[INFO] fetching crate wasper 0.1.3...
[INFO] checking wasper-0.1.3 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate wasper 0.1.3 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate wasper 0.1.3
[INFO] finished tweaking crates.io crate wasper 0.1.3
[INFO] tweaked toml for crates.io crate wasper 0.1.3 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate wasper 0.1.3 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate wasper 0.1.3 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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b62f09f8ef21c4cab65c1f6874326e1690d8201b853a4509e71d57abe2116f08
[INFO] running `Command { std: "docker" "start" "-a" "b62f09f8ef21c4cab65c1f6874326e1690d8201b853a4509e71d57abe2116f08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b62f09f8ef21c4cab65c1f6874326e1690d8201b853a4509e71d57abe2116f08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b62f09f8ef21c4cab65c1f6874326e1690d8201b853a4509e71d57abe2116f08", kill_on_drop: false }`
[INFO] [stdout] b62f09f8ef21c4cab65c1f6874326e1690d8201b853a4509e71d57abe2116f08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2cb0d88252e8732d50699f9bef60d6b999b565eaf2f7d95c7e66d519f2e09cc1
[INFO] running `Command { std: "docker" "start" "-a" "2cb0d88252e8732d50699f9bef60d6b999b565eaf2f7d95c7e66d519f2e09cc1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.7
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling serde v1.0.181
[INFO] [stderr]     Checking leb128 v0.2.5
[INFO] [stderr]     Checking regex-syntax v0.7.4
[INFO] [stderr]    Compiling serde_json v1.0.104
[INFO] [stderr]     Checking opt_vec v0.1.2
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]     Checking log v0.4.19
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]     Checking termcolor v1.2.0
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking glob v0.3.1
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]     Checking aho-corasick v1.0.2
[INFO] [stderr]     Checking wasm-encoder v0.31.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking wast v62.0.1
[INFO] [stderr]     Checking regex-automata v0.3.4
[INFO] [stderr]     Checking wasper v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/exec/value.rs:180:11
[INFO] [stdout]     |
[INFO] [stdout] 178 | pub(crate) trait Float: Clone + Copy + PartialEq + PartialOrd {
[INFO] [stdout]     |                  ----- associated items in this trait
[INFO] [stdout] 179 |     type UInt: Copy + core::ops::BitOr<Output = Self::UInt> + core::ops::BitAnd<Output = Self::UInt>;
[INFO] [stdout] 180 |     const ARITHMETIC_NAN: Self::UInt;
[INFO] [stdout]     |           ^^^^^^^^^^^^^^
[INFO] [stdout] 181 |     fn is_nan(self) -> bool;
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 182 |     fn min(self, other: Self) -> Self;
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 183 |     fn max(self, other: Self) -> Self;
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 184 |     fn to_bits(self) -> Self::UInt;
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 185 |     fn from_bits(_: Self::UInt) -> Self;
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 186 |     fn to_arithmetic_nan(self) -> Self {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/exec/instr.rs:515:43
[INFO] [stdout]     |
[INFO] [stdout] 515 |             stack.cvtop(|v: f32| unsafe { core::mem::transmute::<f32, i32>(v) })
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] help: replace this with
[INFO] [stdout]     |
[INFO] [stdout] 515 -             stack.cvtop(|v: f32| unsafe { core::mem::transmute::<f32, i32>(v) })
[INFO] [stdout] 515 +             stack.cvtop(|v: f32| unsafe { f32::to_bits(v).cast_signed() })
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/exec/instr.rs:518:43
[INFO] [stdout]     |
[INFO] [stdout] 518 |             stack.cvtop(|v: f64| unsafe { core::mem::transmute::<f64, i64>(v) })
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace this with
[INFO] [stdout]     |
[INFO] [stdout] 518 -             stack.cvtop(|v: f64| unsafe { core::mem::transmute::<f64, i64>(v) })
[INFO] [stdout] 518 +             stack.cvtop(|v: f64| unsafe { f64::to_bits(v).cast_signed() })
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/exec/instr.rs:521:43
[INFO] [stdout]     |
[INFO] [stdout] 521 |             stack.cvtop(|v: i32| unsafe { core::mem::transmute::<i32, f32>(v) })
