[INFO] cloning repository https://github.com/hansihe/beam_code
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hansihe/beam_code" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhansihe%2Fbeam_code", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhansihe%2Fbeam_code'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 64f05a3f331e5ca9fc19c2501739c248995b9587
[INFO] testing hansihe/beam_code against 1.75.0 for beta-1.76-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhansihe%2Fbeam_code" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hansihe/beam_code on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hansihe/beam_code
[INFO] finished tweaking git repo https://github.com/hansihe/beam_code
[INFO] tweaked toml for git repo https://github.com/hansihe/beam_code written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/hansihe/beam_code 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-bigint v0.1.39
[INFO] [stderr]   Downloaded itertools v0.6.0
[INFO] [stderr]   Downloaded eetf v0.3.6
[INFO] [stderr]   Downloaded string-intern v0.1.6
[INFO] [stderr]   Downloaded beam_file v0.2.2
[INFO] [stderr]   Downloaded libflate v0.1.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 59ba96f1bb9cd3f2d2858c0240294ab6a0eb8667c8727230a08ce27032b94f0d
[INFO] running `Command { std: "docker" "start" "-a" "59ba96f1bb9cd3f2d2858c0240294ab6a0eb8667c8727230a08ce27032b94f0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "59ba96f1bb9cd3f2d2858c0240294ab6a0eb8667c8727230a08ce27032b94f0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59ba96f1bb9cd3f2d2858c0240294ab6a0eb8667c8727230a08ce27032b94f0d", kill_on_drop: false }`
[INFO] [stdout] 59ba96f1bb9cd3f2d2858c0240294ab6a0eb8667c8727230a08ce27032b94f0d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e3e7f8b1dc83fbc96784d8098aa2aa8acbeea744c17e69add44f3f89a96339d8
[INFO] running `Command { std: "docker" "start" "-a" "e3e7f8b1dc83fbc96784d8098aa2aa8acbeea744c17e69add44f3f89a96339d8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.26
[INFO] [stderr]    Compiling num-traits v0.1.39
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling byteorder v1.1.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling lazy_static v0.2.8
[INFO] [stderr]    Compiling byteorder v0.5.3
[INFO] [stderr]    Compiling either v1.1.0
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling regex-syntax v0.4.1
[INFO] [stderr]    Compiling thread_local v0.3.4
[INFO] [stderr]    Compiling serde v1.0.10
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling libflate v0.1.9
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling itertools v0.6.0
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling num-integer v0.1.34
[INFO] [stderr]    Compiling num-iter v0.1.33
[INFO] [stderr]    Compiling beam_file v0.2.2
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stderr]    Compiling num-bigint v0.1.39
[INFO] [stderr]    Compiling num-complex v0.1.38
[INFO] [stderr]    Compiling num-rational v0.1.38
[INFO] [stderr]    Compiling num v0.1.39
[INFO] [stderr]    Compiling eetf v0.3.6
[INFO] [stderr]    Compiling string-intern v0.1.6
[INFO] [stderr]    Compiling beam_code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `::std::rc::Rc`
[INFO] [stdout]  --> src/op.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use ::std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Literal`
[INFO] [stdout]  --> src/ssa/mod.rs:5:52
[INFO] [stdout]   |
[INFO] [stdout] 5 | use ::op::{ Op, LabelId, Register, OpKind, Source, Literal };
[INFO] [stdout]   |                                                    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `GraphAccessor`
[INFO] [stdout]  --> src/graph/dfs.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 | use super::{ GraphAccessor, GraphDfs };
[INFO] [stdout]   |              ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ssa/mod.rs:493:56
[INFO] [stdout]     |
[INFO] [stdout] 493 | pub fn function_to_dot(function: &SSAFunction, w: &mut Write) -> ::std::io::Result<()> {
[INFO] [stdout]     |                                                        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 493 | pub fn function_to_dot(function: &SSAFunction, w: &mut dyn Write) -> ::std::io::Result<()> {
[INFO] [stdout]     |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/graph/mod.rs:14:34
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type GraphAccessor<NodeId> = Fn(NodeId, usize) -> Option<NodeId>;
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type GraphAccessor<NodeId> = dyn Fn(NodeId, usize) -> Option<NodeId>;
[INFO] [stdout]    |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `atom_num`
[INFO] [stdout]    --> src/beam_module.rs:218:9
[INFO] [stdout]     |
[INFO] [stdout] 218 |     for atom_num in 0..len {
