub fn bb_insert_after(&mut self, bb: BasicBlockRef, pos: BasicBlockRef) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `erase_arg`
[INFO] [stdout]    --> src/context.rs:332:8
[INFO] [stdout]     |
[INFO] [stdout] 332 |     fn erase_arg(&mut self, arg: ArgumentRef) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `erase_fun`
[INFO] [stdout]    --> src/context.rs:351:12
[INFO] [stdout]     |
[INFO] [stdout] 351 |     pub fn erase_fun(&mut self, fun: FunctionRef) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `fun_get_arg_mut`
[INFO] [stdout]    --> src/context.rs:356:12
[INFO] [stdout]     |
[INFO] [stdout] 356 |     pub fn fun_get_arg_mut(&mut self, fun: FunctionRef, idx: usize) -> &mut Argument {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `erase_const`
[INFO] [stdout]    --> src/context.rs:377:12
[INFO] [stdout]     |
[INFO] [stdout] 377 |     pub fn erase_const(&mut self, c: ConstantRef) {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `e`
[INFO] [stdout]   --> src/digraph.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn e(&self) -> usize {
[INFO] [stdout]    |            ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `del_edge`
[INFO] [stdout]   --> src/digraph.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn del_edge(&mut self, u: usize, v: usize) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `fun`
[INFO] [stdout]  --> src/dom_tree.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fun: FunctionRef,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `idom`
[INFO] [stdout]   --> src/dom_tree.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn idom(&self, bb: BasicBlockRef) -> BasicBlockRef {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dom`
[INFO] [stdout]   --> src/dom_tree.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn dom(&self, bb: BasicBlockRef) -> Vec<BasicBlockRef> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `bbs_mut`
[INFO] [stdout]   --> src/function.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn bbs_mut(&mut self) -> &mut [BasicBlockRef] {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_begin`
[INFO] [stdout]   --> src/function.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn insert_begin(&mut self, bb: BasicBlockRef) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_before`
[INFO] [stdout]   --> src/function.rs:61:12
[INFO] [stdout]    |
[INFO] [stdout] 61 |     pub fn insert_before(&mut self, new_bb: BasicBlockRef, pos: BasicBlockRef) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `insert_after`
[INFO] [stdout]   --> src/function.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub fn insert_after(&mut self, new_bb: BasicBlockRef, pos: BasicBlockRef) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `erase`
[INFO] [stdout]   --> src/function.rs:71:12
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn erase(&mut self, bb: BasicBlockRef) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `bb_idx`
[INFO] [stdout]   --> src/function.rs:76:8
[INFO] [stdout]    |
[INFO] [stdout] 76 |     fn bb_idx(&self, bb: BasicBlockRef) -> Option<usize> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `name`
[INFO] [stdout]   --> src/isa.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn name(&self) -> &'static str {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `users`
[INFO] [stdout]   --> src/value.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn users(&self) -> &[ValueRef] {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `users_mut`
[INFO] [stdout]   --> src/value.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn users_mut(&mut self) -> &mut [ValueRef] {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_op`
[INFO] [stdout]   --> src/value.rs:69:12
[INFO] [stdout]    |
[INFO] [stdout] 69 |     pub fn set_op(&mut self, ctx: &mut Context, idx: usize, val: ValueRef) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `own_mut`
[INFO] [stdout]    --> src/valueref.rs:230:12
[INFO] [stdout]     |
[INFO] [stdout] 230 |     pub fn own_mut<'a>(&self, ctx: &'a mut Context) -> Option<&'a mut Constant> {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 40 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] [stderr] error: failed to migrate to next edition
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `cargo fix --edition --allow-no-vcs --allow-dirty --frozen --all --all-targets --message-format=json` (exit status: 101)
[INFO] running `Command { std: "docker" "inspect" "78b969ccd762b452b41d870d653a529c8c2c748365a9bd792818195aaf68a589", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78b969ccd762b452b41d870d653a529c8c2c748365a9bd792818195aaf68a589", kill_on_drop: false }`
[INFO] [stdout] 78b969ccd762b452b41d870d653a529c8c2c748365a9bd792818195aaf68a589