[INFO] cloning repository https://github.com/Salpadding/learning-wasm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Salpadding/learning-wasm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSalpadding%2Flearning-wasm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSalpadding%2Flearning-wasm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9ea7d04e677015207fc3ed4988b1e6ad6f30ba5b
[INFO] checking Salpadding/learning-wasm against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSalpadding%2Flearning-wasm" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Salpadding/learning-wasm on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Salpadding/learning-wasm
[INFO] finished tweaking git repo https://github.com/Salpadding/learning-wasm
[INFO] tweaked toml for git repo https://github.com/Salpadding/learning-wasm written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/Salpadding/learning-wasm already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 446fd471eb98bfc2494c52a30317c839c89536e3e72dcca7dac45c0ac2b1edb6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "446fd471eb98bfc2494c52a30317c839c89536e3e72dcca7dac45c0ac2b1edb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "446fd471eb98bfc2494c52a30317c839c89536e3e72dcca7dac45c0ac2b1edb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "446fd471eb98bfc2494c52a30317c839c89536e3e72dcca7dac45c0ac2b1edb6", kill_on_drop: false }`
[INFO] [stdout] 446fd471eb98bfc2494c52a30317c839c89536e3e72dcca7dac45c0ac2b1edb6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dc31b42372140ca7b3fe23bf2b0f2c816c2f16b691c62f86db20f56d8a6bcc1b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "dc31b42372140ca7b3fe23bf2b0f2c816c2f16b691c62f86db20f56d8a6bcc1b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking learning-wasm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::print_stream`
[INFO] [stdout]  --> src/elements/sections.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use super::print_stream;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ValueType`
[INFO] [stdout]  --> src/elements/global_entry.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::types::{ValueType};
[INFO] [stdout]   |                    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Instruction`
[INFO] [stdout]  --> src/elements/global_entry.rs:2:18
[INFO] [stdout]   |
[INFO] [stdout] 2 | use super::ops::{Instruction, InitExpr};
[INFO] [stdout]   |                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]   --> src/elements/module.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |     use std::io;
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::super::print_stream`
[INFO] [stdout]   --> src/elements/module.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |     use super::super::print_stream;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Error`
[INFO] [stdout]    --> src/elements/primitives.rs:337:30
[INFO] [stdout]     |
[INFO] [stdout] 337 |     use super::{Deserialize, Error};
[INFO] [stdout]     |                              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::print_stream`
[INFO] [stdout]  --> src/elements/sections.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use super::print_stream;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ValueType`
[INFO] [stdout]  --> src/elements/global_entry.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::types::{ValueType};
[INFO] [stdout]   |                    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Instruction`
[INFO] [stdout]  --> src/elements/global_entry.rs:2:18
[INFO] [stdout]   |
[INFO] [stdout] 2 | use super::ops::{Instruction, InitExpr};
[INFO] [stdout]   |                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `m`
[INFO] [stdout]   --> src/main.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let m = Module::default();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `m`
[INFO] [stdout]   --> src/main.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let m = Module::default();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `m`
[INFO] [stdout]   --> src/elements/module.rs:81:13
[INFO] [stdout]    |
[INFO] [stdout] 81 |         let m = Module::deserialize(&mut buf).unwrap();
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/elements/ops.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let mut ins: Vec<Instruction> = Vec::new();
[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/elements/ops.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let mut ins: Vec<Instruction> = Vec::new();
[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: function is never used: `print_stream`
[INFO] [stdout]   --> src/elements/mod.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn print_stream<R: io::Read>(r: &mut R, max_len: usize) -> io::Result<()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `InconsistentLength`
[INFO] [stdout]   --> src/elements/mod.rs:72:2
[INFO] [stdout]    |
[INFO] [stdout] 72 | /     InconsistentLength {
[INFO] [stdout] 73 | |         /// Expected length of the definition.
[INFO] [stdout] 74 | |         expected: usize,
[INFO] [stdout] 75 | |         /// Actual length of the definition.