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_atom_num`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ssa/mod.rs:163:9
[INFO] [stdout]     |
[INFO] [stdout] 163 |     for mut block in &mut basic_blocks {
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ssa/mod.rs:199:9
[INFO] [stdout]     |
[INFO] [stdout] 199 |     for mut block in &mut basic_blocks {
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ssa/mod.rs:400:9
[INFO] [stdout]     |
[INFO] [stdout] 400 |     for mut block in fun.blocks.values_mut() {
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ssa/mod.rs:405:13
[INFO] [stdout]     |
[INFO] [stdout] 405 |         for mut op in block.ops.iter_mut() {
[INFO] [stdout]     |             ----^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `x_reg` is never used
[INFO] [stdout]    --> src/op.rs:687:8
[INFO] [stdout]     |
[INFO] [stdout] 680 | impl Source {
[INFO] [stdout]     | ----------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 687 |     fn x_reg(num: u32) -> Source {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `module` is never read
[INFO] [stdout]   --> src/ssa/mod.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 51 | struct FunDef {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 52 |     module: Atom,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FunDef` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `GraphAccessor` is never used
[INFO] [stdout]   --> src/graph/mod.rs:14:10
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type GraphAccessor<NodeId> = Fn(NodeId, usize) -> Option<NodeId>;
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::std::rc::Rc`
[INFO] [stdout]  --> src/op.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use ::std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Literal`
[INFO] [stdout]  --> src/ssa/mod.rs:5:52
[INFO] [stdout]   |
[INFO] [stdout] 5 | use ::op::{ Op, LabelId, Register, OpKind, Source, Literal };
[INFO] [stdout]   |                                                    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `GraphAccessor`
[INFO] [stdout]  --> src/graph/dfs.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 | use super::{ GraphAccessor, GraphDfs };
[INFO] [stdout]   |              ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ssa/mod.rs:493:56
[INFO] [stdout]     |
[INFO] [stdout] 493 | pub fn function_to_dot(function: &SSAFunction, w: &mut Write) -> ::std::io::Result<()> {
[INFO] [stdout]     |                                                        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 493 | pub fn function_to_dot(function: &SSAFunction, w: &mut dyn Write) -> ::std::io::Result<()> {
[INFO] [stdout]     |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/graph/mod.rs:14:34
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type GraphAccessor<NodeId> = Fn(NodeId, usize) -> Option<NodeId>;
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type GraphAccessor<NodeId> = dyn Fn(NodeId, usize) -> Option<NodeId>;
[INFO] [stdout]    |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `atom_num`
[INFO] [stdout]    --> src/beam_module.rs:218:9
[INFO] [stdout]     |
[INFO] [stdout] 218 |     for atom_num in 0..len {
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_atom_num`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ssa/mod.rs:163:9
[INFO] [stdout]     |
[INFO] [stdout] 163 |     for mut block in &mut basic_blocks {
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ssa/mod.rs:199:9
[INFO] [stdout]     |
[INFO] [stdout] 199 |     for mut block in &mut basic_blocks {
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ssa/mod.rs:400:9
[INFO] [stdout]     |
[INFO] [stdout] 400 |     for mut block in fun.blocks.values_mut() {
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ssa/mod.rs:405:13
[INFO] [stdout]     |
[INFO] [stdout] 405 |         for mut op in block.ops.iter_mut() {
[INFO] [stdout]     |             ----^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `with_reads_labels` is never used
[INFO] [stdout]   --> src/op.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Op {
[INFO] [stdout]    | ------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn with_reads_labels(kind: OpKind, reads: Vec<Source>, labels: Vec<LabelId>) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `CaseEnd` is never constructed
[INFO] [stdout]    --> src/op.rs:156:5
[INFO] [stdout]     |
[INFO] [stdout] 149 | pub enum RaiseType {
[INFO] [stdout]     |          --------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 156 |     CaseEnd,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RaiseType` 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: associated items `x_reg` and `get_register` are never used
[INFO] [stdout]    --> src/op.rs:687:8
[INFO] [stdout]     |
[INFO] [stdout] 680 | impl Source {