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace this with
[INFO] [stdout]     |
[INFO] [stdout] 521 -             stack.cvtop(|v: i32| unsafe { core::mem::transmute::<i32, f32>(v) })
[INFO] [stdout] 521 +             stack.cvtop(|v: i32| unsafe { f32::from_bits(i32::cast_unsigned(v)) })
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/exec/instr.rs:524:43
[INFO] [stdout]     |
[INFO] [stdout] 524 |             stack.cvtop(|v: i64| unsafe { core::mem::transmute::<i64, f64>(v) })
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace this with
[INFO] [stdout]     |
[INFO] [stdout] 524 -             stack.cvtop(|v: i64| unsafe { core::mem::transmute::<i64, f64>(v) })
[INFO] [stdout] 524 +             stack.cvtop(|v: i64| unsafe { f64::from_bits(i64::cast_unsigned(v)) })
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking regex v1.9.1
[INFO] [stderr]     Checking env_logger v0.9.3
[INFO] [stderr]     Checking wat v1.0.69
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/exec/value.rs:180:11
[INFO] [stdout]     |
[INFO] [stdout] 178 | pub(crate) trait Float: Clone + Copy + PartialEq + PartialOrd {
[INFO] [stdout]     |                  ----- associated items in this trait
[INFO] [stdout] 179 |     type UInt: Copy + core::ops::BitOr<Output = Self::UInt> + core::ops::BitAnd<Output = Self::UInt>;
[INFO] [stdout] 180 |     const ARITHMETIC_NAN: Self::UInt;
[INFO] [stdout]     |           ^^^^^^^^^^^^^^
[INFO] [stdout] 181 |     fn is_nan(self) -> bool;
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 182 |     fn min(self, other: Self) -> Self;
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 183 |     fn max(self, other: Self) -> Self;
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 184 |     fn to_bits(self) -> Self::UInt;
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 185 |     fn from_bits(_: Self::UInt) -> Self;
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 186 |     fn to_arithmetic_nan(self) -> Self {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/exec/instr.rs:515:43
[INFO] [stdout]     |
[INFO] [stdout] 515 |             stack.cvtop(|v: f32| unsafe { core::mem::transmute::<f32, i32>(v) })
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] help: replace this with
[INFO] [stdout]     |
[INFO] [stdout] 515 -             stack.cvtop(|v: f32| unsafe { core::mem::transmute::<f32, i32>(v) })
[INFO] [stdout] 515 +             stack.cvtop(|v: f32| unsafe { f32::to_bits(v).cast_signed() })
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/exec/instr.rs:518:43
[INFO] [stdout]     |
[INFO] [stdout] 518 |             stack.cvtop(|v: f64| unsafe { core::mem::transmute::<f64, i64>(v) })
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace this with
[INFO] [stdout]     |
[INFO] [stdout] 518 -             stack.cvtop(|v: f64| unsafe { core::mem::transmute::<f64, i64>(v) })
[INFO] [stdout] 518 +             stack.cvtop(|v: f64| unsafe { f64::to_bits(v).cast_signed() })
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/exec/instr.rs:521:43
[INFO] [stdout]     |
[INFO] [stdout] 521 |             stack.cvtop(|v: i32| unsafe { core::mem::transmute::<i32, f32>(v) })
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace this with
[INFO] [stdout]     |
[INFO] [stdout] 521 -             stack.cvtop(|v: i32| unsafe { core::mem::transmute::<i32, f32>(v) })
[INFO] [stdout] 521 +             stack.cvtop(|v: i32| unsafe { f32::from_bits(i32::cast_unsigned(v)) })
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> src/exec/instr.rs:524:43
[INFO] [stdout]     |
[INFO] [stdout] 524 |             stack.cvtop(|v: i64| unsafe { core::mem::transmute::<i64, f64>(v) })
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace this with
[INFO] [stdout]     |
[INFO] [stdout] 524 -             stack.cvtop(|v: i64| unsafe { core::mem::transmute::<i64, f64>(v) })
[INFO] [stdout] 524 +             stack.cvtop(|v: i64| unsafe { f64::from_bits(i64::cast_unsigned(v)) })
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.24s
[INFO] running `Command { std: "docker" "inspect" "2cb0d88252e8732d50699f9bef60d6b999b565eaf2f7d95c7e66d519f2e09cc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cb0d88252e8732d50699f9bef60d6b999b565eaf2f7d95c7e66d519f2e09cc1", kill_on_drop: false }`
[INFO] [stdout] 2cb0d88252e8732d50699f9bef60d6b999b565eaf2f7d95c7e66d519f2e09cc1