[INFO] fetching crate zdd 0.3.0...
[INFO] testing zdd-0.3.0 against 1.93.0 for beta-1.94-1
[INFO] extracting crate zdd 0.3.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate zdd 0.3.0
[INFO] finished tweaking crates.io crate zdd 0.3.0
[INFO] tweaked toml for crates.io crate zdd 0.3.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate zdd 0.3.0 on toolchain 1.93.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.93.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.93.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 17 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.7.3 (available: v0.9.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.93.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hashconsing v1.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+1.93.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d782727737e6f4e3670a091faa3ed86fcb81423cf35d948d4021eb524cb77656
[INFO] running `Command { std: "docker" "start" "-a" "d782727737e6f4e3670a091faa3ed86fcb81423cf35d948d4021eb524cb77656", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d782727737e6f4e3670a091faa3ed86fcb81423cf35d948d4021eb524cb77656", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d782727737e6f4e3670a091faa3ed86fcb81423cf35d948d4021eb524cb77656", kill_on_drop: false }`
[INFO] [stdout] d782727737e6f4e3670a091faa3ed86fcb81423cf35d948d4021eb524cb77656
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+1.93.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aef6b25f98cb44142d3aab801f1aeae76996d196ce2bbc86b57b933ac065448c
[INFO] running `Command { std: "docker" "start" "-a" "aef6b25f98cb44142d3aab801f1aeae76996d196ce2bbc86b57b933ac065448c", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling hashconsing v1.6.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling zdd v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:67:1
[INFO] [stdout]    |
[INFO] [stdout] 67 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/wrapped.rs:187:53
[INFO] [stdout]     |
[INFO] [stdout] 187 |         let zdd = self.factory.union(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout]     |                                                     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 187 -         let zdd = self.factory.union(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout] 187 +         let zdd = self.factory.union(&self.zdd, &rhs.zdd);
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout]  49 + #[derive(Clone)]
[INFO] [stdout]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/wrapped.rs:195:53
[INFO] [stdout]     |
[INFO] [stdout] 195 |         let zdd = self.factory.inter(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout]     |                                                     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 195 -         let zdd = self.factory.inter(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout] 195 +         let zdd = self.factory.inter(&self.zdd, &rhs.zdd);
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout]  49 + #[derive(Clone)]
[INFO] [stdout]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/wrapped.rs:203:53
[INFO] [stdout]     |
[INFO] [stdout] 203 |         let zdd = self.factory.minus(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout]     |                                                     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 203 -         let zdd = self.factory.minus(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout] 203 +         let zdd = self.factory.minus(&self.zdd, &rhs.zdd);
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout]  49 + #[derive(Clone)]
[INFO] [stdout]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/wrapped.rs:212:44
[INFO] [stdout]     |
[INFO] [stdout] 212 |         self.factory.subset(&self.zdd, &rhs.borrow().zdd)
[INFO] [stdout]     |                                            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 212 -         self.factory.subset(&self.zdd, &rhs.borrow().zdd)
[INFO] [stdout] 212 +         self.factory.subset(&self.zdd, &rhs.zdd)
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout]  49 + #[derive(Clone)]
[INFO] [stdout]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.87s
[INFO] running `Command { std: "docker" "inspect" "aef6b25f98cb44142d3aab801f1aeae76996d196ce2bbc86b57b933ac065448c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aef6b25f98cb44142d3aab801f1aeae76996d196ce2bbc86b57b933ac065448c", kill_on_drop: false }`
[INFO] [stdout] aef6b25f98cb44142d3aab801f1aeae76996d196ce2bbc86b57b933ac065448c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+1.93.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b8fe3f082d14a3d0a36679e499e6046ededf9ca700f5dc221c81b42dc76c0d34
[INFO] running `Command { std: "docker" "start" "-a" "b8fe3f082d14a3d0a36679e499e6046ededf9ca700f5dc221c81b42dc76c0d34", kill_on_drop: false }`
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:67:1
[INFO] [stdout]    |
[INFO] [stdout] 67 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/wrapped.rs:187:53
[INFO] [stdout]     |
[INFO] [stdout] 187 |         let zdd = self.factory.union(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout]     |                                                     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 187 -         let zdd = self.factory.union(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout] 187 +         let zdd = self.factory.union(&self.zdd, &rhs.zdd);