[INFO] [stdout]     | ----------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 687 |     fn x_reg(num: u32) -> Source {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 691 |     pub fn get_register(&self) -> Register {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `module` is never read
[INFO] [stdout]   --> src/ssa/mod.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 51 | struct FunDef {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 52 |     module: Atom,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FunDef` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_register` is never used
[INFO] [stdout]   --> src/ssa/representation.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 62 | impl SSASource {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 63 |     pub fn get_register(&self) -> SSARegister {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `GraphAccessor` is never used
[INFO] [stdout]   --> src/graph/mod.rs:14:10
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type GraphAccessor<NodeId> = Fn(NodeId, usize) -> Option<NodeId>;
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.59s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "e3e7f8b1dc83fbc96784d8098aa2aa8acbeea744c17e69add44f3f89a96339d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3e7f8b1dc83fbc96784d8098aa2aa8acbeea744c17e69add44f3f89a96339d8", kill_on_drop: false }`
[INFO] [stdout] e3e7f8b1dc83fbc96784d8098aa2aa8acbeea744c17e69add44f3f89a96339d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 13bbbcf5b26f3aa9f40f7eabe27de06601660403f8f5a98a897c6d736edb55c8
[INFO] running `Command { std: "docker" "start" "-a" "13bbbcf5b26f3aa9f40f7eabe27de06601660403f8f5a98a897c6d736edb55c8", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `::std::rc::Rc`
[INFO] [stdout]  --> src/op.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use ::std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Literal`
[INFO] [stdout]  --> src/ssa/mod.rs:5:52
[INFO] [stdout]   |
[INFO] [stdout] 5 | use ::op::{ Op, LabelId, Register, OpKind, Source, Literal };
[INFO] [stdout]   |                                                    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `GraphAccessor`
[INFO] [stdout]  --> src/graph/dfs.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 | use super::{ GraphAccessor, GraphDfs };
[INFO] [stdout]   |              ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling beam_code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ssa/mod.rs:493:56
[INFO] [stdout]     |
[INFO] [stdout] 493 | pub fn function_to_dot(function: &SSAFunction, w: &mut Write) -> ::std::io::Result<()> {
[INFO] [stdout]     |                                                        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 493 | pub fn function_to_dot(function: &SSAFunction, w: &mut dyn Write) -> ::std::io::Result<()> {
[INFO] [stdout]     |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/graph/mod.rs:14:34
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type GraphAccessor<NodeId> = Fn(NodeId, usize) -> Option<NodeId>;
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type GraphAccessor<NodeId> = dyn Fn(NodeId, usize) -> Option<NodeId>;
[INFO] [stdout]    |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `atom_num`
[INFO] [stdout]    --> src/beam_module.rs:218:9
[INFO] [stdout]     |
[INFO] [stdout] 218 |     for atom_num in 0..len {
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_atom_num`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ssa/mod.rs:163:9
[INFO] [stdout]     |
[INFO] [stdout] 163 |     for mut block in &mut basic_blocks {
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ssa/mod.rs:199:9
[INFO] [stdout]     |
[INFO] [stdout] 199 |     for mut block in &mut basic_blocks {
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ssa/mod.rs:400:9
[INFO] [stdout]     |
[INFO] [stdout] 400 |     for mut block in fun.blocks.values_mut() {
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ssa/mod.rs:405:13
[INFO] [stdout]     |
[INFO] [stdout] 405 |         for mut op in block.ops.iter_mut() {
[INFO] [stdout]     |             ----^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `x_reg` is never used
[INFO] [stdout]    --> src/op.rs:687:8
[INFO] [stdout]     |
[INFO] [stdout] 680 | impl Source {
[INFO] [stdout]     | ----------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 687 |     fn x_reg(num: u32) -> Source {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `module` is never read
[INFO] [stdout]   --> src/ssa/mod.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 51 | struct FunDef {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 52 |     module: Atom,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FunDef` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `GraphAccessor` is never used
[INFO] [stdout]   --> src/graph/mod.rs:14:10
