[INFO] cloning repository https://github.com/teoremma/snek
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/teoremma/snek" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fteoremma%2Fsnek", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fteoremma%2Fsnek'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bcea78d816f7ec85c329531afdcc7a074218dc4a
[INFO] checking teoremma/snek against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fteoremma%2Fsnek" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/teoremma/snek
[INFO] finished tweaking git repo https://github.com/teoremma/snek
[INFO] tweaked toml for git repo https://github.com/teoremma/snek written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/teoremma/snek on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/teoremma/snek 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pad v0.1.6
[INFO] [stderr]   Downloaded sexp v1.1.4
[INFO] [stderr]   Downloaded prettytable-rs v0.10.0
[INFO] [stderr]   Downloaded prettydiff v0.6.4
[INFO] [stderr]   Downloaded rustix v0.37.14
[INFO] [stderr]   Downloaded libc v0.2.142
[INFO] [stderr]   Downloaded csv v1.2.1
[INFO] [stderr]   Downloaded linux-raw-sys v0.3.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 59b24d81183807927540f44d214cb5fcdd44e079738090408c86e04610ce1ca3
[INFO] running `Command { std: "docker" "start" "-a" "59b24d81183807927540f44d214cb5fcdd44e079738090408c86e04610ce1ca3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "59b24d81183807927540f44d214cb5fcdd44e079738090408c86e04610ce1ca3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59b24d81183807927540f44d214cb5fcdd44e079738090408c86e04610ce1ca3", kill_on_drop: false }`
[INFO] [stdout] 59b24d81183807927540f44d214cb5fcdd44e079738090408c86e04610ce1ca3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c2dffedf26606aeb215afadbbfe6d718afb645d428c0aebae663d92db00ff2b7
[INFO] running `Command { std: "docker" "start" "-a" "c2dffedf26606aeb215afadbbfe6d718afb645d428c0aebae663d92db00ff2b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.142
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]    Compiling io-lifetimes v1.0.10
[INFO] [stderr]    Compiling rustix v0.37.14
[INFO] [stderr]    Compiling serde v1.0.160
[INFO] [stderr]    Compiling unicode-segmentation v1.10.1
[INFO] [stderr]     Checking linux-raw-sys v0.3.4
[INFO] [stderr]     Checking bitmaps v2.1.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]    Compiling im v15.1.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking rand_xoshiro v0.6.0
[INFO] [stderr]     Checking encode_unicode v1.0.0
[INFO] [stderr]     Checking pad v0.1.6
[INFO] [stderr]     Checking sexp v1.1.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking sized-chunks v0.6.5
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking term v0.7.0
[INFO] [stderr]     Checking is-terminal v0.4.7
[INFO] [stderr]     Checking snek v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/compiler.rs:528:9
[INFO] [stdout]     |
[INFO] [stdout] 528 |         _ => panic!("Unimplemented expression: {:?}", e),
[INFO] [stdout]     |         ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/compiler.rs:528:9
[INFO] [stdout]     |
[INFO] [stdout]  91 |         Expr::Number(n) => {
[INFO] [stdout]     |         --------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout]  98 |         Expr::Boolean(true) => vec![Instr::Mov(Arg::Reg(Reg::Rax), Arg::Imm(repr_true()))],
[INFO] [stdout]     |         ------------------- matches some of the same values
[INFO] [stdout]  99 |         Expr::Boolean(false) => vec![Instr::Mov(Arg::Reg(Reg::Rax), Arg::Imm(repr_false()))],
[INFO] [stdout]     |         -------------------- matches some of the same values
[INFO] [stdout] 100 |         Expr::Var(id) if id == "input" => vec![Instr::Mov(Arg::Reg(Reg::Rax), Arg::Reg(Reg::Rdi))],
[INFO] [stdout] 101 |         Expr::Var(id) => {
[INFO] [stdout]     |         ------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 528 |         _ => panic!("Unimplemented expression: {:?}", e),
[INFO] [stdout]     |         ^ ...and 14 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/compiler.rs:164:17
[INFO] [stdout]     |
[INFO] [stdout] 164 |                 _ => panic!("Unimplemented unary operator: {:?}", op),
[INFO] [stdout]     |                 ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/compiler.rs:164:17