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout]  49 + #[derive(Clone)]
[INFO] [stdout]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/wrapped.rs:195:53
[INFO] [stdout]     |
[INFO] [stdout] 195 |         let zdd = self.factory.inter(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout]     |                                                     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 195 -         let zdd = self.factory.inter(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout] 195 +         let zdd = self.factory.inter(&self.zdd, &rhs.zdd);
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout]  49 + #[derive(Clone)]
[INFO] [stdout]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling zdd v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/wrapped.rs:203:53
[INFO] [stdout]     |
[INFO] [stdout] 203 |         let zdd = self.factory.minus(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout]     |                                                     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 203 -         let zdd = self.factory.minus(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout] 203 +         let zdd = self.factory.minus(&self.zdd, &rhs.zdd);
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout]  49 + #[derive(Clone)]
[INFO] [stdout]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/wrapped.rs:212:44
[INFO] [stdout]     |
[INFO] [stdout] 212 |         self.factory.subset(&self.zdd, &rhs.borrow().zdd)
[INFO] [stdout]     |                                            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 212 -         self.factory.subset(&self.zdd, &rhs.borrow().zdd)
[INFO] [stdout] 212 +         self.factory.subset(&self.zdd, &rhs.zdd)
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout]  49 + #[derive(Clone)]
[INFO] [stdout]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]   --> src/lib.rs:67:1
[INFO] [stdout]    |
[INFO] [stdout] 67 | #[macro_use]
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/wrapped.rs:187:53
[INFO] [stdout]     |
[INFO] [stdout] 187 |         let zdd = self.factory.union(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout]     |                                                     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 187 -         let zdd = self.factory.union(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout] 187 +         let zdd = self.factory.union(&self.zdd, &rhs.zdd);
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout]  49 + #[derive(Clone)]
[INFO] [stdout]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/wrapped.rs:195:53
[INFO] [stdout]     |
[INFO] [stdout] 195 |         let zdd = self.factory.inter(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout]     |                                                     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 195 -         let zdd = self.factory.inter(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout] 195 +         let zdd = self.factory.inter(&self.zdd, &rhs.zdd);
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout]  49 + #[derive(Clone)]
[INFO] [stdout]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/wrapped.rs:203:53
[INFO] [stdout]     |
[INFO] [stdout] 203 |         let zdd = self.factory.minus(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout]     |                                                     ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 203 -         let zdd = self.factory.minus(&self.zdd, &rhs.borrow().zdd);
[INFO] [stdout] 203 +         let zdd = self.factory.minus(&self.zdd, &rhs.zdd);
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout]  49 + #[derive(Clone)]
[INFO] [stdout]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/wrapped.rs:212:44
[INFO] [stdout]     |
[INFO] [stdout] 212 |         self.factory.subset(&self.zdd, &rhs.borrow().zdd)
[INFO] [stdout]     |                                            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 212 -         self.factory.subset(&self.zdd, &rhs.borrow().zdd)
[INFO] [stdout] 212 +         self.factory.subset(&self.zdd, &rhs.zdd)
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout]  49 + #[derive(Clone)]
[INFO] [stdout]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.24s
[INFO] running `Command { std: "docker" "inspect" "b8fe3f082d14a3d0a36679e499e6046ededf9ca700f5dc221c81b42dc76c0d34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8fe3f082d14a3d0a36679e499e6046ededf9ca700f5dc221c81b42dc76c0d34", kill_on_drop: false }`
[INFO] [stdout] b8fe3f082d14a3d0a36679e499e6046ededf9ca700f5dc221c81b42dc76c0d34
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+1.93.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d633abd3af2293261c20a90371abc33ae5466ab2b64f2d1774893837bb41a3c4
[INFO] running `Command { std: "docker" "start" "-a" "d633abd3af2293261c20a90371abc33ae5466ab2b64f2d1774893837bb41a3c4", kill_on_drop: false }`
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]   --> src/lib.rs:67:1
[INFO] [stderr]    |
[INFO] [stderr] 67 | #[macro_use]
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stderr]    --> src/wrapped.rs:187:53
[INFO] [stderr]     |
[INFO] [stderr] 187 |         let zdd = self.factory.union(&self.zdd, &rhs.borrow().zdd);
[INFO] [stderr]     |                                                     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` copies the reference, which does not do anything and can be removed