[INFO] [stdout] 76 | |         actual: usize
[INFO] [stdout] 77 | |     },
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `InvalidVarUint64`
[INFO] [stdout]    --> src/elements/mod.rs:106:2
[INFO] [stdout]     |
[INFO] [stdout] 106 |     InvalidVarUint64,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `InconsistentMetadata`
[INFO] [stdout]    --> src/elements/mod.rs:108:2
[INFO] [stdout]     |
[INFO] [stdout] 108 |     InconsistentMetadata,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `InvalidSectionId`
[INFO] [stdout]    --> src/elements/mod.rs:110:2
[INFO] [stdout]     |
[INFO] [stdout] 110 |     InvalidSectionId(u8),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SectionsOutOfOrder`
[INFO] [stdout]    --> src/elements/mod.rs:112:2
[INFO] [stdout]     |
[INFO] [stdout] 112 |     SectionsOutOfOrder,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `DuplicatedSections`
[INFO] [stdout]    --> src/elements/mod.rs:114:2
[INFO] [stdout]     |
[INFO] [stdout] 114 |     DuplicatedSections(u8),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `InconsistentCode`
[INFO] [stdout]    --> src/elements/mod.rs:126:2
[INFO] [stdout]     |
[INFO] [stdout] 126 |     InconsistentCode,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `InvalidSegmentFlags`
[INFO] [stdout]    --> src/elements/mod.rs:128:2
[INFO] [stdout]     |
[INFO] [stdout] 128 |     InvalidSegmentFlags(u32),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `DuplicatedNameSubsections`
[INFO] [stdout]    --> src/elements/mod.rs:132:2
[INFO] [stdout]     |
[INFO] [stdout] 132 |     DuplicatedNameSubsections(u8),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `UnknownNameSubsectionType`
[INFO] [stdout]    --> src/elements/mod.rs:134:2
[INFO] [stdout]     |
[INFO] [stdout] 134 |     UnknownNameSubsectionType(u8),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `BInt`
[INFO] [stdout]   --> src/main.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | type BInt = i32;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_stream`
[INFO] [stdout]   --> src/elements/mod.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub fn print_stream<R: io::Read>(r: &mut R, max_len: usize) -> io::Result<()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `InconsistentLength`
[INFO] [stdout]   --> src/elements/mod.rs:72:2
[INFO] [stdout]    |
[INFO] [stdout] 72 | /     InconsistentLength {
[INFO] [stdout] 73 | |         /// Expected length of the definition.
[INFO] [stdout] 74 | |         expected: usize,
[INFO] [stdout] 75 | |         /// Actual length of the definition.
[INFO] [stdout] 76 | |         actual: usize
[INFO] [stdout] 77 | |     },
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `InvalidVarUint64`
[INFO] [stdout]    --> src/elements/mod.rs:106:2
[INFO] [stdout]     |
[INFO] [stdout] 106 |     InvalidVarUint64,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `InconsistentMetadata`
[INFO] [stdout]    --> src/elements/mod.rs:108:2
[INFO] [stdout]     |
[INFO] [stdout] 108 |     InconsistentMetadata,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `InvalidSectionId`
[INFO] [stdout]    --> src/elements/mod.rs:110:2
[INFO] [stdout]     |
[INFO] [stdout] 110 |     InvalidSectionId(u8),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `SectionsOutOfOrder`
[INFO] [stdout]    --> src/elements/mod.rs:112:2
[INFO] [stdout]     |
[INFO] [stdout] 112 |     SectionsOutOfOrder,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `DuplicatedSections`
[INFO] [stdout]    --> src/elements/mod.rs:114:2
[INFO] [stdout]     |
[INFO] [stdout] 114 |     DuplicatedSections(u8),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `InconsistentCode`
[INFO] [stdout]    --> src/elements/mod.rs:126:2
[INFO] [stdout]     |
[INFO] [stdout] 126 |     InconsistentCode,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `InvalidSegmentFlags`
[INFO] [stdout]    --> src/elements/mod.rs:128:2
[INFO] [stdout]     |
[INFO] [stdout] 128 |     InvalidSegmentFlags(u32),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `DuplicatedNameSubsections`
[INFO] [stdout]    --> src/elements/mod.rs:132:2
[INFO] [stdout]     |
[INFO] [stdout] 132 |     DuplicatedNameSubsections(u8),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `UnknownNameSubsectionType`
[INFO] [stdout]    --> src/elements/mod.rs:134:2
[INFO] [stdout]     |
[INFO] [stdout] 134 |     UnknownNameSubsectionType(u8),
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/io.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn new(r: &'a mut T) -> BufReader<'a, T> {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `BInt`
[INFO] [stdout]   --> src/main.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | type BInt = i32;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 22 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.10s
[INFO] running `Command { std: "docker" "inspect" "dc31b42372140ca7b3fe23bf2b0f2c816c2f16b691c62f86db20f56d8a6bcc1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc31b42372140ca7b3fe23bf2b0f2c816c2f16b691c62f86db20f56d8a6bcc1b", kill_on_drop: false }`
[INFO] [stdout] dc31b42372140ca7b3fe23bf2b0f2c816c2f16b691c62f86db20f56d8a6bcc1b