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type GraphAccessor<NodeId> = Fn(NodeId, usize) -> Option<NodeId>;
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::std::rc::Rc`
[INFO] [stdout]  --> src/op.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use ::std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Literal`
[INFO] [stdout]  --> src/ssa/mod.rs:5:52
[INFO] [stdout]   |
[INFO] [stdout] 5 | use ::op::{ Op, LabelId, Register, OpKind, Source, Literal };
[INFO] [stdout]   |                                                    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `GraphAccessor`
[INFO] [stdout]  --> src/graph/dfs.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 | use super::{ GraphAccessor, GraphDfs };
[INFO] [stdout]   |              ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `::std::rc::Rc`
[INFO] [stdout]  --> src/op.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use ::std::rc::Rc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Literal`
[INFO] [stdout]  --> src/ssa/mod.rs:5:52
[INFO] [stdout]   |
[INFO] [stdout] 5 | use ::op::{ Op, LabelId, Register, OpKind, Source, Literal };
[INFO] [stdout]   |                                                    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `GraphAccessor`
[INFO] [stdout]  --> src/graph/dfs.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 | use super::{ GraphAccessor, GraphDfs };
[INFO] [stdout]   |              ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ssa/mod.rs:493:56
[INFO] [stdout]     |
[INFO] [stdout] 493 | pub fn function_to_dot(function: &SSAFunction, w: &mut Write) -> ::std::io::Result<()> {
[INFO] [stdout]     |                                                        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 493 | pub fn function_to_dot(function: &SSAFunction, w: &mut dyn Write) -> ::std::io::Result<()> {
[INFO] [stdout]     |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/graph/mod.rs:14:34
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type GraphAccessor<NodeId> = Fn(NodeId, usize) -> Option<NodeId>;
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type GraphAccessor<NodeId> = dyn Fn(NodeId, usize) -> Option<NodeId>;
[INFO] [stdout]    |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ssa/mod.rs:493:56
[INFO] [stdout]     |
[INFO] [stdout] 493 | pub fn function_to_dot(function: &SSAFunction, w: &mut Write) -> ::std::io::Result<()> {
[INFO] [stdout]     |                                                        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 493 | pub fn function_to_dot(function: &SSAFunction, w: &mut dyn Write) -> ::std::io::Result<()> {
[INFO] [stdout]     |                                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/graph/mod.rs:14:34
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type GraphAccessor<NodeId> = Fn(NodeId, usize) -> Option<NodeId>;
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type GraphAccessor<NodeId> = dyn Fn(NodeId, usize) -> Option<NodeId>;
[INFO] [stdout]    |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `atom_num`
[INFO] [stdout]    --> src/beam_module.rs:218:9
[INFO] [stdout]     |
[INFO] [stdout] 218 |     for atom_num in 0..len {
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_atom_num`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `atom_num`
[INFO] [stdout]    --> src/beam_module.rs:218:9
[INFO] [stdout]     |
[INFO] [stdout] 218 |     for atom_num in 0..len {
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_atom_num`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ssa/mod.rs:163:9
[INFO] [stdout]     |
[INFO] [stdout] 163 |     for mut block in &mut basic_blocks {
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ssa/mod.rs:199:9
[INFO] [stdout]     |
[INFO] [stdout] 199 |     for mut block in &mut basic_blocks {
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ssa/mod.rs:400:9
[INFO] [stdout]     |
[INFO] [stdout] 400 |     for mut block in fun.blocks.values_mut() {
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ssa/mod.rs:405:13
[INFO] [stdout]     |
[INFO] [stdout] 405 |         for mut op in block.ops.iter_mut() {
[INFO] [stdout]     |             ----^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ssa/mod.rs:163:9
[INFO] [stdout]     |
[INFO] [stdout] 163 |     for mut block in &mut basic_blocks {
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ssa/mod.rs:199:9
[INFO] [stdout]     |
[INFO] [stdout] 199 |     for mut block in &mut basic_blocks {
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ssa/mod.rs:400:9
[INFO] [stdout]     |
[INFO] [stdout] 400 |     for mut block in fun.blocks.values_mut() {
[INFO] [stdout]     |         ----^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/ssa/mod.rs:405:13
[INFO] [stdout]     |
[INFO] [stdout] 405 |         for mut op in block.ops.iter_mut() {
