[INFO] cloning repository https://github.com/rustwasm/twiggy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rustwasm/twiggy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frustwasm%2Ftwiggy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frustwasm%2Ftwiggy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 945e6241bf7b6d918fba17082d0b12eae1c56349
[INFO] checking rustwasm/twiggy against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frustwasm%2Ftwiggy" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/rustwasm/twiggy
[INFO] finished tweaking git repo https://github.com/rustwasm/twiggy
[INFO] tweaked toml for git repo https://github.com/rustwasm/twiggy written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/rustwasm/twiggy on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/rustwasm/twiggy 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5767b0a6c1df05f339cc2d3db26b1311a42a4278eeb1bff8fc517956c20087da
[INFO] running `Command { std: "docker" "start" "-a" "5767b0a6c1df05f339cc2d3db26b1311a42a4278eeb1bff8fc517956c20087da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5767b0a6c1df05f339cc2d3db26b1311a42a4278eeb1bff8fc517956c20087da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5767b0a6c1df05f339cc2d3db26b1311a42a4278eeb1bff8fc517956c20087da", kill_on_drop: false }`
[INFO] [stdout] 5767b0a6c1df05f339cc2d3db26b1311a42a4278eeb1bff8fc517956c20087da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=forbid -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ffa69eb9b736d5511ac6082e35341a9f0678e4510aa2368631af31035fe13b7
[INFO] running `Command { std: "docker" "start" "-a" "8ffa69eb9b736d5511ac6082e35341a9f0678e4510aa2368631af31035fe13b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling cpp_demangle v0.3.5
[INFO] [stderr]    Compiling indexmap v1.8.2
[INFO] [stderr]    Compiling anyhow v1.0.70
[INFO] [stderr]     Checking fixedbitset v0.4.1
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]     Checking frozen v1.0.0
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]    Compiling syn v1.0.96
[INFO] [stderr]    Compiling bumpalo v3.10.0
[INFO] [stderr]     Checking wasmparser v0.80.2
[INFO] [stderr]     Checking petgraph v0.6.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]    Compiling semver v1.0.26
[INFO] [stderr]     Checking once_cell v1.21.3
[INFO] [stderr]     Checking twox-hash v1.6.3
[INFO] [stderr]     Checking miniz_oxide v0.5.3
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]    Compiling wasmparser v0.230.0
[INFO] [stderr]    Compiling object v0.36.7
[INFO] [stderr]     Checking flate2 v1.0.24
[INFO] [stderr]     Checking ruzstd v0.7.3
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking rustop v1.1.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.100
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling thiserror-impl v1.0.40
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]    Compiling twiggy-opt v0.8.0 (/opt/rustwide/workdir/opt)
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.100
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.100
[INFO] [stderr]     Checking wasm-bindgen v0.2.100
[INFO] [stderr]     Checking twiggy-ir v0.8.0 (/opt/rustwide/workdir/ir)
[INFO] [stderr]     Checking csv v1.2.2
[INFO] [stderr]     Checking hashbrown v0.15.3
[INFO] [stderr]     Checking toml v0.5.9
[INFO] [stdout] warning: field `roots` is never read
[INFO] [stdout]    --> ir/ir.rs:148:5
[INFO] [stdout]     |
[INFO] [stdout] 140 | pub struct Items {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 148 |     roots: Frozen<BTreeSet<Id>>,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Items` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> ir/ir.rs:162:17
[INFO] [stdout]     |
[INFO] [stdout] 162 |     pub fn iter(&self) -> Iter {
[INFO] [stdout]     |                 ^^^^^     ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 162 |     pub fn iter(&self) -> Iter<'_> {
[INFO] [stdout]     |                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> ir/ir.rs:169:22
[INFO] [stdout]     |
[INFO] [stdout] 169 |     pub fn neighbors(&self, id: Id) -> Neighbors {
[INFO] [stdout]     |                      ^^^^^             ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 169 |     pub fn neighbors(&self, id: Id) -> Neighbors<'_> {
[INFO] [stdout]     |                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> ir/ir.rs:179:25
[INFO] [stdout]     |
[INFO] [stdout] 179 |     pub fn predecessors(&self, id: Id) -> Predecessors {
[INFO] [stdout]     |                         ^^^^^             ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 179 |     pub fn predecessors(&self, id: Id) -> Predecessors<'_> {