[INFO] [stderr]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stderr] help: remove this redundant call
[INFO] [stderr]     |
[INFO] [stderr] 187 -         let zdd = self.factory.union(&self.zdd, &rhs.borrow().zdd);
[INFO] [stderr] 187 +         let zdd = self.factory.union(&self.zdd, &rhs.zdd);
[INFO] [stderr]     |
[INFO] [stderr] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stderr]     |
[INFO] [stderr]  49 + #[derive(Clone)]
[INFO] [stderr]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stderr]    --> src/wrapped.rs:195:53
[INFO] [stderr]     |
[INFO] [stderr] 195 |         let zdd = self.factory.inter(&self.zdd, &rhs.borrow().zdd);
[INFO] [stderr]     |                                                     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` copies the reference, which does not do anything and can be removed
[INFO] [stderr] help: remove this redundant call
[INFO] [stderr]     |
[INFO] [stderr] 195 -         let zdd = self.factory.inter(&self.zdd, &rhs.borrow().zdd);
[INFO] [stderr] 195 +         let zdd = self.factory.inter(&self.zdd, &rhs.zdd);
[INFO] [stderr]     |
[INFO] [stderr] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stderr]     |
[INFO] [stderr]  49 + #[derive(Clone)]
[INFO] [stderr]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stderr]    --> src/wrapped.rs:203:53
[INFO] [stderr]     |
[INFO] [stderr] 203 |         let zdd = self.factory.minus(&self.zdd, &rhs.borrow().zdd);
[INFO] [stderr]     |                                                     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` copies the reference, which does not do anything and can be removed
[INFO] [stderr] help: remove this redundant call
[INFO] [stderr]     |
[INFO] [stderr] 203 -         let zdd = self.factory.minus(&self.zdd, &rhs.borrow().zdd);
[INFO] [stderr] 203 +         let zdd = self.factory.minus(&self.zdd, &rhs.zdd);
[INFO] [stderr]     |
[INFO] [stderr] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stderr]     |
[INFO] [stderr]  49 + #[derive(Clone)]
[INFO] [stderr]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stderr]    --> src/wrapped.rs:212:44
[INFO] [stderr]     |
[INFO] [stderr] 212 |         self.factory.subset(&self.zdd, &rhs.borrow().zdd)
[INFO] [stderr]     |                                            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: the type `wrapped::Zdd<Label>` does not implement `Borrow`, so calling `borrow` on `&wrapped::Zdd<Label>` copies the reference, which does not do anything and can be removed
[INFO] [stderr] help: remove this redundant call
[INFO] [stderr]     |
[INFO] [stderr] 212 -         self.factory.subset(&self.zdd, &rhs.borrow().zdd)
[INFO] [stderr] 212 +         self.factory.subset(&self.zdd, &rhs.zdd)
[INFO] [stderr]     |
[INFO] [stderr] help: if you meant to clone `wrapped::Zdd<Label>`, implement `Clone` for it
[INFO] [stderr]     |
[INFO] [stderr]  49 + #[derive(Clone)]
[INFO] [stderr]  50 | pub struct Zdd<Label: Eq + Hash + Clone> {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `zdd` (lib) generated 5 warnings (run `cargo fix --lib -p zdd` to apply 4 suggestions)
[INFO] [stderr] warning: `zdd` (lib test) generated 5 warnings (5 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/zdd-a6a6d528358a28c7)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/lib.rs (/opt/rustwide/target/debug/deps/lib-7f8cf84b542ac282)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test thirteen_times_100 ... ok
[INFO] [stdout] test three_times_1000000 ... FAILED
[INFO] [stdout] test seven_times_10000 ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- three_times_1000000 stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'three_times_1000000' (20) panicked at tests/lib.rs:345:27:
[INFO] [stdout] Read-only file system (os error 30)
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x61967045bd72 - std::backtrace_rs::backtrace::libunwind::trace::h90e89fac33585832
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x61967045bd72 - std::backtrace_rs::backtrace::trace_unsynchronized::heebcf2380a8e7359
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x61967045bd72 - std::sys::backtrace::_print_fmt::hdf3e2a22d2f810db
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/sys/backtrace.rs:68:9
[INFO] [stdout]    3:     0x61967045bd72 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hac1d885928ba8582
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/sys/backtrace.rs:38:26
[INFO] [stdout]    4:     0x61967046c3e7 - core::fmt::rt::Argument::fmt::h6901eb7c19abebe8
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x61967046c3e7 - core::fmt::write::h83ebb4d32483be9e
[INFO] [stdout]    6:     0x61967042aa16 - std::io::default_write_fmt::h751a79cdae495f10
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x61967042aa16 - std::io::Write::write_fmt::h9ef514f8700ff7b2
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x61967043b089 - std::sys::backtrace::BacktraceLock::print::hcc2e1a3ac996c911
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/sys/backtrace.rs:41:9
[INFO] [stdout]    9:     0x61967043b089 - std::panicking::default_hook::{{closure}}::h8e9c4d1276f0925f
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x61967043af21 - std::panicking::default_hook::h2b2078d38b534dfb
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x6196703c906e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h39d051e7dedac6a7