[INFO] [stdout]     |             ----^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `with_reads_labels` is never used
[INFO] [stdout]   --> src/op.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Op {
[INFO] [stdout]    | ------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn with_reads_labels(kind: OpKind, reads: Vec<Source>, labels: Vec<LabelId>) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `CaseEnd` is never constructed
[INFO] [stdout]    --> src/op.rs:156:5
[INFO] [stdout]     |
[INFO] [stdout] 149 | pub enum RaiseType {
[INFO] [stdout]     |          --------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 156 |     CaseEnd,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RaiseType` 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: associated items `x_reg` and `get_register` are never used
[INFO] [stdout]    --> src/op.rs:687:8
[INFO] [stdout]     |
[INFO] [stdout] 680 | impl Source {
[INFO] [stdout]     | ----------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 687 |     fn x_reg(num: u32) -> Source {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 691 |     pub fn get_register(&self) -> Register {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `module` is never read
[INFO] [stdout]   --> src/ssa/mod.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 51 | struct FunDef {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 52 |     module: Atom,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FunDef` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_register` is never used
[INFO] [stdout]   --> src/ssa/representation.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 62 | impl SSASource {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 63 |     pub fn get_register(&self) -> SSARegister {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `GraphAccessor` is never used
[INFO] [stdout]   --> src/graph/mod.rs:14:10
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type GraphAccessor<NodeId> = Fn(NodeId, usize) -> Option<NodeId>;
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `x_reg` is never used
[INFO] [stdout]    --> src/op.rs:687:8
[INFO] [stdout]     |
[INFO] [stdout] 680 | impl Source {
[INFO] [stdout]     | ----------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 687 |     fn x_reg(num: u32) -> Source {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `module` is never read
[INFO] [stdout]   --> src/ssa/mod.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 51 | struct FunDef {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 52 |     module: Atom,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FunDef` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `GraphAccessor` is never used
[INFO] [stdout]   --> src/graph/mod.rs:14:10
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub type GraphAccessor<NodeId> = Fn(NodeId, usize) -> Option<NodeId>;
[INFO] [stdout]    |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.72s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "13bbbcf5b26f3aa9f40f7eabe27de06601660403f8f5a98a897c6d736edb55c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13bbbcf5b26f3aa9f40f7eabe27de06601660403f8f5a98a897c6d736edb55c8", kill_on_drop: false }`
[INFO] [stdout] 13bbbcf5b26f3aa9f40f7eabe27de06601660403f8f5a98a897c6d736edb55c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 88091e2f31eaf617344b5d94b548c118dd9f0045cb7720f70f184205a8feb18f
[INFO] running `Command { std: "docker" "start" "-a" "88091e2f31eaf617344b5d94b548c118dd9f0045cb7720f70f184205a8feb18f", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `::std::rc::Rc`
[INFO] [stderr]  --> src/op.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use ::std::rc::Rc;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Literal`
[INFO] [stderr]  --> src/ssa/mod.rs:5:52
[INFO] [stderr]   |
[INFO] [stderr] 5 | use ::op::{ Op, LabelId, Register, OpKind, Source, Literal };
[INFO] [stderr]   |                                                    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `GraphAccessor`
[INFO] [stderr]  --> src/graph/dfs.rs:5:14
[INFO] [stderr]   |
[INFO] [stderr] 5 | use super::{ GraphAccessor, GraphDfs };
[INFO] [stderr]   |              ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/ssa/mod.rs:493:56
[INFO] [stderr]     |
[INFO] [stderr] 493 | pub fn function_to_dot(function: &SSAFunction, w: &mut Write) -> ::std::io::Result<()> {
[INFO] [stderr]     |                                                        ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 493 | pub fn function_to_dot(function: &SSAFunction, w: &mut dyn Write) -> ::std::io::Result<()> {
[INFO] [stderr]     |                                                        +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/graph/mod.rs:14:34