[INFO] [stdout]     |                                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `roots` is never read
[INFO] [stdout]    --> ir/ir.rs:148:5
[INFO] [stdout]     |
[INFO] [stdout] 140 | pub struct Items {
[INFO] [stdout]     |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 148 |     roots: Frozen<BTreeSet<Id>>,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Items` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> ir/ir.rs:162:17
[INFO] [stdout]     |
[INFO] [stdout] 162 |     pub fn iter(&self) -> Iter {
[INFO] [stdout]     |                 ^^^^^     ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 162 |     pub fn iter(&self) -> Iter<'_> {
[INFO] [stdout]     |                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> ir/ir.rs:169:22
[INFO] [stdout]     |
[INFO] [stdout] 169 |     pub fn neighbors(&self, id: Id) -> Neighbors {
[INFO] [stdout]     |                      ^^^^^             ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 169 |     pub fn neighbors(&self, id: Id) -> Neighbors<'_> {
[INFO] [stdout]     |                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> ir/ir.rs:179:25
[INFO] [stdout]     |
[INFO] [stdout] 179 |     pub fn predecessors(&self, id: Id) -> Predecessors {
[INFO] [stdout]     |                         ^^^^^             ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 179 |     pub fn predecessors(&self, id: Id) -> Predecessors<'_> {
[INFO] [stdout]     |                                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking twiggy-traits v0.8.0 (/opt/rustwide/workdir/traits)
[INFO] [stderr]     Checking indexmap v2.9.0
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/twiggy-opt-3a4e6e33708bbabf/out/cli.rs:163:5
[INFO] [stdout]     |
[INFO] [stdout] 163 | /     /// The name of the function whose dominator subtree should be printed.
[INFO] [stdout] 164 | |     items: Vec<String>,
[INFO] [stdout]     | |______________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/twiggy-opt-3a4e6e33708bbabf/out/cli.rs:251:5
[INFO] [stdout]     |
[INFO] [stdout] 251 | /     /// The functions to find call paths to.
[INFO] [stdout] 252 | |     functions: Vec<String>,
[INFO] [stdout]     | |__________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/twiggy-opt-3a4e6e33708bbabf/out/cli.rs:364:5
[INFO] [stdout]     |
[INFO] [stdout] 364 | /     /// The names of the generic functions whose monomorphizations
[INFO] [stdout] 365 | |     /// should be printed.
[INFO] [stdout] 366 | |     functions: Vec<String>,
[INFO] [stdout]     | |__________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/twiggy-opt-3a4e6e33708bbabf/out/cli.rs:545:5
[INFO] [stdout]     |
[INFO] [stdout] 545 | /     /// The name of the item(s) whose diff should be printed.
[INFO] [stdout] 546 | |     items: Vec<String>,
[INFO] [stdout]     | |______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/twiggy-opt-3a4e6e33708bbabf/out/cli.rs:163:5
[INFO] [stdout]     |
[INFO] [stdout] 163 | /     /// The name of the function whose dominator subtree should be printed.
[INFO] [stdout] 164 | |     items: Vec<String>,
[INFO] [stdout]     | |______________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/twiggy-opt-3a4e6e33708bbabf/out/cli.rs:251:5
[INFO] [stdout]     |
[INFO] [stdout] 251 | /     /// The functions to find call paths to.
[INFO] [stdout] 252 | |     functions: Vec<String>,
[INFO] [stdout]     | |__________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/twiggy-opt-3a4e6e33708bbabf/out/cli.rs:364:5
[INFO] [stdout]     |
[INFO] [stdout] 364 | /     /// The names of the generic functions whose monomorphizations
[INFO] [stdout] 365 | |     /// should be printed.
[INFO] [stdout] 366 | |     functions: Vec<String>,
[INFO] [stdout]     | |__________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/twiggy-opt-3a4e6e33708bbabf/out/cli.rs:545:5
[INFO] [stdout]     |
[INFO] [stdout] 545 | /     /// The name of the item(s) whose diff should be printed.
[INFO] [stdout] 546 | |     items: Vec<String>,
[INFO] [stdout]     | |______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `twiggy-opt` (lib test) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `twiggy-opt` (lib) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "8ffa69eb9b736d5511ac6082e35341a9f0678e4510aa2368631af31035fe13b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ffa69eb9b736d5511ac6082e35341a9f0678e4510aa2368631af31035fe13b7", kill_on_drop: false }`
[INFO] [stdout] 8ffa69eb9b736d5511ac6082e35341a9f0678e4510aa2368631af31035fe13b7
