[INFO] fetching crate atomic_refcell 0.1.7...
[INFO] testing atomic_refcell-0.1.7 against 1.54.0 for beta-1.55-1
[INFO] extracting crate atomic_refcell 0.1.7 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate atomic_refcell 0.1.7 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate atomic_refcell 0.1.7
[INFO] finished tweaking crates.io crate atomic_refcell 0.1.7
[INFO] tweaked toml for crates.io crate atomic_refcell 0.1.7 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 41c8edb26bd4806ccdf8bd25890abf0fad47fe57414e038f45c4d504e7528d58
[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" "41c8edb26bd4806ccdf8bd25890abf0fad47fe57414e038f45c4d504e7528d58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "41c8edb26bd4806ccdf8bd25890abf0fad47fe57414e038f45c4d504e7528d58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41c8edb26bd4806ccdf8bd25890abf0fad47fe57414e038f45c4d504e7528d58", kill_on_drop: false }`
[INFO] [stdout] 41c8edb26bd4806ccdf8bd25890abf0fad47fe57414e038f45c4d504e7528d58
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 84d49aa8d8ee8d8b01cbc9b95b3f94ae83106527d9d51ea9c9d8cce6cd10880a
[INFO] running `Command { std: "docker" "start" "-a" "84d49aa8d8ee8d8b01cbc9b95b3f94ae83106527d9d51ea9c9d8cce6cd10880a", kill_on_drop: false }`
[INFO] [stderr]    Compiling atomic_refcell v0.1.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:126:30
[INFO] [stdout]     |
[INFO] [stdout] 126 |             Err(s) => panic!(s),
[INFO] [stdout]     |                              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 126 |             Err(s) => panic!("{}", s),
[INFO] [stdout]     |                              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:151:30
[INFO] [stdout]     |
[INFO] [stdout] 151 |             Err(s) => panic!(s),
[INFO] [stdout]     |                              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 151 |             Err(s) => panic!("{}", s),
[INFO] [stdout]     |                              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.87s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "84d49aa8d8ee8d8b01cbc9b95b3f94ae83106527d9d51ea9c9d8cce6cd10880a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84d49aa8d8ee8d8b01cbc9b95b3f94ae83106527d9d51ea9c9d8cce6cd10880a", kill_on_drop: false }`
[INFO] [stdout] 84d49aa8d8ee8d8b01cbc9b95b3f94ae83106527d9d51ea9c9d8cce6cd10880a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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" "+1.54.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fb3f8f59636c3498323d6be6996a6171c10d2929d4ad1948c3b5cc0d373b5fbf
[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" "fb3f8f59636c3498323d6be6996a6171c10d2929d4ad1948c3b5cc0d373b5fbf", kill_on_drop: false }`
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:126:30
[INFO] [stdout]     |
[INFO] [stdout] 126 |             Err(s) => panic!(s),
[INFO] [stdout]     |                              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 126 |             Err(s) => panic!("{}", s),
[INFO] [stdout]     |                              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:151:30
[INFO] [stdout]     |
[INFO] [stdout] 151 |             Err(s) => panic!(s),
[INFO] [stdout]     |                              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 151 |             Err(s) => panic!("{}", s),
[INFO] [stdout]     |                              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling atomic_refcell v0.1.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:126:30
[INFO] [stdout]     |
[INFO] [stdout] 126 |             Err(s) => panic!(s),
[INFO] [stdout]     |                              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 126 |             Err(s) => panic!("{}", s),
[INFO] [stdout]     |                              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:151:30
[INFO] [stdout]     |
[INFO] [stdout] 151 |             Err(s) => panic!(s),
[INFO] [stdout]     |                              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]     |
[INFO] [stdout] 151 |             Err(s) => panic!("{}", s),
