[INFO] cloning repository https://github.com/liesnikov/mlang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/liesnikov/mlang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliesnikov%2Fmlang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliesnikov%2Fmlang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6df18d454865b3d4b0c4ee24ed63ef8b2325a4f1
[INFO] checking liesnikov/mlang against try#5d96fa0e954d77528204a1ba3b8847ec083c779b for pr-153457
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliesnikov%2Fmlang" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/liesnikov/mlang
[INFO] finished tweaking git repo https://github.com/liesnikov/mlang
[INFO] tweaked toml for git repo https://github.com/liesnikov/mlang written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/liesnikov/mlang on toolchain 5d96fa0e954d77528204a1ba3b8847ec083c779b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5d96fa0e954d77528204a1ba3b8847ec083c779b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/liesnikov/mlang 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" "+5d96fa0e954d77528204a1ba3b8847ec083c779b" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking liesnikov/mlang against try#5d96fa0e954d77528204a1ba3b8847ec083c779b for pr-153457
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliesnikov%2Fmlang" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/liesnikov/mlang
[INFO] finished tweaking git repo https://github.com/liesnikov/mlang
[INFO] tweaked toml for git repo https://github.com/liesnikov/mlang written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/liesnikov/mlang on toolchain 5d96fa0e954d77528204a1ba3b8847ec083c779b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5d96fa0e954d77528204a1ba3b8847ec083c779b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/liesnikov/mlang 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" "+5d96fa0e954d77528204a1ba3b8847ec083c779b" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded itoa v1.0.4
[INFO] [stderr]   Downloaded ryu v1.0.11
[INFO] [stderr]   Downloaded serde v1.0.145
[INFO] [stderr]   Downloaded serde_yaml v0.9.13
[INFO] [stderr]   Downloaded unsafe-libyaml v0.2.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:cfa559dde23f44738f9990739aaa3487d8df3af37eb5df0572f7cf76004a604a" "/opt/rustwide/cargo-home/bin/cargo" "+5d96fa0e954d77528204a1ba3b8847ec083c779b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1d333236486a632c128e07e06978421d7e91d4d6df12f85276666af67cebd647
[INFO] running `Command { std: "docker" "start" "-a" "1d333236486a632c128e07e06978421d7e91d4d6df12f85276666af67cebd647", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d333236486a632c128e07e06978421d7e91d4d6df12f85276666af67cebd647", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d333236486a632c128e07e06978421d7e91d4d6df12f85276666af67cebd647", kill_on_drop: false }`
[INFO] [stdout] 1d333236486a632c128e07e06978421d7e91d4d6df12f85276666af67cebd647
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:cfa559dde23f44738f9990739aaa3487d8df3af37eb5df0572f7cf76004a604a" "/opt/rustwide/cargo-home/bin/cargo" "+5d96fa0e954d77528204a1ba3b8847ec083c779b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 066dab94517a8537d7d9ae6b643879111c4db45c238b986389f0d65345405b01
[INFO] running `Command { std: "docker" "start" "-a" "066dab94517a8537d7d9ae6b643879111c4db45c238b986389f0d65345405b01", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling serde v1.0.145
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking itoa v1.0.4
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]     Checking unsafe-libyaml v0.2.4
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]     Checking serde_yaml v0.9.13
[INFO] [stderr]     Checking mlang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `MBool` is never constructed
[INFO] [stdout]  --> src/mlang/expr.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct MBool {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MMinus` is never constructed
[INFO] [stdout]   --> src/mlang/expr.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub struct MMinus{
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mminus` is never used
[INFO] [stdout]   --> src/mlang/expr.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub fn mminus(l : Box<dyn MExpr<isize>>, r : Box<dyn MExpr<isize>>) -> Box<dyn MExpr<isize>> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `muminus` is never used
[INFO] [stdout]   --> src/mlang/expr.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub fn muminus(i : Box<dyn MExpr<isize>>) -> Box<dyn MExpr<isize>> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MBoolV` is never constructed
[INFO] [stdout]    --> src/mlang/expr.rs:127:12
[INFO] [stdout]     |
[INFO] [stdout] 127 | pub struct MBoolV {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mbool` is never used
[INFO] [stdout]    --> src/mlang/expr.rs:131:8
[INFO] [stdout]     |