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub type GraphAccessor<NodeId> = Fn(NodeId, usize) -> Option<NodeId>;
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub type GraphAccessor<NodeId> = dyn Fn(NodeId, usize) -> Option<NodeId>;
[INFO] [stderr]    |                                  +++
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `atom_num`
[INFO] [stderr]    --> src/beam_module.rs:218:9
[INFO] [stderr]     |
[INFO] [stderr] 218 |     for atom_num in 0..len {
[INFO] [stderr]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_atom_num`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/ssa/mod.rs:163:9
[INFO] [stderr]     |
[INFO] [stderr] 163 |     for mut block in &mut basic_blocks {
[INFO] [stderr]     |         ----^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/ssa/mod.rs:199:9
[INFO] [stderr]     |
[INFO] [stderr] 199 |     for mut block in &mut basic_blocks {
[INFO] [stderr]     |         ----^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/ssa/mod.rs:400:9
[INFO] [stderr]     |
[INFO] [stderr] 400 |     for mut block in fun.blocks.values_mut() {
[INFO] [stderr]     |         ----^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/ssa/mod.rs:405:13
[INFO] [stderr]     |
[INFO] [stderr] 405 |         for mut op in block.ops.iter_mut() {
[INFO] [stderr]     |             ----^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `x_reg` is never used
[INFO] [stderr]    --> src/op.rs:687:8
[INFO] [stderr]     |
[INFO] [stderr] 680 | impl Source {
[INFO] [stderr]     | ----------- associated function in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 687 |     fn x_reg(num: u32) -> Source {
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `module` is never read
[INFO] [stderr]   --> src/ssa/mod.rs:52:5
[INFO] [stderr]    |
[INFO] [stderr] 51 | struct FunDef {
[INFO] [stderr]    |        ------ field in this struct
[INFO] [stderr] 52 |     module: Atom,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `FunDef` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: type alias `GraphAccessor` is never used
[INFO] [stderr]   --> src/graph/mod.rs:14:10
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub type GraphAccessor<NodeId> = Fn(NodeId, usize) -> Option<NodeId>;
[INFO] [stderr]    |          ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `beam_code` (lib) generated 13 warnings (run `cargo fix --lib -p beam_code` to apply 10 suggestions)
[INFO] [stderr] warning: associated function `with_reads_labels` is never used
[INFO] [stderr]   --> src/op.rs:32:12
[INFO] [stderr]    |
[INFO] [stderr] 15 | impl Op {
[INFO] [stderr]    | ------- associated function in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 32 |     pub fn with_reads_labels(kind: OpKind, reads: Vec<Source>, labels: Vec<LabelId>) -> Self {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `CaseEnd` is never constructed
[INFO] [stderr]    --> src/op.rs:156:5
[INFO] [stderr]     |
[INFO] [stderr] 149 | pub enum RaiseType {
[INFO] [stderr]     |          --------- variant in this enum
[INFO] [stderr] ...
[INFO] [stderr] 156 |     CaseEnd,
[INFO] [stderr]     |     ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `RaiseType` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `x_reg` and `get_register` are never used
[INFO] [stderr]    --> src/op.rs:687:8
[INFO] [stderr]     |
[INFO] [stderr] 680 | impl Source {
[INFO] [stderr]     | ----------- associated items in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 687 |     fn x_reg(num: u32) -> Source {
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 691 |     pub fn get_register(&self) -> Register {
[INFO] [stderr]     |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `get_register` is never used
[INFO] [stderr]   --> src/ssa/representation.rs:63:12
[INFO] [stderr]    |
[INFO] [stderr] 62 | impl SSASource {
[INFO] [stderr]    | -------------- method in this implementation
[INFO] [stderr] 63 |     pub fn get_register(&self) -> SSARegister {
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `beam_code` (bin "beam_code" test) generated 16 warnings (12 duplicates)
[INFO] [stderr] warning: `beam_code` (lib test) generated 13 warnings (13 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/beam_code-c5e9c08ef952ecea)
[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 unittests src/main.rs (/opt/rustwide/target/debug/deps/beam_code-035ee48784f81880)
[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]    Doc-tests beam_code
[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] running `Command { std: "docker" "inspect" "88091e2f31eaf617344b5d94b548c118dd9f0045cb7720f70f184205a8feb18f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88091e2f31eaf617344b5d94b548c118dd9f0045cb7720f70f184205a8feb18f", kill_on_drop: false }`
[INFO] [stdout] 88091e2f31eaf617344b5d94b548c118dd9f0045cb7720f70f184205a8feb18f