[INFO] [stdout]     |                              ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "fb3f8f59636c3498323d6be6996a6171c10d2929d4ad1948c3b5cc0d373b5fbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb3f8f59636c3498323d6be6996a6171c10d2929d4ad1948c3b5cc0d373b5fbf", kill_on_drop: false }`
[INFO] [stdout] fb3f8f59636c3498323d6be6996a6171c10d2929d4ad1948c3b5cc0d373b5fbf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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" "+1.54.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] bb7d605124d424b758af968b55ff6ff92b2a1e1101ccb4bf1449696471151fac
[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" "bb7d605124d424b758af968b55ff6ff92b2a1e1101ccb4bf1449696471151fac", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stdout] running 0 tests
[INFO] [stderr]    --> src/lib.rs:126:30
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 126 |             Err(s) => panic!(s),
[INFO] [stdout] 
[INFO] [stderr]     |                              ^
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] running 15 tests
[INFO] [stderr]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout] test try_immutable ... ok
[INFO] [stderr]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout] test try_interleaved ... ok
[INFO] [stderr] help: add a "{}" format string to Display the message
[INFO] [stdout] test try_mutable ... ok
[INFO] [stderr]     |
[INFO] [stdout] test map_mut ... ok
[INFO] [stderr] 126 |             Err(s) => panic!("{}", s),
[INFO] [stdout] test map ... ok
[INFO] [stderr]     |                              ^^^^^
[INFO] [stdout] test interleaved ... ok
[INFO] [stderr] 
[INFO] [stdout] test immutable_then_try_mutable ... ok
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stdout] test immutable ... ok
[INFO] [stderr]    --> src/lib.rs:151:30
[INFO] [stdout] test mutable_then_try_immutable ... ok
[INFO] [stderr]     |
[INFO] [stdout] test mutable ... ok
[INFO] [stderr] 151 |             Err(s) => panic!(s),
[INFO] [stdout] test get_mut ... ok
[INFO] [stderr]     |                              ^
[INFO] [stdout] test mutable_then_try_mutable ... ok
[INFO] [stderr]     |
[INFO] [stderr]     = note: this is no longer accepted in Rust 2021
[INFO] [stderr] help: add a "{}" format string to Display the message
[INFO] [stderr]     |
[INFO] [stderr] 151 |             Err(s) => panic!("{}", s),
[INFO] [stderr]     |                              ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> src/lib.rs:126:30
[INFO] [stderr]     |
[INFO] [stderr] 126 |             Err(s) => panic!(s),
[INFO] [stderr]     |                              ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stderr]     = note: this is no longer accepted in Rust 2021
[INFO] [stderr] help: add a "{}" format string to Display the message
[INFO] [stderr]     |
[INFO] [stderr] 126 |             Err(s) => panic!("{}", s),
[INFO] [stderr]     |                              ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> src/lib.rs:151:30
[INFO] [stderr]     |
[INFO] [stderr] 151 |             Err(s) => panic!(s),
[INFO] [stderr]     |                              ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this is no longer accepted in Rust 2021
[INFO] [stderr] help: add a "{}" format string to Display the message
[INFO] [stderr]     |
[INFO] [stderr] 151 |             Err(s) => panic!("{}", s),
[INFO] [stderr]     |                              ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/atomic_refcell-08b4cb9a2f28c5a4)
[INFO] [stderr]      Running tests/basic.rs (/opt/rustwide/target/debug/deps/basic-2f598578edf2e0b3)
[INFO] [stdout] test double_mutable - should panic ... ok
[INFO] [stdout] test immutable_then_mutable - should panic ... ok
[INFO] [stdout] test mutable_then_immutable - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests atomic_refcell
[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" "bb7d605124d424b758af968b55ff6ff92b2a1e1101ccb4bf1449696471151fac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb7d605124d424b758af968b55ff6ff92b2a1e1101ccb4bf1449696471151fac", kill_on_drop: false }`
[INFO] [stdout] bb7d605124d424b758af968b55ff6ff92b2a1e1101ccb4bf1449696471151fac