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x6196703c906e - test::test_main_with_exit_callback::{{closure}}::h4b005fe75814c302
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x61967043b302 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hd426070722c13cbf
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x61967043b302 - std::panicking::panic_with_hook::h39b739724e701bfd
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x61967043b148 - std::panicking::panic_handler::{{closure}}::he540c4833054e458
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x6196704366c9 - std::sys::backtrace::__rust_end_short_backtrace::hfa179d89deec8aed
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/sys/backtrace.rs:176:18
[INFO] [stdout]   17:     0x61967041f7dd - __rustc[d131491b17107b07]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x6196704739ac - core::panicking::panic_fmt::ha564519d657d9c46
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x61967039c428 - core::panicking::panic_display::hd773f9509998da47
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/panicking.rs:259:5
[INFO] [stdout]   20:     0x619670390f1d - lib::run::h6bf67abf2dd1457d
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/lib.rs:345:27
[INFO] [stdout]   21:     0x619670390565 - lib::three_times_1000000::hd5343359864f8376
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/lib.rs:375:15
[INFO] [stdout]   22:     0x6196703905b7 - lib::three_times_1000000::{{closure}}::hf173abfb709cdce0
[INFO] [stdout]                                at /opt/rustwide/workdir/tests/lib.rs:371:25
[INFO] [stdout]   23:     0x61967039a2b6 - core::ops::function::FnOnce::call_once::h38817af0baf0db01
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x6196703c8e9b - core::ops::function::FnOnce::call_once::h0217b30cfdee2e67
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x6196703c8e9b - test::__rust_begin_short_backtrace::h6d98714a1e28f556
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/test/src/lib.rs:663:18
[INFO] [stdout]   26:     0x6196703dc82a - test::run_test_in_process::{{closure}}::he2c70d2634d3a3cc
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/test/src/lib.rs:686:74
[INFO] [stdout]   27:     0x6196703dc82a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h40a0a825bcf17fdd
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28:     0x6196703dc82a - std::panicking::catch_unwind::do_call::h6c8eb5dd6e7b5975
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:581:40
[INFO] [stdout]   29:     0x6196703dc82a - std::panicking::catch_unwind::h55455eac2972ad1e
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:544:19
[INFO] [stdout]   30:     0x6196703dc82a - std::panic::catch_unwind::h0025465150a5e558
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x6196703dc82a - test::run_test_in_process::hb61e682f9b630fbc
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x6196703dc82a - test::run_test::{{closure}}::hc2c2a7a38ab176e2
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x6196703b6ac4 - test::run_test::{{closure}}::ha91867b85cd2a911
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x6196703b6ac4 - std::sys::backtrace::__rust_begin_short_backtrace::ha00a9fe02049c339
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/sys/backtrace.rs:160:18
[INFO] [stdout]   35:     0x6196703ba3f2 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::hd629fba9153dfb55
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/thread/lifecycle.rs:92:13
[INFO] [stdout]   36:     0x6196703ba3f2 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4189018816a5c5d9
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   37:     0x6196703ba3f2 - std::panicking::catch_unwind::do_call::hf9fcdbca3c2e9877
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:581:40
[INFO] [stdout]   38:     0x6196703ba3f2 - std::panicking::catch_unwind::h97b92d88631c7c64
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panicking.rs:544:19
[INFO] [stdout]   39:     0x6196703ba3f2 - std::panic::catch_unwind::ha77cdbb68e725e5e
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x6196703ba3f2 - std::thread::lifecycle::spawn_unchecked::{{closure}}::h511f05bc1a132253
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/thread/lifecycle.rs:90:26
[INFO] [stdout]   41:     0x6196703ba3f2 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h6b68b31e9b685cb8
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x619670431d4f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h22a27d165e4e871d
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   43:     0x619670431d4f - std::sys::thread::unix::Thread::new::thread_start::h45cc87bb053add0f
[INFO] [stdout]                                at /rustc/254b59607d4417e9dffbc307138ae5c86280fe4c/library/std/src/sys/thread/unix.rs:118:17
[INFO] [stdout]   44:     0x7e61bf918aa4 - <unknown>
[INFO] [stdout]   45:     0x7e61bf9a5a64 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     three_times_1000000
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 2 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.73s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--test lib`
[INFO] running `Command { std: "docker" "inspect" "d633abd3af2293261c20a90371abc33ae5466ab2b64f2d1774893837bb41a3c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d633abd3af2293261c20a90371abc33ae5466ab2b64f2d1774893837bb41a3c4", kill_on_drop: false }`
[INFO] [stdout] d633abd3af2293261c20a90371abc33ae5466ab2b64f2d1774893837bb41a3c4