[INFO] [stdout]     |
[INFO] [stdout] 135 |                 Op1::Add1 => {
[INFO] [stdout]     |                 --------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 140 |                 Op1::Sub1 => {
[INFO] [stdout]     |                 --------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 145 |                 Op1::IsNum => {
[INFO] [stdout]     |                 ---------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 155 |                 Op1::IsBool => {
[INFO] [stdout]     |                 ----------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 164 |                 _ => panic!("Unimplemented unary operator: {:?}", op),
[INFO] [stdout]     |                 ^ collectively making this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `repr_n` is never used
[INFO] [stdout]   --> src/compiler.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn repr_n(n: i64) -> i64 { repr(&Expr::Number(n)) }
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking csv v1.2.1
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking prettytable-rs v0.10.0
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking prettydiff v0.6.4
[INFO] [stdout] warning: variant `StaticError` is never constructed
[INFO] [stdout]  --> tests/infra/mod.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub(crate) enum TestKind {
[INFO] [stdout]   |                 -------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 9 |     StaticError,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/compiler.rs:528:9
[INFO] [stdout]     |
[INFO] [stdout] 528 |         _ => panic!("Unimplemented expression: {:?}", e),
[INFO] [stdout]     |         ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/compiler.rs:528:9
[INFO] [stdout]     |
[INFO] [stdout]  91 |         Expr::Number(n) => {
[INFO] [stdout]     |         --------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout]  98 |         Expr::Boolean(true) => vec![Instr::Mov(Arg::Reg(Reg::Rax), Arg::Imm(repr_true()))],
[INFO] [stdout]     |         ------------------- matches some of the same values
[INFO] [stdout]  99 |         Expr::Boolean(false) => vec![Instr::Mov(Arg::Reg(Reg::Rax), Arg::Imm(repr_false()))],
[INFO] [stdout]     |         -------------------- matches some of the same values
[INFO] [stdout] 100 |         Expr::Var(id) if id == "input" => vec![Instr::Mov(Arg::Reg(Reg::Rax), Arg::Reg(Reg::Rdi))],
[INFO] [stdout] 101 |         Expr::Var(id) => {
[INFO] [stdout]     |         ------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 528 |         _ => panic!("Unimplemented expression: {:?}", e),
[INFO] [stdout]     |         ^ ...and 14 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/compiler.rs:164:17
[INFO] [stdout]     |
[INFO] [stdout] 164 |                 _ => panic!("Unimplemented unary operator: {:?}", op),
[INFO] [stdout]     |                 ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/compiler.rs:164:17
[INFO] [stdout]     |
[INFO] [stdout] 135 |                 Op1::Add1 => {
[INFO] [stdout]     |                 --------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 140 |                 Op1::Sub1 => {
[INFO] [stdout]     |                 --------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 145 |                 Op1::IsNum => {
[INFO] [stdout]     |                 ---------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 155 |                 Op1::IsBool => {
[INFO] [stdout]     |                 ----------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 164 |                 _ => panic!("Unimplemented unary operator: {:?}", op),
[INFO] [stdout]     |                 ^ collectively making this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `repr_n` is never used
[INFO] [stdout]   --> src/compiler.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn repr_n(n: i64) -> i64 { repr(&Expr::Number(n)) }
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 21.27s
[INFO] running `Command { std: "docker" "inspect" "c2dffedf26606aeb215afadbbfe6d718afb645d428c0aebae663d92db00ff2b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2dffedf26606aeb215afadbbfe6d718afb645d428c0aebae663d92db00ff2b7", kill_on_drop: false }`
[INFO] [stdout] c2dffedf26606aeb215afadbbfe6d718afb645d428c0aebae663d92db00ff2b7