[INFO] [stdout] 131 | pub fn mbool(b : bool) -> Box<dyn MExpr<bool>> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MBoolNeg` is never constructed
[INFO] [stdout]    --> src/mlang/expr.rs:143:12
[INFO] [stdout]     |
[INFO] [stdout] 143 | pub struct MBoolNeg {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mboolneg` is never used
[INFO] [stdout]    --> src/mlang/expr.rs:147:8
[INFO] [stdout]     |
[INFO] [stdout] 147 | pub fn mboolneg(b : Box<dyn MExpr<bool>>) -> Box<dyn MExpr<bool>> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.88s
[INFO] [stdout] warning: struct `MAnd` is never constructed
[INFO] [stdout]    --> src/mlang/expr.rs:162:12
[INFO] [stdout]     |
[INFO] [stdout] 162 | pub struct MAnd{
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mand` is never used
[INFO] [stdout]    --> src/mlang/expr.rs:167:8
[INFO] [stdout]     |
[INFO] [stdout] 167 | pub fn mand(l : Box<dyn MExpr<bool>>, r : Box<dyn MExpr<bool>>) -> Box<dyn MExpr<bool>> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MOr` is never constructed
[INFO] [stdout]    --> src/mlang/expr.rs:184:12
[INFO] [stdout]     |
[INFO] [stdout] 184 | pub struct MOr{
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mor` is never used
[INFO] [stdout]    --> src/mlang/expr.rs:189:8
[INFO] [stdout]     |
[INFO] [stdout] 189 | pub fn mor(l : Box<dyn MExpr<bool>>, r : Box<dyn MExpr<bool>>) -> Box<dyn MExpr<bool>> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MIf` is never constructed
[INFO] [stdout]    --> src/mlang/expr.rs:206:12
[INFO] [stdout]     |
[INFO] [stdout] 206 | pub struct MIf<T>{
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mif` is never used
[INFO] [stdout]    --> src/mlang/expr.rs:212:8
[INFO] [stdout]     |
[INFO] [stdout] 212 | pub fn mif<T>(c : Box<dyn MExpr<bool>>,
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MBool` is never constructed
[INFO] [stdout]  --> src/mlang/expr.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct MBool {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MMinus` is never constructed
[INFO] [stdout]   --> src/mlang/expr.rs:56:12
[INFO] [stdout]    |
[INFO] [stdout] 56 | pub struct MMinus{
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mminus` is never used
[INFO] [stdout]   --> src/mlang/expr.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub fn mminus(l : Box<dyn MExpr<isize>>, r : Box<dyn MExpr<isize>>) -> Box<dyn MExpr<isize>> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `muminus` is never used
[INFO] [stdout]   --> src/mlang/expr.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub fn muminus(i : Box<dyn MExpr<isize>>) -> Box<dyn MExpr<isize>> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MBoolV` is never constructed
[INFO] [stdout]    --> src/mlang/expr.rs:127:12
[INFO] [stdout]     |
[INFO] [stdout] 127 | pub struct MBoolV {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mbool` is never used
[INFO] [stdout]    --> src/mlang/expr.rs:131:8
[INFO] [stdout]     |
[INFO] [stdout] 131 | pub fn mbool(b : bool) -> Box<dyn MExpr<bool>> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MBoolNeg` is never constructed
[INFO] [stdout]    --> src/mlang/expr.rs:143:12
[INFO] [stdout]     |
[INFO] [stdout] 143 | pub struct MBoolNeg {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mboolneg` is never used
[INFO] [stdout]    --> src/mlang/expr.rs:147:8
[INFO] [stdout]     |
[INFO] [stdout] 147 | pub fn mboolneg(b : Box<dyn MExpr<bool>>) -> Box<dyn MExpr<bool>> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MAnd` is never constructed
[INFO] [stdout]    --> src/mlang/expr.rs:162:12
[INFO] [stdout]     |
[INFO] [stdout] 162 | pub struct MAnd{
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mand` is never used
[INFO] [stdout]    --> src/mlang/expr.rs:167:8
[INFO] [stdout]     |
[INFO] [stdout] 167 | pub fn mand(l : Box<dyn MExpr<bool>>, r : Box<dyn MExpr<bool>>) -> Box<dyn MExpr<bool>> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MOr` is never constructed
[INFO] [stdout]    --> src/mlang/expr.rs:184:12
[INFO] [stdout]     |
[INFO] [stdout] 184 | pub struct MOr{
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mor` is never used
[INFO] [stdout]    --> src/mlang/expr.rs:189:8
[INFO] [stdout]     |
[INFO] [stdout] 189 | pub fn mor(l : Box<dyn MExpr<bool>>, r : Box<dyn MExpr<bool>>) -> Box<dyn MExpr<bool>> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MIf` is never constructed
[INFO] [stdout]    --> src/mlang/expr.rs:206:12
[INFO] [stdout]     |
[INFO] [stdout] 206 | pub struct MIf<T>{
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mif` is never used
[INFO] [stdout]    --> src/mlang/expr.rs:212:8
[INFO] [stdout]     |
[INFO] [stdout] 212 | pub fn mif<T>(c : Box<dyn MExpr<bool>>,
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "066dab94517a8537d7d9ae6b643879111c4db45c238b986389f0d65345405b01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "066dab94517a8537d7d9ae6b643879111c4db45c238b986389f0d65345405b01", kill_on_drop: false }`
[INFO] [stdout] 066dab94517a8537d7d9ae6b643879111c4db45c238b986389f0d65345405b01
